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| author | Bruno Haible <bruno@clisp.org> | 2019-04-13 00:17:58 +0200 |
|---|---|---|
| committer | Bruno Haible <bruno@clisp.org> | 2019-04-13 00:18:43 +0200 |
| commit | c2b2754fd365c27d488604edd42cacfff7d5d360 (patch) | |
| tree | ce28def5627571b732c663a59d8ddb34d802eea3 /lib | |
| parent | ba61bd3ba2d450a2c23d52e623a27cd94450cb94 (diff) | |
| download | gnulib-c2b2754fd365c27d488604edd42cacfff7d5d360.tar.gz | |
signbit: Fix compilation error when gnulib's math.h exists twice.
* lib/math.in.h (GNULIB_defined_signbit): New macro.
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/math.in.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/math.in.h b/lib/math.in.h index aa03ea3a04..99a2c6a979 100644 --- a/lib/math.in.h +++ b/lib/math.in.h @@ -2379,7 +2379,7 @@ _GL_WARN_REAL_FLOATING_DECL (isnan); sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \ __builtin_signbitf (x)) # endif -# if @REPLACE_SIGNBIT@ +# if @REPLACE_SIGNBIT@ && !GNULIB_defined_signbit # undef signbit _GL_EXTERN_C int gl_signbitf (float arg); _GL_EXTERN_C int gl_signbitd (double arg); @@ -2422,6 +2422,7 @@ _GL_EXTERN_C int gl_signbitl (long double arg); (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \ sizeof (x) == sizeof (double) ? gl_signbitd (x) : \ gl_signbitf (x)) +# define GNULIB_defined_signbit 1 # endif # ifdef __cplusplus # if defined signbit || defined GNULIB_NAMESPACE |