dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_CACHE_CHECK([whether NAN macro works], [gl_cv_header_math_nan_works],
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <math.h>]],
AC_CACHE_CHECK([whether NAN macro works], [gl_cv_header_math_nan_works],
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <math.h>]],