diff options
Diffstat (limited to 'autoconf/m4/func_isinf.m4')
| -rw-r--r-- | autoconf/m4/func_isinf.m4 | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/autoconf/m4/func_isinf.m4 b/autoconf/m4/func_isinf.m4 new file mode 100644 index 00000000000..22ba81d54d5 --- /dev/null +++ b/autoconf/m4/func_isinf.m4 @@ -0,0 +1,36 @@ +# +# This function determins if the isinf function isavailable on this +# platform. +# +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 + +]) + + |