2 # This function determins if the the isinf function isavailable on this
5 AC_DEFUN([AC_FUNC_ISINF],[
6 AC_SINGLE_CXX_CHECK([HAVE_ISINF_IN_MATH_H], [ac_cv_func_isinf_in_math_h],
9 int foo(float f) {return isinf(f);}])
10 AC_SINGLE_CXX_CHECK([HAVE_ISINF_IN_CMATH], [ac_cv_func_isinf_in_cmath],
13 int foo(float f) {return isinf(f);}])
14 AC_SINGLE_CXX_CHECK([HAVE_STD_ISINF_IN_CMATH], [ac_cv_func_std_isinf_in_cmath],
15 [std::isinf], [<cmath>],
17 using std::isinf; int foo(float f) {return isinf(f);}])
18 AC_SINGLE_CXX_CHECK([HAVE_FINITE_IN_IEEEFP_H], [ac_cv_func_finite_in_ieeefp_h],
19 [finite], [<ieeefp.h>],
21 int foo(float f) {return finite(f);}])