2006-11-03 18:04:08 +00:00
|
|
|
#
|
|
|
|
|
# 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],[
|
2006-11-03 19:49:16 +00:00
|
|
|
AC_LANG_PUSH([C++])
|
|
|
|
|
CXXFLAGS=-pedantic
|
2006-11-03 18:04:08 +00:00
|
|
|
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])
|
2006-11-03 19:49:16 +00:00
|
|
|
AC_LANG_POP([C++])
|
2006-11-03 18:04:08 +00:00
|
|
|
])
|
|
|
|
|
AC_SUBST(HUGE_VAL_SANITY,$ac_cv_huge_val_sanity)
|
|
|
|
|
])
|
