| Reid Spencer | 53ecd51 | 2004-09-07 14:23:53 +0000 | [diff] [blame^] | 1 | # |
| 2 | # This function determins if the the isinf function isavailable on this |
| 3 | # platform. |
| 4 | # |
| 5 | AC_DEFUN([AC_FUNC_ISINF],[ |
| 6 | AC_SINGLE_CXX_CHECK([HAVE_ISINF_IN_MATH_H], [ac_cv_func_isinf_in_math_h], |
| 7 | [isinf], [<math.h>], |
| 8 | [#include <math.h> |
| 9 | int foo(float f) {return isinf(f);}]) |
| 10 | AC_SINGLE_CXX_CHECK([HAVE_ISINF_IN_CMATH], [ac_cv_func_isinf_in_cmath], |
| 11 | [isinf], [<cmath>], |
| 12 | [#include <cmath> |
| 13 | int foo(float f) {return isinf(f);}]) |
| 14 | AC_SINGLE_CXX_CHECK([HAVE_STD_ISINF_IN_CMATH], [ac_cv_func_std_isinf_in_cmath], |
| 15 | [std::isinf], [<cmath>], |
| 16 | [#include <cmath> |
| 17 | using std::isinf; int foo(float f) {return isinf(f);}]) |
| 18 | AC_SINGLE_CXX_CHECK([HAVE_FINITE_IN_IEEEFP_H], [ac_cv_func_finite_in_ieeefp_h], |
| 19 | [finite], [<ieeefp.h>], |
| 20 | [#include <ieeefp.h> |
| 21 | int foo(float f) {return finite(f);}]) |
| 22 | ]) |
| 23 | |
| 24 | |