-# printf-frexpl.m4 serial 1
+# printf-frexpl.m4 serial 2
dnl Copyright (C) 2007 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
if test $gl_cv_func_frexpl_no_libm = yes; then
AC_DEFINE([HAVE_FREXPL_IN_LIBC], 1,
[Define if the frexpl function is available in libc.])
+ dnl Also check whether it's declared. glibc (2.3..2.5 at least) and
+ dnl MacOS X 10.3 have frexpl() in libc but don't declare it in <math.h>.
+ AC_CHECK_DECLS([frexpl])
fi
AC_CACHE_CHECK([whether ldexpl can be used without linking with libm],
if test $gl_cv_func_ldexpl_no_libm = yes; then
AC_DEFINE([HAVE_LDEXPL_IN_LIBC], 1,
[Define if the ldexpl function is available in libc.])
+ dnl Also check whether it's declared. glibc (2.3..2.5 at least) and
+ dnl MacOS X 10.3 have ldexpl() in libc but don't declare it in <math.h>.
+ AC_CHECK_DECLS([ldexpl])
fi
fi
])