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1#
2# This function determins if the the isinf function isavailable on this
3# platform.
4#
5AC_DEFUN([AC_FUNC_ISINF],[
6AC_SINGLE_CXX_CHECK([ac_cv_func_isinf_in_math_h],
7                    [isinf], [<math.h>],
8                    [float f; isinf(f);])
9if test "$ac_cv_func_isinf_in_math_h" = "yes" ; then
10  AC_DEFINE([HAVE_ISINF_IN_MATH_H],1,[Set to 1 if the isinf function is found in <math.h>])
11fi
12
13AC_SINGLE_CXX_CHECK([ac_cv_func_isinf_in_cmath],
14                    [isinf], [<cmath>],
15                    [float f; isinf(f);])
16if test "$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>])
18fi
19
20AC_SINGLE_CXX_CHECK([ac_cv_func_std_isinf_in_cmath],
21                    [std::isinf], [<cmath>],
22                    [float f; std::isinf(f)}])
23if test "$ac_cv_func_std_isinf_in_cmath" = "yes" ; then
24  AC_DEFINE([HAVE_STD_ISINF_IN_CMATH],1,[Set to 1 if the std::isinf function is found in <cmath>])
25fi
26
27AC_SINGLE_CXX_CHECK([ac_cv_func_finite_in_ieeefp_h],
28                    [finite], [<ieeefp.h>],
29                    [float f; finite(f);])
30if test "$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>])
32fi
33
34])
35
36
37