- AC_CACHE_CHECK([whether frexp can be used without linking with libm],
- [gl_cv_func_frexp_no_libm],
- [
- AC_TRY_LINK([#include <math.h>
- double x;
- int y;],
- [return frexp (x, &y) < 1;],
- [gl_cv_func_frexp_no_libm=yes],
- [gl_cv_func_frexp_no_libm=no])
- ])