Mercurial > hg > octave-lyh > gnulib-hg
changeset 14060:99b3a26ce54b
isnan: Use GCC built-ins when possible.
* lib/math.in.h (gl_isnan_f): Use __builtin_isnanf instead of
__builtin_isnan.
(gl_isnan_l): Use __builtin_isnanl instead of __builtin_isnan.
(isnan): Define using GCC built-ins for GCC >= 4.0.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Fri, 31 Dec 2010 15:03:46 +0100 |
parents | fedf2b2f460a |
children | 3d7ddb7340dd |
files | ChangeLog lib/math.in.h |
diffstat | 2 files changed, 16 insertions(+), 2 deletions(-) [+] |
line wrap: on
line diff
--- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,11 @@ +2010-12-31 Bruno Haible <bruno@clisp.org> + + isnan: Use GCC built-ins when possible. + * lib/math.in.h (gl_isnan_f): Use __builtin_isnanf instead of + __builtin_isnan. + (gl_isnan_l): Use __builtin_isnanl instead of __builtin_isnan. + (isnan): Define using GCC built-ins for GCC >= 4.0. + 2010-12-31 Bruno Haible <bruno@clisp.org> isnand: Fix mistake.
--- a/lib/math.in.h +++ b/lib/math.in.h @@ -699,7 +699,7 @@ that recursively expand back to isnan. So use the gnulib replacements for them directly. */ # if @HAVE_ISNANF@ && __GNUC__ >= 4 -# define gl_isnan_f(x) __builtin_isnan ((float)(x)) +# define gl_isnan_f(x) __builtin_isnanf ((float)(x)) # else _GL_EXTERN_C int rpl_isnanf (float x); # define gl_isnan_f(x) rpl_isnanf (x) @@ -711,7 +711,7 @@ # define gl_isnan_d(x) rpl_isnand (x) # endif # if @HAVE_ISNANL@ && __GNUC__ >= 4 -# define gl_isnan_l(x) __builtin_isnan ((long double)(x)) +# define gl_isnan_l(x) __builtin_isnanl ((long double)(x)) # else _GL_EXTERN_C int rpl_isnanl (long double x); # define gl_isnan_l(x) rpl_isnanl (x) @@ -721,6 +721,12 @@ (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \ sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \ gl_isnan_f (x)) +# elif __GNUC__ >= 4 +# undef isnan +# define isnan(x) \ + (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \ + sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \ + __builtin_isnanf ((float)(x))) # endif /* Ensure isnan is a macro. */ # ifndef isnan