frexpl: Update autoconf test.

[gnulib.git] / m4 / frexpl.m4

diff --git a/m4/frexpl.m4 b/m4/frexpl.m4
index 6456a02..5843fa2 100644 (file)
--- a/m4/frexpl.m4
+++ b/m4/frexpl.m4
@@ -1,5 +1,5 @@
-# frexpl.m4 serial 13
-dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
+# frexpl.m4 serial 16
+dnl Copyright (C) 2007-2011 Free Software Foundation, Inc.
 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.
@@ -50,9 +50,6 @@ AC_DEFUN([gl_FUNC_FREXPL],
         [Define if the frexpl() function is available.])
     fi
   fi
-  if test $HAVE_DECL_FREXPL = 0 || test $gl_func_frexpl = no; then
-    AC_LIBOBJ([frexpl])
-  fi
   AC_SUBST([FREXPL_LIBM])
 ])
 
@@ -80,9 +77,6 @@ AC_DEFUN([gl_FUNC_FREXPL_NO_LIBM],
         [Define if the frexpl() function is available in libc.])
     fi
   fi
-  if test $HAVE_DECL_FREXPL = 0 || test $gl_func_frexpl_no_libm = no; then
-    AC_LIBOBJ([frexpl])
-  fi
 ])
 
 dnl Test whether frexpl() can be used without linking with libm.
@@ -121,7 +115,25 @@ AC_DEFUN([gl_FUNC_FREXPL_WORKS],
 # undef LDBL_MIN_EXP
 # define LDBL_MIN_EXP    (-16381)
 #endif
-extern long double frexpl (long double, int *);
+#if defined __i386__ && defined __FreeBSD__
+# undef LDBL_MIN_EXP
+# define LDBL_MIN_EXP    (-16381)
+#endif
+#if (defined _ARCH_PPC || defined _POWER) && defined _AIX && (LDBL_MANT_DIG == 106) && defined __GNUC__
+# undef LDBL_MIN_EXP
+# define LDBL_MIN_EXP DBL_MIN_EXP
+#endif
+#if defined __sgi && (LDBL_MANT_DIG >= 106)
+# if defined __GNUC__
+#  undef LDBL_MIN_EXP
+#  define LDBL_MIN_EXP DBL_MIN_EXP
+# endif
+#endif
+extern
+#ifdef __cplusplus
+"C"
+#endif
+long double frexpl (long double, int *);
 int main()
 {
   int result = 0;