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Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 10 |
1 files changed, 10 insertions, 0 deletions
@@ -1,3 +1,13 @@ +2015-05-26 Paul Eggert <eggert@Penguin.CS.UCLA.EDU> + + * floatcomp.c (count_trailing_zeros): New function. + This compiles to a single TZCNT instruction on the x86-64. + (adjust_uint): Use it to keep more high-order bits when + some of the lowest-order bits are zero. This implements + the documented behavior: "If the result cannot be represented + exactly as a C 'double', leading nonzero bits are removed one by + one until it can be represented exactly." + 2015-05-26 Arnold D. Robbins <arnold@skeeve.com> * regcomp.c: Fix offsets so error messages come out correct |