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| author | Bruno Haible <bruno@clisp.org> | 2019-01-20 22:28:37 +0100 |
|---|---|---|
| committer | Bruno Haible <bruno@clisp.org> | 2019-01-20 22:28:37 +0100 |
| commit | 67df3cffac300d320307e8d7e494029098edc334 (patch) | |
| tree | 16ec07f4fce54882c37030bef086e3c357f60f00 /lib/math.in.h | |
| parent | 0ac7b4317dbe2247c520d0f786926e9e520ba81c (diff) | |
| download | gnulib-67df3cffac300d320307e8d7e494029098edc334.tar.gz | |
expm1l: Work around inaccurate implementation on NetBSD.
* lib/math.in.h (expm1l): Test also REPLACE_EXPM1L.
* m4/expm1l.m4 (gl_FUNC_EXPM1L): Add test for a certain accuracy. Set
REPLACE_EXPM1L.
* m4/math_h.m4 (gl_MATH_H_DEFAULTS): Initialize REPLACE_EXPM1L.
* modules/math (Makefile.in): Substitute REPLACE_EXPM1L.
* modules/expm1l (Depends-on, configure.ac): Test REPLACE_EXPM1L.
* doc/posix-functions/expm1l.texi: Mention the NetBSD bug.
Diffstat (limited to 'lib/math.in.h')
| -rw-r--r-- | lib/math.in.h | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/lib/math.in.h b/lib/math.in.h index c5f9b466b1..270caaf4c8 100644 --- a/lib/math.in.h +++ b/lib/math.in.h @@ -760,11 +760,20 @@ _GL_WARN_ON_USE (expm1, "expm1 is unportable - " #endif #if @GNULIB_EXPM1L@ -# if !@HAVE_DECL_EXPM1L@ -# undef expm1l +# if @REPLACE_EXPM1L@ +# if !(defined __cplusplus && defined GNULIB_NAMESPACE) +# undef expm1l +# define expm1l rpl_expm1l +# endif +_GL_FUNCDECL_RPL (expm1l, long double, (long double x)); +_GL_CXXALIAS_RPL (expm1l, long double, (long double x)); +# else +# if !@HAVE_DECL_EXPM1L@ +# undef expm1l _GL_FUNCDECL_SYS (expm1l, long double, (long double x)); -# endif +# endif _GL_CXXALIAS_SYS (expm1l, long double, (long double x)); +# endif _GL_CXXALIASWARN (expm1l); #elif defined GNULIB_POSIXCHECK # undef expm1l |