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GNU C Library master sources branch master updated. glibc-2.24-30-g412cb26
- From: jsm28 at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 3 Aug 2016 22:22:01 -0000
- Subject: GNU C Library master sources branch master updated. glibc-2.24-30-g412cb26
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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=412cb261b0d66ef5251d7d1c8276b5c522d943b7
commit 412cb261b0d66ef5251d7d1c8276b5c522d943b7
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Aug 3 22:21:37 2016 +0000
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].
diff --git a/ChangeLog b/ChangeLog
index 954af37..ac692dc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,17 @@
2016-08-03 Joseph Myers <joseph@codesourcery.com>
+ * 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].
+
* manual/arith.texi (nextup): Fix typo in last change.
2016-08-03 Zack Weinberg <zackw@panix.com>
diff --git a/NEWS b/NEWS
index 25c771d..fe9ff1c 100644
--- a/NEWS
+++ b/NEWS
@@ -17,6 +17,11 @@ Version 2.25
from that TS. Note that most features from that TS are not supported by
the GNU C Library.
+* The feature test macro __STDC_WANT_IEC_60559_FUNCS_EXT__, from ISO/IEC TS
+ 18661-4:2015, is supported to enable declarations of functions and macros
+ from that TS. Note that most features from that TS are not supported by
+ the GNU C Library.
+
* The inclusion of <sys/sysmacros.h> by <sys/types.h> is deprecated. This
means that in a future release, the macros â??majorâ??, â??minorâ??, and â??makedevâ??
will only be available from <sys/sysmacros.h>.
diff --git a/bits/libc-header-start.h b/bits/libc-header-start.h
index 6a58505..ee6a876 100644
--- a/bits/libc-header-start.h
+++ b/bits/libc-header-start.h
@@ -50,3 +50,12 @@
#else
# define __GLIBC_USE_IEC_60559_BFP_EXT 0
#endif
+
+/* ISO/IEC TS 18661-4:2015 defines the
+ __STDC_WANT_IEC_60559_FUNCS_EXT__ macro. */
+#undef __GLIBC_USE_IEC_60559_FUNCS_EXT
+#if defined __USE_GNU || defined __STDC_WANT_IEC_60559_FUNCS_EXT__
+# define __GLIBC_USE_IEC_60559_FUNCS_EXT 1
+#else
+# define __GLIBC_USE_IEC_60559_FUNCS_EXT 0
+#endif
diff --git a/include/features.h b/include/features.h
index 554c5c8..650d4c5 100644
--- a/include/features.h
+++ b/include/features.h
@@ -26,6 +26,8 @@
_ISOC11_SOURCE Extensions to ISO C99 from ISO C11.
__STDC_WANT_LIB_EXT2__ Extensions to ISO C99 from TR 27431-2:2010.
__STDC_WANT_IEC_60559_BFP_EXT__ Extensions to ISO C11 from TS 18661-1:2014.
+ __STDC_WANT_IEC_60559_FUNCS_EXT__ Extensions to ISO C11 from
+ TS 18661-4:2015.
_POSIX_SOURCE IEEE Std 1003.1.
_POSIX_C_SOURCE If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
if >=199309L, add IEEE Std 1003.1b-1993;
diff --git a/manual/creature.texi b/manual/creature.texi
index 61b17ce..257f871 100644
--- a/manual/creature.texi
+++ b/manual/creature.texi
@@ -183,6 +183,15 @@ are enabled. Only some of the features from this TS are supported by
@end defvr
@comment (none)
+@comment ISO
+@defvr Macro __STDC_WANT_IEC_60559_FUNCS_EXT__
+If you define this macro, features from ISO/IEC TS 18661-4:2015
+(Floating-point extensions for C: Supplementary functions) are
+enabled. Only some of the features from this TS are supported by
+@theglibc{}.
+@end defvr
+
+@comment (none)
@comment GNU
@defvr Macro _GNU_SOURCE
If you define this macro, everything is included: @w{ISO C89}, @w{ISO
diff --git a/manual/math.texi b/manual/math.texi
index 5c9f7b9..d689820 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
diff --git a/math/bits/mathcalls.h b/math/bits/mathcalls.h
index e1c0521..951a3d0 100644
--- a/math/bits/mathcalls.h
+++ b/math/bits/mathcalls.h
@@ -115,9 +115,11 @@ __MATHCALL (log10,, (_Mdouble_ __x));
__MATHCALL (modf,, (_Mdouble_ __x, _Mdouble_ *__iptr)) __nonnull ((2));
_Mdouble_END_NAMESPACE
-#ifdef __USE_GNU
-/* A function missing in all standards: compute exponent to base ten. */
+#if __GLIBC_USE (IEC_60559_FUNCS_EXT)
+/* Compute exponent to base ten. */
__MATHCALL (exp10,, (_Mdouble_ __x));
+#endif
+#ifdef __USE_GNU
/* Another name occasionally used. */
__MATHCALL (pow10,, (_Mdouble_ __x));
#endif
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 12 ++++++++++++
NEWS | 5 +++++
bits/libc-header-start.h | 9 +++++++++
include/features.h | 2 ++
manual/creature.texi | 9 +++++++++
manual/math.texi | 9 +++++----
math/bits/mathcalls.h | 6 ++++--
7 files changed, 46 insertions(+), 6 deletions(-)
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