diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/CMakeLists.txt | 95 | ||||
| -rw-r--r-- | doc/ChangeLog | 28 | ||||
| -rw-r--r-- | doc/Makefile.am | 14 | ||||
| -rw-r--r-- | doc/Makefile.in | 14 | ||||
| -rw-r--r-- | doc/awkcard.in | 3 | ||||
| -rw-r--r-- | doc/gawk.1 | 27 | ||||
| -rw-r--r-- | doc/gawk.info | 1281 | ||||
| -rw-r--r-- | doc/gawk.texi | 101 | ||||
| -rw-r--r-- | doc/gawktexi.in | 101 |
9 files changed, 979 insertions, 685 deletions
diff --git a/doc/CMakeLists.txt b/doc/CMakeLists.txt new file mode 100644 index 00000000..e12f5de0 --- /dev/null +++ b/doc/CMakeLists.txt @@ -0,0 +1,95 @@ +# +# doc/CMakeLists.txt --- CMake input file for gawk +# +# Copyright (C) 2013 +# the Free Software Foundation, Inc. +# +# This file is part of GAWK, the GNU implementation of the +# AWK Programming Language. +# +# GAWK is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# GAWK is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA +# + +## process this file with CMake to produce Makefile + +MACRO(DocDependency outfile) + add_dependencies(doc ${outfile}) + add_custom_target( + ${outfile} + DEPENDS ${ARGN} + WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} + COMMAND ${CMAKE_SOURCE_DIR}/cmake/docmaker ${outfile} ${ARGN} + ) +ENDMACRO(DocDependency) + +find_program(TEXI2DVI_CONVERTER texi2dvi) +if (TEXI2DVI_CONVERTER) + add_custom_target(doc) + DocDependency(gawk.texi gawktexi.in rflashlight.eps api-figure1.fig api-figure2.fig api-figure3.fig general-program.fig process-flow.fig) + DocDependency(rflashlight.eps) + DocDependency(api-figure1.fig) + DocDependency(api-figure2.fig) + DocDependency(api-figure3.fig) + DocDependency(general-program.fig) + DocDependency(process-flow.fig) + DocDependency(gawk.dvi gawk.texi) + DocDependency(gawk.info gawk.texi) + DocDependency(gawkinet.dvi gawkinet.texi) + DocDependency(gawkinet.info gawkinet.texi) + DocDependency(gawkinet.texi statist.eps) + DocDependency(gawk.1.ps gawk.1) + DocDependency(igawk.1.ps igawk.1) + find_program(DVIPS_CONVERTER dvips) + if (DVIPS_CONVERTER) + DocDependency(gawk.ps gawk.dvi) + DocDependency(gawkinet.ps gawkinet.dvi) + find_program(PS2PDF_CONVERTER ps2pdf) + if (PS2PDF_CONVERTER) + DocDependency(gawk.1.pdf gawk.1.ps) + DocDependency(igawk.1.pdf igawk.1.ps) + DocDependency(gawk.pdf gawk.ps) + DocDependency(gawkinet.pdf gawkinet.ps) + install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/gawk.1.pdf DESTINATION doc) + install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/igawk.1.pdf DESTINATION doc) + install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/gawk.info DESTINATION doc) + install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/gawk.pdf DESTINATION doc) + install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/gawkinet.info DESTINATION doc) + install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/gawkinet.pdf DESTINATION doc) + + set(CARDSRC macros cardfonts colors awkcard.tr) + set(CARDSRC_N macros cardfonts no.colors awkcard.tr) + set(CARDFILES ${CARDSRC} ad.block awkcard.in setter.outline) + DocDependency(awkcard.tr awkcard.in) + DocDependency(awkcard.nc ${CARDFILES}) + DocDependency(awkcard.ps ${CARDFILES}) + DocDependency(awkcard.pdf awkcard.ps) + install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/awkcard.pdf DESTINATION doc) + + else() + message(WARNING "Found no ps2pdf tool; no doc will be generated") + install(CODE "MESSAGE(\"doc generated only in .ps files\")") + endif() + else() + message(WARNING "Found no dvips tool; no doc will be generated") + install(CODE "MESSAGE(\"doc generated only in .dvi files and man pages in .ps files\")") + endif() +else() + message(WARNING "Found no texi2dvi tool; no doc will be generated") + add_custom_command( + TARGET doc + COMMAND echo no doc generated because of missing texi2dvi + ) +endif() + diff --git a/doc/ChangeLog b/doc/ChangeLog index 4ae87a19..724dd31f 100644 --- a/doc/ChangeLog +++ b/doc/ChangeLog @@ -15,6 +15,10 @@ * gawktexi.in: Starting on reviewer comments. Update acknowledgements. +2014-08-12 Arnold D. Robbins <arnold@skeeve.com> + + * gawktexi.in: Cause div.awk to get into the example files. + 2014-08-06 Arnold D. Robbins <arnold@skeeve.com> * gawktexi.in: Misc minor additions. @@ -29,6 +33,18 @@ * gawktexi.in: Fix doc for API get_record - errcode needs to be greater than zero. +2014-07-24 Arnold D. Robbins <arnold@skeeve.com> + + * gawktexi.in (Numeric Functions): For `div()', clarify + truncation is towards zero. Thanks to Michal Jaegermann + for pointing out the need to clarify this. + +2014-07-10 Arnold D. Robbins <arnold@skeeve.com> + + * gawktexi.in (Numeric Functions): Document new `div()' function. + (Arbitrary Precision Integers): Document raison d'etre for div(). + * gawk.1, awkcard.in: Document `div()'. + 2014-07-04 Arnold D. Robbins <arnold@skeeve.com> * gawktexi.in (Bracket Expressions): Add a note about how to @@ -39,6 +55,11 @@ * gawktexi.in: Update permissions on copyright page per latest maintain.texi. Add GPL to print version of book. +2014-06-24 Arnold D. Robbins <arnold@skeeve.com> + + * gawktexi.in: Document that --pretty-print no longer runs the + program. Remove mention of GAWK_NO_PP_RUN env var. + 2014-06-22 Arnold D. Robbins <arnold@skeeve.com> * gawktexi.in: Typo fixes and minor corrections. @@ -335,7 +356,7 @@ 2013-12-26 Arnold D. Robbins <arnold@skeeve.com> * gawktexi.in: More minor additions / fixes. - (Bugs): Add John Malmberg for VMS. + (Bugs): Add John Malmberg for VMS. Other minor edits. 2013-12-25 Arnold D. Robbins <arnold@skeeve.com> @@ -409,6 +430,11 @@ * gawktexi.in (FN, FFN, DF,DDF, PVERSION, CTL): Remove macros. They have no alternate versions and are just in the way. +2013-08-15 Arnold D. Robbins <arnold@skeeve.com> + + * gawk.1: Document that ENVIRON updates affect the environment. + * gawktexi.in: Ditto. + 2013-06-27 Arnold D. Robbins <arnold@skeeve.com> * texinfo.tex: Update from Karl, fixes a formating problem. diff --git a/doc/Makefile.am b/doc/Makefile.am index 86321bbc..8a0442a7 100644 --- a/doc/Makefile.am +++ b/doc/Makefile.am @@ -26,7 +26,7 @@ info_TEXINFOS = gawk.texi gawkinet.texi -man_MANS = gawk.1 igawk.1 +man_MANS = gawk.1 EXTRA_DIST = ChangeLog ChangeLog.0 README.card ad.block setter.outline \ awkcard.in awkforai.txt texinfo.tex cardfonts \ @@ -50,7 +50,7 @@ EXTRA_DIST = ChangeLog ChangeLog.0 README.card ad.block setter.outline \ bc_notes # Get rid of generated files when cleaning -CLEANFILES = *.ps *.html *.dvi *~ awkcard.nc awkcard.tr gawk.pdf gawkinet.pdf awkcard.pdf gawk.1.pdf igawk.1.pdf +CLEANFILES = *.ps *.html *.dvi *~ awkcard.nc awkcard.tr gawk.pdf gawkinet.pdf awkcard.pdf gawk.1.pdf MAKEINFO = @MAKEINFO@ --no-split --force @@ -75,9 +75,9 @@ AWKCARD = awkcard.ps gawk.texi: $(srcdir)/gawktexi.in $(srcdir)/sidebar.awk awk -f $(srcdir)/sidebar.awk < $(srcdir)/gawktexi.in > gawk.texi -postscript: gawk.ps gawkinet.ps gawk.1.ps igawk.1.ps $(AWKCARD) +postscript: gawk.ps gawkinet.ps gawk.1.ps $(AWKCARD) -pdf: postscript gawk.pdf gawkinet.pdf awkcard.pdf gawk.1.pdf igawk.1.pdf +pdf: postscript gawk.pdf gawkinet.pdf awkcard.pdf gawk.1.pdf gawk.ps: gawk.dvi TEXINPUTS=$(srcdir): dvips -o gawk.ps gawk.dvi @@ -91,12 +91,6 @@ gawk.1.ps: gawk.1 gawk.1.pdf: gawk.1.ps ps2pdf gawk.1.ps gawk.1.pdf -igawk.1.ps: igawk.1 - -groff -man $(srcdir)/igawk.1 > igawk.1.ps - -igawk.1.pdf: igawk.1.ps - ps2pdf igawk.1.ps igawk.1.pdf - awkcard.tr: awkcard.in sed 's:SRCDIR:$(srcdir):' < $(srcdir)/awkcard.in > awkcard.tr diff --git a/doc/Makefile.in b/doc/Makefile.in index abaf5601..d89beffd 100644 --- a/doc/Makefile.in +++ b/doc/Makefile.in @@ -341,7 +341,7 @@ top_build_prefix = @top_build_prefix@ top_builddir = @top_builddir@ top_srcdir = @top_srcdir@ info_TEXINFOS = gawk.texi gawkinet.texi -man_MANS = gawk.1 igawk.1 +man_MANS = gawk.1 EXTRA_DIST = ChangeLog ChangeLog.0 README.card ad.block setter.outline \ awkcard.in awkforai.txt texinfo.tex cardfonts \ api-figure1.eps api-figure1.fig api-figure1.pdf \ @@ -365,7 +365,7 @@ EXTRA_DIST = ChangeLog ChangeLog.0 README.card ad.block setter.outline \ # Get rid of generated files when cleaning -CLEANFILES = *.ps *.html *.dvi *~ awkcard.nc awkcard.tr gawk.pdf gawkinet.pdf awkcard.pdf gawk.1.pdf igawk.1.pdf +CLEANFILES = *.ps *.html *.dvi *~ awkcard.nc awkcard.tr gawk.pdf gawkinet.pdf awkcard.pdf gawk.1.pdf TROFF = groff -t -Tps -U SEDME = sed -e "s/^level0 restore/level0 restore flashme 100 72 moveto (Copyright `date '+%m-%d-%y %T'`, FSF, Inc. (all)) show/" \ -e "s/^\/level0 save def/\/level0 save def 30 -48 translate/" @@ -869,9 +869,9 @@ uninstall-man: uninstall-man1 gawk.texi: $(srcdir)/gawktexi.in $(srcdir)/sidebar.awk awk -f $(srcdir)/sidebar.awk < $(srcdir)/gawktexi.in > gawk.texi -postscript: gawk.ps gawkinet.ps gawk.1.ps igawk.1.ps $(AWKCARD) +postscript: gawk.ps gawkinet.ps gawk.1.ps $(AWKCARD) -pdf: postscript gawk.pdf gawkinet.pdf awkcard.pdf gawk.1.pdf igawk.1.pdf +pdf: postscript gawk.pdf gawkinet.pdf awkcard.pdf gawk.1.pdf gawk.ps: gawk.dvi TEXINPUTS=$(srcdir): dvips -o gawk.ps gawk.dvi @@ -885,12 +885,6 @@ gawk.1.ps: gawk.1 gawk.1.pdf: gawk.1.ps ps2pdf gawk.1.ps gawk.1.pdf -igawk.1.ps: igawk.1 - -groff -man $(srcdir)/igawk.1 > igawk.1.ps - -igawk.1.pdf: igawk.1.ps - ps2pdf igawk.1.ps igawk.1.pdf - awkcard.tr: awkcard.in sed 's:SRCDIR:$(srcdir):' < $(srcdir)/awkcard.in > awkcard.tr diff --git a/doc/awkcard.in b/doc/awkcard.in index ca28f0a7..556bdc1e 100644 --- a/doc/awkcard.in +++ b/doc/awkcard.in @@ -1609,6 +1609,9 @@ expand; l lw(2i). \*(CD\*(FCatan2(\*(FIy\*(FC, \*(FIx\*(FC)\*(FR The arctangent of \*(FIy/x\fP in radians. \*(FCcos(\*(FIexpr\*(FC)\*(FR The cosine of \*(FIexpr\fP, which is in radians. +\*(CB\*(FCdiv(\*(FIn\*(FR\*(FC,\*(FI d\*(FR\*(FC,\*(FI res\*(FR\*(FC)\*(FR T{ +Return the result of integer division in \*(FIres\*(FR.\*(CD +T} \*(FCexp(\*(FIexpr\*(FC)\*(FR The exponential function (\*(FIe \*(FC^ \*(FIx\*(FR). \*(FCint(\*(FIexpr\*(FC)\*(FR Truncate to integer. \*(FClog(\*(FIexpr\*(FC)\*(FR The natural logarithm function (base \*(FIe\^\*(FR). @@ -13,7 +13,7 @@ . if \w'\(rq' .ds rq "\(rq . \} .\} -.TH GAWK 1 "Apr 17 2014" "Free Software Foundation" "Utility Commands" +.TH GAWK 1 "Jul 10 2014" "Free Software Foundation" "Utility Commands" .SH NAME gawk \- pattern scanning and processing language .SH SYNOPSIS @@ -917,11 +917,17 @@ An array containing the values of the current environment. The array is indexed by the environment variables, each element being the value of that variable (e.g., \fBENVIRON["HOME"]\fP might be \fB"/home/arnold"\fR). -Changing this array does not affect the environment seen by programs which +.sp +In POSIX mode, +changing this array does not affect the environment seen by programs which .I gawk spawns via redirection or the .B system() function. +Otherwise, +.I gawk +updates its real environment so that programs it spawns see +the changes. .TP .B ERRNO If a system error occurs either doing a redirection for @@ -2623,6 +2629,23 @@ Return the cosine of .IR expr , which is in radians. .TP +.BI div( num ", " denom ", " result ) +Truncate +.I num +and +.I denom +to integers. Return the quotient of +.I num +divided by +.I denom +in \fIresult\fB["quotient"]\fR +and the remainder in +in \fIresult\fB["remainder"]\fR. +This is a +.I gawk +extension, primarily of value when working with +arbitrarily large integers. +.TP .BI exp( expr ) The exponential function. .TP diff --git a/doc/gawk.info b/doc/gawk.info index 7c97a5c9..a3195bb5 100644 --- a/doc/gawk.info +++ b/doc/gawk.info @@ -2564,10 +2564,8 @@ The following list describes options mandated by the POSIX standard: different file name for the output. No space is allowed between the `-o' and FILE, if FILE is supplied. - NOTE: Due to the way `gawk' has evolved, with this option - your program is still executed. This will change in the next - major release such that `gawk' will only pretty-print the - program and not run it. + NOTE: In the past, this option would also execute your + program. This is no longer the case. `-O' `--optimize' @@ -2949,11 +2947,6 @@ change. The variables are: supposed to be differences, but occasionally theory and practice don't coordinate with each other.) -`GAWK_NO_PP_RUN' - If this variable exists, then when invoked with the - `--pretty-print' option, `gawk' skips running the program. This - variable will not survive into the next major release. - `GAWK_STACKSIZE' This specifies the amount by which `gawk' should grow its internal evaluation stack, when needed. @@ -10175,10 +10168,18 @@ Options::), they are not special. An associative array containing the values of the environment. The array indices are the environment variable names; the elements are the values of the particular environment variables. For - example, `ENVIRON["HOME"]' might be `"/home/arnold"'. Changing - this array does not affect the environment passed on to any - programs that `awk' may spawn via redirection or the `system()' - function. (In a future version of `gawk', it may do so.) + example, `ENVIRON["HOME"]' might be `/home/arnold'. + + For POSIX `awk', changing this array does not affect the + environment passed on to any programs that `awk' may spawn via + redirection or the `system()' function. + + However, beginning with version 4.2, if not in POSIX compatibility + mode, `gawk' does update its own environment when `ENVIRON' is + changed, thus changing the environment seen by programs that it + creates. You should therefore be especially careful if you modify + `ENVIRON["PATH"]"', which is the search path for finding + executable programs. Some operating systems may not have environment variables. On such systems, the `ENVIRON' array is empty (except for @@ -11696,6 +11697,21 @@ brackets ([ ]): `cos(X)' Return the cosine of X, with X in radians. +`div(NUMERATOR, DENOMINATOR, RESULT)' + Perform integer division, similar to the standard C function of the + same name. First, truncate `numerator' and `denominator' towards + zero, creating integer values. Clear the `result' array, and then + set `result["quotient"]' to the result of `numerator / + denominator', truncated towards zero to an integer, and set + `result["remainder"]' to the result of `numerator % denominator', + truncated towards zero to an integer. This function is primarily + intended for use with arbitrary length integers; it avoids + creating MPFR arbitrary precision floating-point values (*note + Arbitrary Precision Integers::). + + This function is a `gawk' extension. It is not available in + compatibility mode (*note Options::). + `exp(X)' Return the exponential of X (`e ^ X') or report an error if X is out of range. The range of values X can have depends on your @@ -19622,8 +19638,8 @@ by the `Ctrl-<\>' key. called this way, `gawk' "pretty prints" the program into `awkprof.out', without any execution counts. - NOTE: The `--pretty-print' option still runs your program. This - will change in the next major release. + NOTE: Once upon a time, the `--pretty-print' option would also run + your program. This is is no longer the case. File: gawk.info, Node: Advanced Features Summary, Prev: Profiling, Up: Advanced Features @@ -22085,6 +22101,29 @@ just use the following: gawk -M 'BEGIN { n = 13; print n % 2 }' + When dividing two arbitrary precision integers with either `/' or +`%', the result is typically an arbitrary precision floating point +value (unless the denominator evenly divides into the numerator). In +order to do integer division or remainder with arbitrary precision +integers, use the built-in `div()' function (*note Numeric Functions::). + + You can simulate the `div()' function in standard `awk' using this +user-defined function: + + # div --- do integer division + + function div(numerator, denominator, result, i) + { + split("", result) + + numerator = int(numerator) + denominator = int(denominator) + result["quotient"] = int(numerator / denominator) + result["remainder"] = int(numerator % denominator) + + return 0.0 + } + ---------- Footnotes ---------- (1) Weisstein, Eric W. `Sylvester's Sequence'. From MathWorld--A @@ -27014,7 +27053,9 @@ Various `.c', `.y', and `.h' files `doc/igawk.1' The `troff' source for a manual page describing the `igawk' - program presented in *note Igawk Program::. + program presented in *note Igawk Program::. (Since `gawk' can do + its own `@include' processing, neither `igawk' nor `igawk.1' are + installed.) `doc/Makefile.in' The input file used during the configuration process to generate @@ -27056,11 +27097,10 @@ Various `.c', `.y', and `.h' files contains a `Makefile.in' file, which `configure' uses to generate a `Makefile'. `Makefile.am' is used by GNU Automake to create `Makefile.in'. The library functions from *note Library - Functions::, and the `igawk' program from *note Igawk Program::, - are included as ready-to-use files in the `gawk' distribution. - They are installed as part of the installation process. The rest - of the programs in this Info file are available in appropriate - subdirectories of `awklib/eg'. + Functions::, are included as ready-to-use files in the `gawk' + distribution. They are installed as part of the installation + process. The rest of the programs in this Info file are available + in appropriate subdirectories of `awklib/eg'. `extension/*' The source code, manual pages, and infrastructure files for the @@ -30993,20 +31033,20 @@ Index * --include option: Options. (line 159) * --lint option <1>: Options. (line 185) * --lint option: Command Line. (line 20) -* --lint-old option: Options. (line 295) +* --lint-old option: Options. (line 293) * --load option: Options. (line 173) * --non-decimal-data option <1>: Nondecimal Data. (line 6) * --non-decimal-data option: Options. (line 211) * --non-decimal-data option, strtonum() function and: Nondecimal Data. (line 36) -* --optimize option: Options. (line 237) -* --posix option: Options. (line 254) -* --posix option, --traditional option and: Options. (line 273) +* --optimize option: Options. (line 235) +* --posix option: Options. (line 252) +* --posix option, --traditional option and: Options. (line 271) * --pretty-print option: Options. (line 224) * --profile option <1>: Profiling. (line 12) -* --profile option: Options. (line 242) -* --re-interval option: Options. (line 279) -* --sandbox option: Options. (line 286) +* --profile option: Options. (line 240) +* --re-interval option: Options. (line 277) +* --sandbox option: Options. (line 284) * --sandbox option, disabling system() function: I/O Functions. (line 97) * --sandbox option, input redirection with getline: Getline. (line 19) @@ -31014,9 +31054,9 @@ Index (line 6) * --source option: Options. (line 117) * --traditional option: Options. (line 81) -* --traditional option, --posix option and: Options. (line 273) +* --traditional option, --posix option and: Options. (line 271) * --use-lc-numeric option: Options. (line 219) -* --version option: Options. (line 300) +* --version option: Options. (line 298) * --with-whiny-user-strftime configuration option: Additional Configuration Options. (line 35) * -b option: Options. (line 68) @@ -31024,32 +31064,32 @@ Index * -c option: Options. (line 81) * -D option: Options. (line 108) * -d option: Options. (line 93) -* -e option: Options. (line 335) +* -e option: Options. (line 333) * -E option: Options. (line 125) * -e option: Options. (line 117) * -f option: Options. (line 25) * -F option: Options. (line 21) * -f option: Long. (line 12) -* -F option, -Ft sets FS to TAB: Options. (line 308) +* -F option, -Ft sets FS to TAB: Options. (line 306) * -F option, command-line: Command Line Field Separator. (line 6) -* -f option, multiple uses: Options. (line 313) +* -f option, multiple uses: Options. (line 311) * -g option: Options. (line 147) * -h option: Options. (line 154) * -i option: Options. (line 159) -* -L option: Options. (line 295) +* -L option: Options. (line 293) * -l option: Options. (line 173) * -M option: Options. (line 205) * -N option: Options. (line 219) * -n option: Options. (line 211) -* -O option: Options. (line 237) +* -O option: Options. (line 235) * -o option: Options. (line 224) -* -P option: Options. (line 254) -* -p option: Options. (line 242) -* -r option: Options. (line 279) -* -S option: Options. (line 286) +* -P option: Options. (line 252) +* -p option: Options. (line 240) +* -r option: Options. (line 277) +* -S option: Options. (line 284) * -v option: Assignment Options. (line 12) -* -V option: Options. (line 300) +* -V option: Options. (line 298) * -v option: Options. (line 32) * -W option: Options. (line 46) * . (period), regexp operator: Regexp Operators. (line 44) @@ -31321,7 +31361,7 @@ Index * awf (amazingly workable formatter) program: Glossary. (line 24) * awk debugging, enabling: Options. (line 108) * awk language, POSIX version: Assignment Ops. (line 137) -* awk profiling, enabling: Options. (line 242) +* awk profiling, enabling: Options. (line 240) * awk programs <1>: Two Rules. (line 6) * awk programs <2>: Executable Scripts. (line 6) * awk programs: Getting Started. (line 12) @@ -31727,7 +31767,7 @@ Index * cosine: Numeric Functions. (line 15) * counting: Wc Program. (line 6) * csh utility: Statements/Lines. (line 44) -* csh utility, POSIXLY_CORRECT environment variable: Options. (line 353) +* csh utility, POSIXLY_CORRECT environment variable: Options. (line 351) * csh utility, |& operator, comparison with: Two-way I/O. (line 25) * ctime() user-defined function: Function Example. (line 74) * currency symbols, localization: Explaining gettext. (line 104) @@ -31762,9 +31802,9 @@ Index * dark corner, exit statement: Exit Statement. (line 30) * dark corner, field separators: Field Splitting Summary. (line 46) -* dark corner, FILENAME variable <1>: Auto-set. (line 90) +* dark corner, FILENAME variable <1>: Auto-set. (line 98) * dark corner, FILENAME variable: Getline Notes. (line 19) -* dark corner, FNR/NR variables: Auto-set. (line 301) +* dark corner, FNR/NR variables: Auto-set. (line 309) * dark corner, format-control characters: Control Letters. (line 18) * dark corner, FS as null string: Single Character Fields. (line 20) @@ -31910,7 +31950,7 @@ Index * debugger, read commands from a file: Debugger Info. (line 96) * debugging awk programs: Debugger. (line 6) * debugging gawk, bug reports: Bugs. (line 9) -* decimal point character, locale specific: Options. (line 270) +* decimal point character, locale specific: Options. (line 268) * decrement operators: Increment Ops. (line 35) * default keyword: Switch Statement. (line 6) * Deifik, Scott <1>: Bugs. (line 71) @@ -31949,12 +31989,12 @@ Index (line 81) * differences in awk and gawk, command-line directories: Command-line directories. (line 6) -* differences in awk and gawk, ERRNO variable: Auto-set. (line 74) +* differences in awk and gawk, ERRNO variable: Auto-set. (line 82) * differences in awk and gawk, error messages: Special FD. (line 16) * differences in awk and gawk, FIELDWIDTHS variable: User-modified. (line 37) * differences in awk and gawk, FPAT variable: User-modified. (line 43) -* differences in awk and gawk, FUNCTAB variable: Auto-set. (line 115) +* differences in awk and gawk, FUNCTAB variable: Auto-set. (line 123) * differences in awk and gawk, function arguments (gawk): Calling Built-in. (line 16) * differences in awk and gawk, getline command: Getline. (line 19) @@ -31977,7 +32017,7 @@ Index (line 260) * differences in awk and gawk, print/printf statements: Format Modifiers. (line 13) -* differences in awk and gawk, PROCINFO array: Auto-set. (line 128) +* differences in awk and gawk, PROCINFO array: Auto-set. (line 136) * differences in awk and gawk, read timeouts: Read Timeout. (line 6) * differences in awk and gawk, record separators: awk split records. (line 124) @@ -31987,7 +32027,7 @@ Index (line 26) * differences in awk and gawk, RS/RT variables: gawk split records. (line 58) -* differences in awk and gawk, RT variable: Auto-set. (line 257) +* differences in awk and gawk, RT variable: Auto-set. (line 265) * differences in awk and gawk, single-character fields: Single Character Fields. (line 6) * differences in awk and gawk, split() function: String Functions. @@ -31995,7 +32035,7 @@ Index * differences in awk and gawk, strings: Scalar Constants. (line 20) * differences in awk and gawk, strings, storing: gawk split records. (line 77) -* differences in awk and gawk, SYMTAB variable: Auto-set. (line 261) +* differences in awk and gawk, SYMTAB variable: Auto-set. (line 269) * differences in awk and gawk, TEXTDOMAIN variable: User-modified. (line 152) * differences in awk and gawk, trunc-mod operation: Arithmetic Ops. @@ -32011,6 +32051,7 @@ Index * display debugger command: Viewing And Changing Data. (line 8) * display debugger options: Debugger Info. (line 57) +* div: Numeric Functions. (line 18) * division: Arithmetic Ops. (line 44) * do-while statement: Do Statement. (line 6) * do-while statement, use of regexps in: Regexp Usage. (line 19) @@ -32035,8 +32076,8 @@ Index * dynamically loaded extensions: Dynamic Extensions. (line 6) * e debugger command (alias for enable): Breakpoint Control. (line 73) * EBCDIC: Ordinal Functions. (line 45) -* effective group ID of gawk user: Auto-set. (line 133) -* effective user ID of gawk user: Auto-set. (line 137) +* effective group ID of gawk user: Auto-set. (line 141) +* effective user ID of gawk user: Auto-set. (line 145) * egrep utility <1>: Egrep Program. (line 6) * egrep utility: Bracket Expressions. (line 24) * egrep.awk program: Egrep Program. (line 54) @@ -32092,13 +32133,13 @@ Index (line 11) * EREs (Extended Regular Expressions): Bracket Expressions. (line 24) * ERRNO variable <1>: TCP/IP Networking. (line 54) -* ERRNO variable: Auto-set. (line 74) +* ERRNO variable: Auto-set. (line 82) * ERRNO variable, with BEGINFILE pattern: BEGINFILE/ENDFILE. (line 26) * ERRNO variable, with close() function: Close Files And Pipes. (line 139) * ERRNO variable, with getline command: Getline. (line 19) * error handling: Special FD. (line 16) -* error handling, ERRNO variable and: Auto-set. (line 74) +* error handling, ERRNO variable and: Auto-set. (line 82) * error output: Special FD. (line 6) * escape processing, gsub()/gensub()/sub() functions: Gory Details. (line 6) @@ -32131,10 +32172,10 @@ Index * exit status, of VMS: VMS Running. (line 29) * exit the debugger: Miscellaneous Debugger Commands. (line 99) -* exp: Numeric Functions. (line 18) +* exp: Numeric Functions. (line 33) * expand utility: Very Simple. (line 69) * Expat XML parser library: gawkextlib. (line 35) -* exponent: Numeric Functions. (line 18) +* exponent: Numeric Functions. (line 33) * expressions: Expressions. (line 6) * expressions, as patterns: Expression Patterns. (line 6) * expressions, assignment: Assignment Ops. (line 6) @@ -32152,7 +32193,7 @@ Index (line 6) * extension API version: Extension Versioning. (line 6) -* extension API, version number: Auto-set. (line 224) +* extension API, version number: Auto-set. (line 232) * extension example: Extension Example. (line 6) * extension registration: Registration Functions. (line 6) @@ -32231,7 +32272,7 @@ Index * file names, distinguishing: Auto-set. (line 56) * file names, in compatibility mode: Special Caveats. (line 9) * file names, standard streams in gawk: Special FD. (line 46) -* FILENAME variable <1>: Auto-set. (line 90) +* FILENAME variable <1>: Auto-set. (line 98) * FILENAME variable: Reading Files. (line 6) * FILENAME variable, getline, setting with: Getline Notes. (line 19) * filenames, assignments as: Ignoring Assigns. (line 6) @@ -32299,9 +32340,9 @@ Index * flush buffered output: I/O Functions. (line 28) * fnmatch() extension function: Extension Sample Fnmatch. (line 12) -* FNR variable <1>: Auto-set. (line 99) +* FNR variable <1>: Auto-set. (line 107) * FNR variable: Records. (line 6) -* FNR variable, changing: Auto-set. (line 301) +* FNR variable, changing: Auto-set. (line 309) * for statement: For Statement. (line 6) * for statement, looping over arrays: Scanning an Array. (line 20) * fork() extension function: Extension Sample Fork. @@ -32338,7 +32379,7 @@ Index * FS variable, --field-separator option and: Options. (line 21) * FS variable, as null string: Single Character Fields. (line 20) -* FS variable, as TAB character: Options. (line 266) +* FS variable, as TAB character: Options. (line 264) * FS variable, changing value of: Field Separators. (line 35) * FS variable, running awk programs and: Cut Program. (line 68) * FS variable, setting from command line: Command Line Field Separator. @@ -32351,7 +32392,7 @@ Index * FSF (Free Software Foundation): Manual History. (line 6) * fts() extension function: Extension Sample File Functions. (line 61) -* FUNCTAB array: Auto-set. (line 115) +* FUNCTAB array: Auto-set. (line 123) * function calls: Function Calls. (line 6) * function calls, indirect: Indirect Calls. (line 6) * function definition example: Function Example. (line 6) @@ -32401,7 +32442,7 @@ Index * G-d: Acknowledgments. (line 92) * Garfinkle, Scott: Contributors. (line 34) * gawk program, dynamic profiling: Profiling. (line 179) -* gawk version: Auto-set. (line 199) +* gawk version: Auto-set. (line 207) * gawk, ARGIND variable in: Other Arguments. (line 12) * gawk, awk and <1>: This Manual. (line 14) * gawk, awk and: Preface. (line 21) @@ -32422,13 +32463,13 @@ Index * gawk, distribution: Distribution contents. (line 6) * gawk, ERRNO variable in <1>: TCP/IP Networking. (line 54) -* gawk, ERRNO variable in <2>: Auto-set. (line 74) +* gawk, ERRNO variable in <2>: Auto-set. (line 82) * gawk, ERRNO variable in <3>: BEGINFILE/ENDFILE. (line 26) * gawk, ERRNO variable in <4>: Close Files And Pipes. (line 139) * gawk, ERRNO variable in: Getline. (line 19) * gawk, escape sequences: Escape Sequences. (line 128) -* gawk, extensions, disabling: Options. (line 254) +* gawk, extensions, disabling: Options. (line 252) * gawk, features, adding: Adding Code. (line 6) * gawk, features, advanced: Advanced Features. (line 6) * gawk, field separators and: User-modified. (line 71) @@ -32439,7 +32480,7 @@ Index * gawk, FPAT variable in <1>: User-modified. (line 43) * gawk, FPAT variable in: Splitting By Content. (line 27) -* gawk, FUNCTAB array in: Auto-set. (line 115) +* gawk, FUNCTAB array in: Auto-set. (line 123) * gawk, function arguments and: Calling Built-in. (line 16) * gawk, hexadecimal numbers and: Nondecimal-numbers. (line 42) * gawk, IGNORECASE variable in <1>: Array Sorting Functions. @@ -32470,7 +32511,7 @@ Index * gawk, OS/2 version of: PC Using. (line 16) * gawk, PROCINFO array in <1>: Two-way I/O. (line 99) * gawk, PROCINFO array in <2>: Time Functions. (line 47) -* gawk, PROCINFO array in: Auto-set. (line 128) +* gawk, PROCINFO array in: Auto-set. (line 136) * gawk, regexp constants and: Using Constant Regexps. (line 28) * gawk, regular expressions, case sensitivity: Case-sensitivity. @@ -32478,18 +32519,18 @@ Index * gawk, regular expressions, operators: GNU Regexp Operators. (line 6) * gawk, regular expressions, precedence: Regexp Operators. (line 162) -* gawk, RT variable in <1>: Auto-set. (line 257) +* gawk, RT variable in <1>: Auto-set. (line 265) * gawk, RT variable in <2>: Multiple Line. (line 129) * gawk, RT variable in: awk split records. (line 124) * gawk, See Also awk: Preface. (line 34) * gawk, source code, obtaining: Getting. (line 6) * gawk, splitting fields and: Constant Size. (line 88) * gawk, string-translation functions: I18N Functions. (line 6) -* gawk, SYMTAB array in: Auto-set. (line 261) +* gawk, SYMTAB array in: Auto-set. (line 269) * gawk, TEXTDOMAIN variable in: User-modified. (line 152) * gawk, timestamps: Time Functions. (line 6) * gawk, uses for: Preface. (line 34) -* gawk, versions of, information about, printing: Options. (line 300) +* gawk, versions of, information about, printing: Options. (line 298) * gawk, VMS version of: VMS Installation. (line 6) * gawk, word-boundary operator: GNU Regexp Operators. (line 63) @@ -32571,7 +32612,7 @@ Index * Grigera, Juan: Contributors. (line 57) * group database, reading: Group Functions. (line 6) * group file: Group Functions. (line 6) -* group ID of gawk user: Auto-set. (line 172) +* group ID of gawk user: Auto-set. (line 180) * groups, information about: Group Functions. (line 6) * gsub <1>: String Functions. (line 139) * gsub: Using Constant Regexps. @@ -32670,7 +32711,7 @@ Index * installation, VMS: VMS Installation. (line 6) * installing gawk: Installation. (line 6) * instruction tracing, in debugger: Debugger Info. (line 89) -* int: Numeric Functions. (line 23) +* int: Numeric Functions. (line 38) * INT signal (MS-Windows): Profiling. (line 214) * integer array indices: Numeric Array Subscripts. (line 31) @@ -32800,7 +32841,7 @@ Index * lint checking, empty programs: Command Line. (line 16) * lint checking, issuing warnings: Options. (line 185) * lint checking, POSIXLY_CORRECT environment variable: Options. - (line 338) + (line 336) * lint checking, undefined functions: Pass By Value/Reference. (line 88) * LINT variable: User-modified. (line 88) @@ -32814,14 +32855,14 @@ Index * loading, extensions: Options. (line 173) * local variables, in a function: Variable Scope. (line 6) * locale categories: Explaining gettext. (line 81) -* locale decimal point character: Options. (line 270) +* locale decimal point character: Options. (line 268) * locale, definition of: Locales. (line 6) * localization: I18N and L10N. (line 6) * localization, See internationalization, localization: I18N and L10N. (line 6) -* log: Numeric Functions. (line 30) +* log: Numeric Functions. (line 45) * log files, timestamps in: Time Functions. (line 6) -* logarithm: Numeric Functions. (line 30) +* logarithm: Numeric Functions. (line 45) * logical false/true: Truth Values. (line 6) * logical operators, See Boolean expressions: Boolean Ops. (line 6) * login information: Passwd Functions. (line 16) @@ -32862,7 +32903,7 @@ Index * mawk utility <3>: Concatenation. (line 36) * mawk utility <4>: Getline/Pipe. (line 62) * mawk utility: Escape Sequences. (line 128) -* maximum precision supported by MPFR library: Auto-set. (line 213) +* maximum precision supported by MPFR library: Auto-set. (line 221) * McIlroy, Doug: Glossary. (line 149) * McPhee, Patrick: Contributors. (line 100) * message object files: Explaining gettext. (line 42) @@ -32875,7 +32916,7 @@ Index * messages from extensions: Printing Messages. (line 6) * metacharacters in regular expressions: Regexp Operators. (line 6) * metacharacters, escape sequences for: Escape Sequences. (line 134) -* minimum precision supported by MPFR library: Auto-set. (line 216) +* minimum precision supported by MPFR library: Auto-set. (line 224) * mktime: Time Functions. (line 25) * modifiers, in format specifiers: Format Modifiers. (line 6) * monetary information, localization: Explaining gettext. (line 104) @@ -32898,7 +32939,7 @@ Index * networks, programming: TCP/IP Networking. (line 6) * networks, support for: Special Network. (line 6) * newlines <1>: Boolean Ops. (line 67) -* newlines <2>: Options. (line 260) +* newlines <2>: Options. (line 258) * newlines: Statements/Lines. (line 6) * newlines, as field separators: Default Field Splitting. (line 6) @@ -32927,7 +32968,7 @@ Index (line 47) * nexti debugger command: Debugger Execution Control. (line 49) -* NF variable <1>: Auto-set. (line 104) +* NF variable <1>: Auto-set. (line 112) * NF variable: Fields. (line 33) * NF variable, decrementing: Changing Fields. (line 107) * ni debugger command (alias for nexti): Debugger Execution Control. @@ -32936,9 +32977,9 @@ Index * non-existent array elements: Reference to Elements. (line 23) * not Boolean-logic operator: Boolean Ops. (line 6) -* NR variable <1>: Auto-set. (line 123) +* NR variable <1>: Auto-set. (line 131) * NR variable: Records. (line 6) -* NR variable, changing: Auto-set. (line 301) +* NR variable, changing: Auto-set. (line 309) * null strings <1>: Basic Data Typing. (line 26) * null strings <2>: Truth Values. (line 6) * null strings <3>: Regexp Field Splitting. @@ -33053,7 +33094,7 @@ Index * p debugger command (alias for print): Viewing And Changing Data. (line 36) * Papadopoulos, Panos: Contributors. (line 128) -* parent process ID of gawk process: Auto-set. (line 181) +* parent process ID of gawk process: Auto-set. (line 189) * parentheses (), in a profile: Profiling. (line 146) * parentheses (), regexp operator: Regexp Operators. (line 80) * password file: Passwd Functions. (line 16) @@ -33120,7 +33161,7 @@ Index * portability, NF variable, decrementing: Changing Fields. (line 115) * portability, operators: Increment Ops. (line 60) * portability, operators, not in POSIX awk: Precedence. (line 98) -* portability, POSIXLY_CORRECT environment variable: Options. (line 358) +* portability, POSIXLY_CORRECT environment variable: Options. (line 356) * portability, substr() function: String Functions. (line 510) * portable object files <1>: Translator i18n. (line 6) * portable object files: Explaining gettext. (line 37) @@ -33169,11 +33210,11 @@ Index * POSIX awk, regular expressions and: Regexp Operators. (line 162) * POSIX awk, timestamps and: Time Functions. (line 6) * POSIX awk, | I/O operator and: Getline/Pipe. (line 55) -* POSIX mode: Options. (line 254) +* POSIX mode: Options. (line 252) * POSIX, awk and: Preface. (line 21) * POSIX, gawk extensions not included in: POSIX/GNU. (line 6) * POSIX, programs, implementing in awk: Clones. (line 6) -* POSIXLY_CORRECT environment variable: Options. (line 338) +* POSIXLY_CORRECT environment variable: Options. (line 336) * PREC variable: User-modified. (line 124) * precedence <1>: Precedence. (line 6) * precedence: Increment Ops. (line 60) @@ -33216,24 +33257,24 @@ Index * printing, unduplicated lines of text: Uniq Program. (line 6) * printing, user information: Id Program. (line 6) * private variables: Library Names. (line 11) -* process group idIDof gawk process: Auto-set. (line 175) -* process ID of gawk process: Auto-set. (line 178) +* process group idIDof gawk process: Auto-set. (line 183) +* process ID of gawk process: Auto-set. (line 186) * processes, two-way communications with: Two-way I/O. (line 6) * processing data: Basic High Level. (line 6) * PROCINFO array <1>: Passwd Functions. (line 6) * PROCINFO array <2>: Time Functions. (line 47) -* PROCINFO array: Auto-set. (line 128) +* PROCINFO array: Auto-set. (line 136) * PROCINFO array, and communications via ptys: Two-way I/O. (line 99) * PROCINFO array, and group membership: Group Functions. (line 6) * PROCINFO array, and user and group ID numbers: Id Program. (line 15) * PROCINFO array, testing the field splitting: Passwd Functions. (line 161) -* PROCINFO array, uses: Auto-set. (line 234) +* PROCINFO array, uses: Auto-set. (line 242) * PROCINFO, values of sorted_in: Controlling Scanning. (line 26) * profiling awk programs: Profiling. (line 6) * profiling awk programs, dynamically: Profiling. (line 179) -* program identifiers: Auto-set. (line 146) +* program identifiers: Auto-set. (line 154) * program, definition of: Getting Started. (line 21) * programming conventions, --non-decimal-data option: Nondecimal Data. (line 36) @@ -33277,12 +33318,12 @@ Index * Rakitzis, Byron: History Sorting. (line 25) * Ramey, Chet <1>: General Data Types. (line 6) * Ramey, Chet: Acknowledgments. (line 60) -* rand: Numeric Functions. (line 35) +* rand: Numeric Functions. (line 50) * random numbers, Cliff: Cliff Random Function. (line 6) * random numbers, rand()/srand() functions: Numeric Functions. - (line 35) -* random numbers, seed of: Numeric Functions. (line 65) + (line 50) +* random numbers, seed of: Numeric Functions. (line 80) * range expressions (regexps): Bracket Expressions. (line 6) * range patterns: Ranges. (line 6) * range patterns, line continuation and: Ranges. (line 65) @@ -33352,7 +33393,7 @@ Index (line 59) * regular expressions, gawk, command-line options: GNU Regexp Operators. (line 70) -* regular expressions, interval expressions and: Options. (line 279) +* regular expressions, interval expressions and: Options. (line 277) * regular expressions, leftmost longest match: Leftmost Longest. (line 6) * regular expressions, operators <1>: Regexp Operators. (line 6) @@ -33392,7 +33433,7 @@ Index * right shift: Bitwise Functions. (line 52) * right shift, bitwise: Bitwise Functions. (line 32) * Ritchie, Dennis: Basic Data Typing. (line 54) -* RLENGTH variable: Auto-set. (line 244) +* RLENGTH variable: Auto-set. (line 252) * RLENGTH variable, match() function and: String Functions. (line 224) * Robbins, Arnold <1>: Future Extensions. (line 6) * Robbins, Arnold <2>: Bugs. (line 32) @@ -33410,7 +33451,7 @@ Index * Robbins, Miriam <2>: Getline/Pipe. (line 39) * Robbins, Miriam: Acknowledgments. (line 92) * Rommel, Kai Uwe: Contributors. (line 42) -* round to nearest integer: Numeric Functions. (line 23) +* round to nearest integer: Numeric Functions. (line 38) * round() user-defined function: Round Function. (line 16) * rounding numbers: Round Function. (line 6) * ROUNDMODE variable: User-modified. (line 128) @@ -33418,9 +33459,9 @@ Index * RS variable: awk split records. (line 12) * RS variable, multiline records and: Multiple Line. (line 17) * rshift: Bitwise Functions. (line 52) -* RSTART variable: Auto-set. (line 250) +* RSTART variable: Auto-set. (line 258) * RSTART variable, match() function and: String Functions. (line 224) -* RT variable <1>: Auto-set. (line 257) +* RT variable <1>: Auto-set. (line 265) * RT variable <2>: Multiple Line. (line 129) * RT variable: awk split records. (line 124) * Rubin, Paul <1>: Contributors. (line 15) @@ -33433,14 +33474,14 @@ Index (line 68) * sample debugging session: Sample Debugging Session. (line 6) -* sandbox mode: Options. (line 286) +* sandbox mode: Options. (line 284) * save debugger options: Debugger Info. (line 84) * scalar or array: Type Functions. (line 11) * scalar values: Basic Data Typing. (line 13) * scanning arrays: Scanning an Array. (line 6) * scanning multidimensional arrays: Multiscanning. (line 11) * Schorr, Andrew <1>: Contributors. (line 133) -* Schorr, Andrew <2>: Auto-set. (line 284) +* Schorr, Andrew <2>: Auto-set. (line 292) * Schorr, Andrew: Acknowledgments. (line 60) * Schreiber, Bert: Acknowledgments. (line 38) * Schreiber, Rita: Acknowledgments. (line 38) @@ -33460,7 +33501,7 @@ Index * sed utility <2>: Simple Sed. (line 6) * sed utility: Field Splitting Summary. (line 46) -* seeding random number generator: Numeric Functions. (line 65) +* seeding random number generator: Numeric Functions. (line 80) * semicolon (;), AWKPATH variable and: PC Using. (line 10) * semicolon (;), separating statements in actions <1>: Statements. (line 10) @@ -33525,7 +33566,7 @@ Index (line 114) * sidebar, Changing FS Does Not Affect the Fields: Field Splitting Summary. (line 38) -* sidebar, Changing NR and FNR: Auto-set. (line 299) +* sidebar, Changing NR and FNR: Auto-set. (line 307) * sidebar, Controlling Output Buffering with system(): I/O Functions. (line 138) * sidebar, Escape Sequences for Metacharacters: Escape Sequences. @@ -33562,8 +33603,8 @@ Index * SIGUSR1 signal, for dynamic profiling: Profiling. (line 188) * silent debugger command: Debugger Execution Control. (line 10) -* sin: Numeric Functions. (line 76) -* sine: Numeric Functions. (line 76) +* sin: Numeric Functions. (line 91) +* sine: Numeric Functions. (line 91) * single quote ('): One-shot. (line 15) * single quote (') in gawk command lines: Long. (line 33) * single quote ('), in shell commands: Quoting. (line 48) @@ -33613,10 +33654,10 @@ Index * sprintf() function, OFMT variable and: User-modified. (line 114) * sprintf() function, print/printf statements and: Round Function. (line 6) -* sqrt: Numeric Functions. (line 79) +* sqrt: Numeric Functions. (line 94) * square brackets ([]), regexp operator: Regexp Operators. (line 56) -* square root: Numeric Functions. (line 79) -* srand: Numeric Functions. (line 83) +* square root: Numeric Functions. (line 94) +* srand: Numeric Functions. (line 98) * stack frame: Debugging Terms. (line 10) * Stallman, Richard <1>: Glossary. (line 296) * Stallman, Richard <2>: Contributors. (line 23) @@ -33688,9 +33729,9 @@ Index * substr: String Functions. (line 479) * substring: String Functions. (line 479) * Sumner, Andrew: Other Versions. (line 64) -* supplementary groups of gawk process: Auto-set. (line 229) +* supplementary groups of gawk process: Auto-set. (line 237) * switch statement: Switch Statement. (line 6) -* SYMTAB array: Auto-set. (line 261) +* SYMTAB array: Auto-set. (line 269) * syntactic ambiguity: /= operator vs. /=.../ regexp constant: Assignment Ops. (line 148) * system: I/O Functions. (line 75) @@ -33868,10 +33909,10 @@ Index * variables, uninitialized, as array subscripts: Uninitialized Subscripts. (line 6) * variables, user-defined: Variables. (line 6) -* version of gawk: Auto-set. (line 199) -* version of gawk extension API: Auto-set. (line 224) -* version of GNU MP library: Auto-set. (line 210) -* version of GNU MPFR library: Auto-set. (line 206) +* version of gawk: Auto-set. (line 207) +* version of gawk extension API: Auto-set. (line 232) +* version of GNU MP library: Auto-set. (line 218) +* version of GNU MPFR library: Auto-set. (line 214) * vertical bar (|): Regexp Operators. (line 70) * vertical bar (|), | operator (I/O) <1>: Precedence. (line 65) * vertical bar (|), | operator (I/O): Getline/Pipe. (line 9) @@ -33905,7 +33946,7 @@ Index * whitespace, as field separators: Default Field Splitting. (line 6) * whitespace, functions, calling: Calling Built-in. (line 10) -* whitespace, newlines as: Options. (line 260) +* whitespace, newlines as: Options. (line 258) * Williams, Kent: Contributors. (line 34) * Woehlke, Matthew: Contributors. (line 79) * Woods, John: Contributors. (line 27) @@ -33999,510 +34040,510 @@ Node: Intro Summary109829 Node: Invoking Gawk110595 Node: Command Line112110 Node: Options112901 -Ref: Options-Footnote-1128699 -Node: Other Arguments128724 -Node: Naming Standard Input131386 -Node: Environment Variables132479 -Node: AWKPATH Variable133037 -Ref: AWKPATH Variable-Footnote-1135903 -Ref: AWKPATH Variable-Footnote-2135948 -Node: AWKLIBPATH Variable136208 -Node: Other Environment Variables136967 -Node: Exit Status140624 -Node: Include Files141299 -Node: Loading Shared Libraries144877 -Node: Obsolete146261 -Node: Undocumented146958 -Node: Invoking Summary147225 -Node: Regexp148825 -Node: Regexp Usage150275 -Node: Escape Sequences152308 -Node: Regexp Operators158139 -Ref: Regexp Operators-Footnote-1165619 -Ref: Regexp Operators-Footnote-2165766 -Node: Bracket Expressions165864 -Ref: table-char-classes167754 -Node: GNU Regexp Operators170694 -Node: Case-sensitivity174417 -Ref: Case-sensitivity-Footnote-1177309 -Ref: Case-sensitivity-Footnote-2177544 -Node: Leftmost Longest177652 -Node: Computed Regexps178853 -Node: Regexp Summary182225 -Node: Reading Files183694 -Node: Records185786 -Node: awk split records186529 -Node: gawk split records191387 -Ref: gawk split records-Footnote-1195908 -Node: Fields195945 -Ref: Fields-Footnote-1198909 -Node: Nonconstant Fields198995 -Ref: Nonconstant Fields-Footnote-1201225 -Node: Changing Fields201427 -Node: Field Separators207381 -Node: Default Field Splitting210083 -Node: Regexp Field Splitting211200 -Node: Single Character Fields214541 -Node: Command Line Field Separator215600 -Node: Full Line Fields219026 -Ref: Full Line Fields-Footnote-1219534 -Node: Field Splitting Summary219580 -Ref: Field Splitting Summary-Footnote-1222712 -Node: Constant Size222813 -Node: Splitting By Content227419 -Ref: Splitting By Content-Footnote-1231492 -Node: Multiple Line231532 -Ref: Multiple Line-Footnote-1237388 -Node: Getline237567 -Node: Plain Getline239783 -Node: Getline/Variable241878 -Node: Getline/File243025 -Node: Getline/Variable/File244409 -Ref: Getline/Variable/File-Footnote-1246008 -Node: Getline/Pipe246095 -Node: Getline/Variable/Pipe248794 -Node: Getline/Coprocess249901 -Node: Getline/Variable/Coprocess251153 -Node: Getline Notes251890 -Node: Getline Summary254694 -Ref: table-getline-variants255102 -Node: Read Timeout256014 -Ref: Read Timeout-Footnote-1259841 -Node: Command-line directories259899 -Node: Input Summary260803 -Node: Input Exercises263940 -Node: Printing264673 -Node: Print266395 -Node: Print Examples267736 -Node: Output Separators270515 -Node: OFMT272531 -Node: Printf273889 -Node: Basic Printf274795 -Node: Control Letters276334 -Node: Format Modifiers280325 -Node: Printf Examples286352 -Node: Redirection288816 -Node: Special Files295788 -Node: Special FD296321 -Ref: Special FD-Footnote-1299918 -Node: Special Network299992 -Node: Special Caveats300842 -Node: Close Files And Pipes301638 -Ref: Close Files And 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Debugging826031 +Node: Sample Debugging Session826923 +Node: Debugger Invocation827443 +Node: Finding The Bug828776 +Node: List of Debugger Commands835258 +Node: Breakpoint Control836590 +Node: Debugger Execution Control840254 +Node: Viewing And Changing Data843614 +Node: Execution Stack846972 +Node: Debugger Info848485 +Node: Miscellaneous Debugger Commands852479 +Node: Readline Support857663 +Node: Limitations858555 +Node: Debugging Summary860829 +Node: Arbitrary Precision Arithmetic861997 +Node: Computer Arithmetic863484 +Ref: Computer Arithmetic-Footnote-1867871 +Node: Math Definitions867928 +Ref: table-ieee-formats871217 +Ref: Math Definitions-Footnote-1871757 +Node: MPFR features871860 +Node: FP Math Caution873477 +Ref: FP Math Caution-Footnote-1874527 +Node: Inexactness of computations874896 +Node: Inexact representation875844 +Node: Comparing FP Values877199 +Node: Errors accumulate878163 +Node: Getting Accuracy879596 +Node: Try To Round882255 +Node: Setting precision883154 +Ref: table-predefined-precision-strings883836 +Node: Setting the rounding mode885629 +Ref: table-gawk-rounding-modes885993 +Ref: Setting the rounding mode-Footnote-1889447 +Node: Arbitrary Precision Integers889626 +Ref: Arbitrary Precision Integers-Footnote-1893399 +Node: POSIX Floating Point Problems893548 +Ref: POSIX Floating Point Problems-Footnote-1897424 +Node: Floating point summary897462 +Node: Dynamic Extensions899666 +Node: Extension Intro901218 +Node: Plugin License902483 +Node: Extension Mechanism Outline903168 +Ref: figure-load-extension903592 +Ref: figure-load-new-function905077 +Ref: figure-call-new-function906079 +Node: Extension API Description908063 +Node: Extension API Functions Introduction909513 +Node: General Data Types914380 +Ref: General Data Types-Footnote-1920073 +Node: Requesting Values920372 +Ref: table-value-types-returned921109 +Node: Memory Allocation Functions922067 +Ref: Memory Allocation Functions-Footnote-1924814 +Node: Constructor Functions924910 +Node: Registration Functions926668 +Node: Extension Functions927353 +Node: Exit Callback Functions929655 +Node: Extension Version String930903 +Node: Input Parsers931553 +Node: Output Wrappers941367 +Node: Two-way processors945883 +Node: Printing Messages948087 +Ref: Printing Messages-Footnote-1949164 +Node: Updating `ERRNO'949316 +Node: Accessing Parameters950055 +Node: Symbol Table Access951285 +Node: Symbol table by name951799 +Node: Symbol table by cookie953775 +Ref: Symbol table by cookie-Footnote-1957908 +Node: Cached values957971 +Ref: Cached values-Footnote-1961475 +Node: Array Manipulation961566 +Ref: Array Manipulation-Footnote-1962664 +Node: Array Data Types962703 +Ref: Array Data Types-Footnote-1965406 +Node: Array Functions965498 +Node: Flattening Arrays969372 +Node: Creating Arrays976224 +Node: Extension API Variables980955 +Node: Extension Versioning981591 +Node: Extension API Informational Variables983492 +Node: Extension API Boilerplate984578 +Node: Finding Extensions988382 +Node: Extension Example988942 +Node: Internal File Description989672 +Node: Internal File Ops993763 +Ref: Internal File Ops-Footnote-11005195 +Node: Using Internal File Ops1005335 +Ref: Using Internal File Ops-Footnote-11007682 +Node: Extension Samples1007950 +Node: Extension Sample File Functions1009474 +Node: Extension Sample Fnmatch1017042 +Node: Extension Sample Fork1018524 +Node: Extension Sample Inplace1019737 +Node: Extension Sample Ord1021412 +Node: Extension Sample Readdir1022248 +Ref: table-readdir-file-types1023104 +Node: Extension Sample Revout1023903 +Node: Extension Sample Rev2way1024494 +Node: Extension Sample Read write array1025235 +Node: Extension Sample Readfile1027114 +Node: Extension Sample API Tests1028214 +Node: Extension Sample Time1028739 +Node: gawkextlib1030054 +Node: Extension summary1032867 +Node: Extension Exercises1036560 +Node: Language History1037282 +Node: V7/SVR3.11038925 +Node: SVR41041245 +Node: POSIX1042687 +Node: BTL1044073 +Node: POSIX/GNU1044807 +Node: Feature History1050548 +Node: Common Extensions1063678 +Node: Ranges and Locales1064990 +Ref: Ranges and Locales-Footnote-11069607 +Ref: Ranges and Locales-Footnote-21069634 +Ref: Ranges and Locales-Footnote-31069868 +Node: Contributors1070089 +Node: History summary1075514 +Node: Installation1076883 +Node: Gawk Distribution1077834 +Node: Getting1078318 +Node: Extracting1079142 +Node: Distribution contents1080784 +Node: Unix Installation1086554 +Node: Quick Installation1087171 +Node: Additional Configuration Options1089613 +Node: Configuration Philosophy1091351 +Node: Non-Unix Installation1093702 +Node: PC Installation1094160 +Node: PC Binary Installation1095471 +Node: PC Compiling1097319 +Ref: PC Compiling-Footnote-11100318 +Node: PC Testing1100423 +Node: PC Using1101599 +Node: Cygwin1105751 +Node: MSYS1106560 +Node: VMS Installation1107074 +Node: VMS Compilation1107870 +Ref: VMS Compilation-Footnote-11109092 +Node: VMS Dynamic Extensions1109150 +Node: VMS Installation Details1110523 +Node: VMS Running1112775 +Node: VMS GNV1115609 +Node: VMS Old Gawk1116332 +Node: Bugs1116802 +Node: Other Versions1120806 +Node: Installation summary1127061 +Node: Notes1128117 +Node: Compatibility Mode1128982 +Node: Additions1129764 +Node: Accessing The Source1130689 +Node: Adding Code1132125 +Node: New Ports1138303 +Node: Derived Files1142784 +Ref: Derived Files-Footnote-11147865 +Ref: Derived Files-Footnote-21147899 +Ref: Derived Files-Footnote-31148495 +Node: Future Extensions1148609 +Node: Implementation Limitations1149215 +Node: Extension Design1150463 +Node: Old Extension Problems1151617 +Ref: Old Extension Problems-Footnote-11153134 +Node: Extension New Mechanism Goals1153191 +Ref: Extension New Mechanism Goals-Footnote-11156551 +Node: Extension Other Design Decisions1156740 +Node: Extension Future Growth1158846 +Node: Old Extension Mechanism1159682 +Node: Notes summary1161444 +Node: Basic Concepts1162630 +Node: Basic High Level1163311 +Ref: figure-general-flow1163583 +Ref: figure-process-flow1164182 +Ref: Basic High Level-Footnote-11167411 +Node: Basic Data Typing1167596 +Node: Glossary1170924 +Node: Copying1196076 +Node: GNU Free Documentation License1233632 +Node: Index1258768 End Tag Table diff --git a/doc/gawk.texi b/doc/gawk.texi index 696e2a38..534722e1 100644 --- a/doc/gawk.texi +++ b/doc/gawk.texi @@ -3860,10 +3860,8 @@ No space is allowed between the @option{-o} and @var{file}, if @var{file} is supplied. @quotation NOTE -Due to the way @command{gawk} has evolved, with this option -your program is still executed. This will change in the -next major release such that @command{gawk} will only -pretty-print the program and not run it. +In the past, this option would also execute your program. +This is no longer the case. @end quotation @item @option{-O} @@ -4349,11 +4347,6 @@ two regexp matchers that @command{gawk} uses internally. (There aren't supposed to be differences, but occasionally theory and practice don't coordinate with each other.) -@item GAWK_NO_PP_RUN -If this variable exists, then when invoked with the @option{--pretty-print} -option, @command{gawk} skips running the program. This variable will -not survive into the next major release. - @item GAWK_STACKSIZE This specifies the amount by which @command{gawk} should grow its internal evaluation stack, when needed. @@ -14548,10 +14541,18 @@ next file is opened. An associative array containing the values of the environment. The array indices are the environment variable names; the elements are the values of the particular environment variables. For example, -@code{ENVIRON["HOME"]} might be @code{"/home/arnold"}. Changing this array -does not affect the environment passed on to any programs that -@command{awk} may spawn via redirection or the @code{system()} function. -(In a future version of @command{gawk}, it may do so.) +@code{ENVIRON["HOME"]} might be @code{/home/arnold}. + +For POSIX @command{awk}, changing this array does not affect the +environment passed on to any programs that @command{awk} may spawn via +redirection or the @code{system()} function. + +However, beginning with version 4.2, if not in POSIX +compatibility mode, @command{gawk} does update its own environment when +@code{ENVIRON} is changed, thus changing the environment seen by programs +that it creates. You should therefore be especially careful if you +modify @code{ENVIRON["PATH"]"}, which is the search path for finding +executable programs. Some operating systems may not have environment variables. On such systems, the @code{ENVIRON} array is empty (except for @@ -16640,6 +16641,23 @@ You can use @samp{pi = atan2(0, -1)} to retrieve the value of @cindex cosine Return the cosine of @var{x}, with @var{x} in radians. +@item @code{div(@var{numerator}, @var{denominator}, @var{result})} +@cindexawkfunc{div} +@cindex div +Perform integer division, similar to the standard C function of the +same name. First, truncate @code{numerator} and @code{denominator} +towards zero, creating integer values. Clear the @code{result} +array, and then set @code{result["quotient"]} to the result of +@samp{numerator / denominator}, truncated towards zero to an integer, +and set @code{result["remainder"]} to the result of @samp{numerator % +denominator}, truncated towards zero to an integer. This function is +primarily intended for use with arbitrary length integers; it avoids +creating MPFR arbitrary precision floating-point values (@pxref{Arbitrary +Precision Integers}). + +This function is a @code{gawk} extension. It is not available in +compatibility mode (@pxref{Options}). + @item @code{exp(@var{x})} @cindexawkfunc{exp} @cindex exponent @@ -27504,8 +27522,8 @@ When called this way, @command{gawk} ``pretty prints'' the program into @file{awkprof.out}, without any execution counts. @quotation NOTE -The @option{--pretty-print} option still runs your program. -This will change in the next major release. +Once upon a time, the @option{--pretty-print} option would also run +your program. This is is no longer the case. @end quotation @c ENDOFRANGE awkp @c ENDOFRANGE proawk @@ -30525,6 +30543,45 @@ to just use the following: gawk -M 'BEGIN @{ n = 13; print n % 2 @}' @end example +When dividing two arbitrary precision integers with either +@samp{/} or @samp{%}, the result is typically an arbitrary +precision floating point value (unless the denominator evenly +divides into the numerator). In order to do integer division +or remainder with arbitrary precision integers, use the built-in +@code{div()} function (@pxref{Numeric Functions}). + +You can simulate the @code{div()} function in standard @command{awk} +using this user-defined function: + +@example +@c file eg/lib/div.awk +# div --- do integer division + +@c endfile +@ignore +@c file eg/lib/div.awk +# +# Arnold Robbins, arnold@@skeeve.com, Public Domain +# July, 2014 + +@c endfile + +@end ignore +@c file eg/lib/div.awk +function div(numerator, denominator, result, i) +@{ + split("", result) + + numerator = int(numerator) + denominator = int(denominator) + result["quotient"] = int(numerator / denominator) + result["remainder"] = int(numerator % denominator) + + return 0.0 +@} +@c endfile +@end example + @node POSIX Floating Point Problems @section Standards Versus Existing Practice @@ -36628,6 +36685,8 @@ The generated Info file for The @command{troff} source for a manual page describing the @command{igawk} program presented in @ref{Igawk Program}. +(Since @command{gawk} can do its own @code{@@include} processing, +neither @command{igawk} nor @file{igawk.1} are installed.) @item doc/Makefile.in The input file used during the configuration process to generate the @@ -36672,8 +36731,6 @@ source file for this @value{DOCUMENT}. It also contains a @file{Makefile.in} fil @file{Makefile.am} is used by GNU Automake to create @file{Makefile.in}. The library functions from @ref{Library Functions}, -and the @command{igawk} program from -@ref{Igawk Program}, are included as ready-to-use files in the @command{gawk} distribution. They are installed as part of the installation process. The rest of the programs in this @value{DOCUMENT} are available in appropriate @@ -37719,9 +37776,10 @@ mail at the Internet address noted previously. If you find bugs in one of the non-Unix ports of @command{gawk}, please send an electronic mail message to the person who maintains that port. They -are named in the following list, as well as in the @file{README} file in the @command{gawk} -distribution. Information in the @file{README} file should be considered -authoritative if it conflicts with this @value{DOCUMENT}. +are named in the following list, as well as in the @file{README} file +in the @command{gawk} distribution. Information in the @file{README} +file should be considered authoritative if it conflicts with this +@value{DOCUMENT}. The people maintaining the non-Unix ports of @command{gawk} are as follows: @@ -37749,7 +37807,8 @@ John Malmberg, @EMAIL{wb8tyw@@qsl.net,wb8tyw at qsl.net}. @end multitable If your bug is also reproducible under Unix, please send a copy of your -report to the @EMAIL{bug-gawk@@gnu.org,bug-gawk at gnu dot org} email list as well. +report to the @EMAIL{bug-gawk@@gnu.org,bug-gawk at gnu dot org} email +list as well. @c ENDOFRANGE dbugg @c ENDOFRANGE tblgawb diff --git a/doc/gawktexi.in b/doc/gawktexi.in index 43c4976c..52e61eea 100644 --- a/doc/gawktexi.in +++ b/doc/gawktexi.in @@ -3788,10 +3788,8 @@ No space is allowed between the @option{-o} and @var{file}, if @var{file} is supplied. @quotation NOTE -Due to the way @command{gawk} has evolved, with this option -your program is still executed. This will change in the -next major release such that @command{gawk} will only -pretty-print the program and not run it. +In the past, this option would also execute your program. +This is no longer the case. @end quotation @item @option{-O} @@ -4277,11 +4275,6 @@ two regexp matchers that @command{gawk} uses internally. (There aren't supposed to be differences, but occasionally theory and practice don't coordinate with each other.) -@item GAWK_NO_PP_RUN -If this variable exists, then when invoked with the @option{--pretty-print} -option, @command{gawk} skips running the program. This variable will -not survive into the next major release. - @item GAWK_STACKSIZE This specifies the amount by which @command{gawk} should grow its internal evaluation stack, when needed. @@ -13899,10 +13892,18 @@ next file is opened. An associative array containing the values of the environment. The array indices are the environment variable names; the elements are the values of the particular environment variables. For example, -@code{ENVIRON["HOME"]} might be @code{"/home/arnold"}. Changing this array -does not affect the environment passed on to any programs that -@command{awk} may spawn via redirection or the @code{system()} function. -(In a future version of @command{gawk}, it may do so.) +@code{ENVIRON["HOME"]} might be @code{/home/arnold}. + +For POSIX @command{awk}, changing this array does not affect the +environment passed on to any programs that @command{awk} may spawn via +redirection or the @code{system()} function. + +However, beginning with version 4.2, if not in POSIX +compatibility mode, @command{gawk} does update its own environment when +@code{ENVIRON} is changed, thus changing the environment seen by programs +that it creates. You should therefore be especially careful if you +modify @code{ENVIRON["PATH"]"}, which is the search path for finding +executable programs. Some operating systems may not have environment variables. On such systems, the @code{ENVIRON} array is empty (except for @@ -15945,6 +15946,23 @@ You can use @samp{pi = atan2(0, -1)} to retrieve the value of @cindex cosine Return the cosine of @var{x}, with @var{x} in radians. +@item @code{div(@var{numerator}, @var{denominator}, @var{result})} +@cindexawkfunc{div} +@cindex div +Perform integer division, similar to the standard C function of the +same name. First, truncate @code{numerator} and @code{denominator} +towards zero, creating integer values. Clear the @code{result} +array, and then set @code{result["quotient"]} to the result of +@samp{numerator / denominator}, truncated towards zero to an integer, +and set @code{result["remainder"]} to the result of @samp{numerator % +denominator}, truncated towards zero to an integer. This function is +primarily intended for use with arbitrary length integers; it avoids +creating MPFR arbitrary precision floating-point values (@pxref{Arbitrary +Precision Integers}). + +This function is a @code{gawk} extension. It is not available in +compatibility mode (@pxref{Options}). + @item @code{exp(@var{x})} @cindexawkfunc{exp} @cindex exponent @@ -26619,8 +26637,8 @@ When called this way, @command{gawk} ``pretty prints'' the program into @file{awkprof.out}, without any execution counts. @quotation NOTE -The @option{--pretty-print} option still runs your program. -This will change in the next major release. +Once upon a time, the @option{--pretty-print} option would also run +your program. This is is no longer the case. @end quotation @c ENDOFRANGE awkp @c ENDOFRANGE proawk @@ -29640,6 +29658,45 @@ to just use the following: gawk -M 'BEGIN @{ n = 13; print n % 2 @}' @end example +When dividing two arbitrary precision integers with either +@samp{/} or @samp{%}, the result is typically an arbitrary +precision floating point value (unless the denominator evenly +divides into the numerator). In order to do integer division +or remainder with arbitrary precision integers, use the built-in +@code{div()} function (@pxref{Numeric Functions}). + +You can simulate the @code{div()} function in standard @command{awk} +using this user-defined function: + +@example +@c file eg/lib/div.awk +# div --- do integer division + +@c endfile +@ignore +@c file eg/lib/div.awk +# +# Arnold Robbins, arnold@@skeeve.com, Public Domain +# July, 2014 + +@c endfile + +@end ignore +@c file eg/lib/div.awk +function div(numerator, denominator, result, i) +@{ + split("", result) + + numerator = int(numerator) + denominator = int(denominator) + result["quotient"] = int(numerator / denominator) + result["remainder"] = int(numerator % denominator) + + return 0.0 +@} +@c endfile +@end example + @node POSIX Floating Point Problems @section Standards Versus Existing Practice @@ -35743,6 +35800,8 @@ The generated Info file for The @command{troff} source for a manual page describing the @command{igawk} program presented in @ref{Igawk Program}. +(Since @command{gawk} can do its own @code{@@include} processing, +neither @command{igawk} nor @file{igawk.1} are installed.) @item doc/Makefile.in The input file used during the configuration process to generate the @@ -35787,8 +35846,6 @@ source file for this @value{DOCUMENT}. It also contains a @file{Makefile.in} fil @file{Makefile.am} is used by GNU Automake to create @file{Makefile.in}. The library functions from @ref{Library Functions}, -and the @command{igawk} program from -@ref{Igawk Program}, are included as ready-to-use files in the @command{gawk} distribution. They are installed as part of the installation process. The rest of the programs in this @value{DOCUMENT} are available in appropriate @@ -36834,9 +36891,10 @@ mail at the Internet address noted previously. If you find bugs in one of the non-Unix ports of @command{gawk}, please send an electronic mail message to the person who maintains that port. They -are named in the following list, as well as in the @file{README} file in the @command{gawk} -distribution. Information in the @file{README} file should be considered -authoritative if it conflicts with this @value{DOCUMENT}. +are named in the following list, as well as in the @file{README} file +in the @command{gawk} distribution. Information in the @file{README} +file should be considered authoritative if it conflicts with this +@value{DOCUMENT}. The people maintaining the non-Unix ports of @command{gawk} are as follows: @@ -36864,7 +36922,8 @@ John Malmberg, @EMAIL{wb8tyw@@qsl.net,wb8tyw at qsl.net}. @end multitable If your bug is also reproducible under Unix, please send a copy of your -report to the @EMAIL{bug-gawk@@gnu.org,bug-gawk at gnu dot org} email list as well. +report to the @EMAIL{bug-gawk@@gnu.org,bug-gawk at gnu dot org} email +list as well. @c ENDOFRANGE dbugg @c ENDOFRANGE tblgawb |