| # |
| # This function determins if the the isinf function isavailable on this |
| # platform. |
| # |
| AC_DEFUN([AC_FUNC_ISINF],[ |
| AC_SINGLE_CXX_CHECK([HAVE_ISINF_IN_MATH_H], [ac_cv_func_isinf_in_math_h], |
| [isinf], [<math.h>], |
| [#include <math.h> |
| int foo(float f) {return isinf(f);}]) |
| AC_SINGLE_CXX_CHECK([HAVE_ISINF_IN_CMATH], [ac_cv_func_isinf_in_cmath], |
| [isinf], [<cmath>], |
| [#include <cmath> |
| int foo(float f) {return isinf(f);}]) |
| AC_SINGLE_CXX_CHECK([HAVE_STD_ISINF_IN_CMATH], [ac_cv_func_std_isinf_in_cmath], |
| [std::isinf], [<cmath>], |
| [#include <cmath> |
| using std::isinf; int foo(float f) {return isinf(f);}]) |
| AC_SINGLE_CXX_CHECK([HAVE_FINITE_IN_IEEEFP_H], [ac_cv_func_finite_in_ieeefp_h], |
| [finite], [<ieeefp.h>], |
| [#include <ieeefp.h> |
| int foo(float f) {return finite(f);}]) |
| ]) |
| |
| |