Commit | Line | Data |
---|---|---|
52414043 MW |
1 | # copysign.m4 serial 1 |
2 | dnl Copyright (C) 2011-2013 Free Software Foundation, Inc. | |
3 | dnl This file is free software; the Free Software Foundation | |
4 | dnl gives unlimited permission to copy and/or distribute it, | |
5 | dnl with or without modifications, as long as this notice is preserved. | |
6 | ||
7 | AC_DEFUN([gl_FUNC_COPYSIGN], | |
8 | [ | |
9 | AC_REQUIRE([gl_MATH_H_DEFAULTS]) | |
10 | ||
11 | dnl Determine COPYSIGN_LIBM. | |
12 | gl_MATHFUNC([copysign], [double], [(double, double)]) | |
13 | if test $gl_cv_func_copysign_no_libm = no \ | |
14 | && test $gl_cv_func_copysign_in_libm = no; then | |
15 | HAVE_COPYSIGN=0 | |
16 | COPYSIGN_LIBM= | |
17 | fi | |
18 | AC_SUBST([COPYSIGN_LIBM]) | |
19 | ]) |