| |
| dnl Copyright (C) 2011-2023 Free Software Foundation, Inc. |
| dnl This file is free software; the Free Software Foundation |
| dnl gives unlimited permission to copy and/or distribute it, |
| dnl with or without modifications, as long as this notice is preserved. |
|
|
| AC_DEFUN([gl_FUNC_COPYSIGN], |
| [ |
| AC_REQUIRE([gl_MATH_H_DEFAULTS]) |
|
|
| dnl Determine COPYSIGN_LIBM. |
| gl_MATHFUNC([copysign], [double], [(double, double)]) |
| if test $gl_cv_func_copysign_no_libm = no \ |
| && test $gl_cv_func_copysign_in_libm = no; then |
| HAVE_COPYSIGN=0 |
| COPYSIGN_LIBM= |
| fi |
| AC_SUBST([COPYSIGN_LIBM]) |
| ]) |
|
|
