ceil-ieee tests: More tests.

[gnulib.git] / m4 / ceilf.m4

diff --git a/m4/ceilf.m4 b/m4/ceilf.m4
index 8b74a6d..6212d7f 100644 (file)
--- a/m4/ceilf.m4
+++ b/m4/ceilf.m4
@@ -1,5 +1,5 @@
-# ceilf.m4 serial 11
-dnl Copyright (C) 2007, 2009-2011 Free Software Foundation, Inc.
+# ceilf.m4 serial 13
+dnl Copyright (C) 2007, 2009-2012 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.
@@ -11,7 +11,7 @@ AC_DEFUN([gl_FUNC_CEILF],
   dnl Persuade glibc <math.h> to declare ceilf().
   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
   dnl Test whether ceilf() is declared.
-  AC_CHECK_DECLS([ceilf], , , [#include <math.h>])
+  AC_CHECK_DECLS([ceilf], , , [[#include <math.h>]])
   if test "$ac_cv_have_decl_ceilf" = yes; then
     dnl Test whether ceilf() can be used without libm.
     gl_FUNC_CEILF_LIBS
@@ -82,8 +82,9 @@ AC_DEFUN([gl_FUNC_CEILF_LIBS],
            # define __NO_MATH_INLINES 1 /* for glibc */
            #endif
            #include <math.h>
+           float (*funcptr) (float) = ceilf;
            float x;]],
-         [[x = ceilf(x);]])],
+         [[x = funcptr(x) + ceilf(x);]])],
       [gl_cv_func_ceilf_libm=])
     if test "$gl_cv_func_ceilf_libm" = "?"; then
       save_LIBS="$LIBS"
@@ -94,8 +95,9 @@ AC_DEFUN([gl_FUNC_CEILF_LIBS],
              # define __NO_MATH_INLINES 1 /* for glibc */
              #endif
              #include <math.h>
+             float (*funcptr) (float) = ceilf;
              float x;]],
-           [[x = ceilf(x);]])],
+           [[x = funcptr(x) + ceilf(x);]])],
         [gl_cv_func_ceilf_libm="-lm"])
       LIBS="$save_LIBS"
     fi