2 # This function determins if the the isinf function isavailable on this
5 AC_DEFUN([AC_FUNC_ISINF],[
6 AC_SINGLE_CXX_CHECK([ac_cv_func_isinf_in_math_h],
9 if test "$ac_cv_func_isinf_in_math_h" = "yes" ; then
10 AC_DEFINE([HAVE_ISINF_IN_MATH_H],1,[Set to 1 if the isinf function is found in <math.h>])
13 AC_SINGLE_CXX_CHECK([ac_cv_func_isinf_in_cmath],
16 if test "$ac_cv_func_isinf_in_cmath" = "yes" ; then
17 AC_DEFINE([HAVE_ISINF_IN_CMATH],1,[Set to 1 if the isinf function is found in <cmath>])
20 AC_SINGLE_CXX_CHECK([ac_cv_func_std_isinf_in_cmath],
21 [std::isinf], [<cmath>],
22 [float f; std::isinf(f)}])
23 if test "$ac_cv_func_std_isinf_in_cmath" = "yes" ; then
24 AC_DEFINE([HAVE_STD_ISINF_IN_CMATH],1,[Set to 1 if the std::isinf function is found in <cmath>])
27 AC_SINGLE_CXX_CHECK([ac_cv_func_finite_in_ieeefp_h],
28 [finite], [<ieeefp.h>],
29 [float f; finite(f);])
30 if test "$ac_cv_func_finite_in_ieeefp_h" = "yes" ; then
31 AC_DEFINE([HAVE_FINITE_IN_IEEEFP_H],1,[Set to 1 if the finite function is found in <ieeefp.h>])