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],
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[std::isinf], [<cmath>],
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[float f; std::isinf(f)}])
23
if test "$ac_cv_func_std_isinf_in_cmath" = "yes" ; then
24
AC_DEFINE([HAVE_STD_ISINF_IN_CMATH],1,[Set to 1 if the std::isinf function is found in <cmath>])
27
AC_SINGLE_CXX_CHECK([ac_cv_func_finite_in_ieeefp_h],
28
[finite], [<ieeefp.h>],
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[float f; finite(f);])
30
if test "$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>])