| # | |
| # This function determins if the the HUGE_VAL macro is compilable with the | |
| # -pedantic switch or not. XCode < 2.4.1 doesn't get it right. | |
| # | |
| AC_DEFUN([AC_HUGE_VAL_CHECK],[ | |
| AC_CACHE_CHECK([for HUGE_VAL sanity], [ac_cv_huge_val_sanity],[ | |
| AC_LANG_PUSH([C++]) | |
| ac_save_CXXFLAGS=$CXXFLAGS | |
| CXXFLAGS=-pedantic | |
| AC_RUN_IFELSE( | |
| AC_LANG_PROGRAM( | |
| [#include <math.h>], | |
| [double x = HUGE_VAL; return x != x; ]), | |
| [ac_cv_huge_val_sanity=yes],[ac_cv_huge_val_sanity=no], | |
| [ac_cv_huge_val_sanity=yes]) | |
| CXXFLAGS=$ac_save_CXXFLAGS | |
| AC_LANG_POP([C++]) | |
| ]) | |
| AC_SUBST(HUGE_VAL_SANITY,$ac_cv_huge_val_sanity) | |
| ]) |