diff options
| author | Joseph Myers <joseph@codesourcery.com> | 2016-08-03 22:21:37 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2016-08-03 22:21:37 +0000 |
| commit | 412cb261b0d66ef5251d7d1c8276b5c522d943b7 (patch) | |
| tree | a1761d0c902d348f6a8c00c7a155dee2c3cd026d /manual/math.texi | |
| parent | 71b480444799983c2dc4f512671c47f78d99ac13 (diff) | |
Support __STDC_WANT_IEC_60559_FUNCS_EXT__ feature test macro.
This patch implements support for the
__STDC_WANT_IEC_60559_FUNCS_EXT__ feature test macro, following the
__GLIBC_USE approach used for other ISO C feature test macros.
Currently this only affects the exp10 functions (which glibc has had
for a long time).
Tested for x86_64 and x86 (testsuite, and that installed stripped
shared libraries are unchanged by the patch).
* bits/libc-header-start.h (__GLIBC_USE_IEC_60559_FUNCS_EXT): New
macro.
* include/features.h (__STDC_WANT_IEC_60559_FUNCS_EXT__):
Document.
* manual/creature.texi (__STDC_WANT_IEC_60559_FUNCS_EXT__):
Document macro.
* manual/math.texi (exp10): Document as ISO from TS 18661-4:2015.
(exp10f): Likewise.
(exp10l): Likewise.
* math/bits/mathcalls.h (exp10): Declare if
[__GLIBC_USE (IEC_60559_FUNCS_EXT)], not [__USE_GNU].
Diffstat (limited to 'manual/math.texi')
| -rw-r--r-- | manual/math.texi | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/manual/math.texi b/manual/math.texi index 5c9f7b9f1c..d689820c6c 100644 --- a/manual/math.texi +++ b/manual/math.texi @@ -480,13 +480,13 @@ Mathematically, @code{exp2 (x)} is the same as @code{exp (x * log (2))}. @end deftypefun @comment math.h -@comment GNU +@comment ISO @deftypefun double exp10 (double @var{x}) @comment math.h -@comment GNU +@comment ISO @deftypefunx float exp10f (float @var{x}) @comment math.h -@comment GNU +@comment ISO @deftypefunx {long double} exp10l (long double @var{x}) @comment math.h @comment GNU @@ -501,7 +501,8 @@ Mathematically, @code{exp2 (x)} is the same as @code{exp (x * log (2))}. These functions compute @code{10} raised to the power @var{x}. Mathematically, @code{exp10 (x)} is the same as @code{exp (x * log (10))}. -These functions are GNU extensions. The name @code{exp10} is +The @code{exp10} functions are from TS 18661-4:2015; the @code{pow10} +names are GNU extensions. The name @code{exp10} is preferred, since it is analogous to @code{exp} and @code{exp2}. @end deftypefun |