diff options
Diffstat (limited to 'newlib/libc')
| -rw-r--r-- | newlib/libc/include/machine/ieeefp.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/newlib/libc/include/machine/ieeefp.h b/newlib/libc/include/machine/ieeefp.h index 570db14ef..b96f91274 100644 --- a/newlib/libc/include/machine/ieeefp.h +++ b/newlib/libc/include/machine/ieeefp.h @@ -1,6 +1,24 @@ #ifndef __IEEE_BIG_ENDIAN #ifndef __IEEE_LITTLE_ENDIAN +/* This file can define macros to choose variations of the IEEE float + format: + + _FLT_LARGEST_EXPONENT_IS_NORMAL + + Defined if the float format uses the largest exponent for finite + numbers rather than NaN and infinity representations. Such a + format cannot represent NaNs or infinities at all, but it's FLT_MAX + is twice the IEEE value. + + _FLT_NO_DENORMALS + + Defined if the float format does not support IEEE denormals. Every + float with a zero exponent is taken to be a zero representation. + + ??? At the moment, there are no equivalent macros for doubles and + the macros are not fully supported by --enable-newlib-hw-fp. */ + #if defined(__arm__) || defined(__thumb__) /* ARM always has big-endian words. Within those words the byte ordering appears to be big or little endian. Newlib doesn't seem to care about |