| dnl |
| dnl This function determins if the isinf function isavailable on this |
| dnl platform. |
| dnl |
| |
| AC_DEFUN([AC_FUNC_ISINF],[ |
| |
| AC_SINGLE_CXX_CHECK([ac_cv_func_isinf_in_math_h], |
| [isinf], [<math.h>], |
| [float f; isinf(f);]) |
| if test "$ac_cv_func_isinf_in_math_h" = "yes" ; then |
| AC_DEFINE([HAVE_ISINF_IN_MATH_H], [1], |
| [Set to 1 if the isinf function is found in <math.h>]) |
| fi |
| |
| AC_SINGLE_CXX_CHECK([ac_cv_func_isinf_in_cmath], |
| [isinf], [<cmath>], |
| [float f; isinf(f);]) |
| if test "$ac_cv_func_isinf_in_cmath" = "yes" ; then |
| AC_DEFINE([HAVE_ISINF_IN_CMATH], [1], |
| [Set to 1 if the isinf function is found in <cmath>]) |
| fi |
| |
| AC_SINGLE_CXX_CHECK([ac_cv_func_std_isinf_in_cmath], |
| [std::isinf], [<cmath>], |
| [float f; std::isinf(f);]) |
| if test "$ac_cv_func_std_isinf_in_cmath" = "yes" ; then |
| AC_DEFINE([HAVE_STD_ISINF_IN_CMATH], [1], |
| [Set to 1 if the std::isinf function is found in <cmath>]) |
| fi |
| |
| AC_SINGLE_CXX_CHECK([ac_cv_func_finite_in_ieeefp_h], |
| [finite], [<ieeefp.h>], |
| [float f; finite(f);]) |
| if test "$ac_cv_func_finite_in_ieeefp_h" = "yes" ; then |
| AC_DEFINE([HAVE_FINITE_IN_IEEEFP_H], [1], |
| [Set to 1 if the finite function is found in <ieeefp.h>]) |
| fi |
| |
| ]) |
| |
| |
