ceilf-ieee: Work around bug on AIX 7.1.

[gnulib.git] / m4 / ceilf.m4

diff --git a/m4/ceilf.m4 b/m4/ceilf.m4
index 9161a51..66bac69 100644 (file)
--- a/m4/ceilf.m4
+++ b/m4/ceilf.m4
@@ -1,4 +1,4 @@
-# ceilf.m4 serial 9
+# ceilf.m4 serial 10
 dnl Copyright (C) 2007, 2009-2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -37,10 +37,14 @@ AC_DEFUN([gl_FUNC_CEILF],
 ]gl_FLOAT_SIGNBIT_CODE[
 int main()
 {
+  int result = 0;
   /* Test whether ceilf (-0.0f) is -0.0f.  */
   if (signbitf (minus_zerof) && !signbitf (ceilf (minus_zerof)))
-    return 1;
-  return 0;
+    result |= 1;
+  /* Test whether ceilf (-0.3f) is -0.0f.  */
+  if (signbitf (-0.3f) && !signbitf (ceilf (-0.3f)))
+    result |= 2;
+  return result;
 }
               ]])],
               [gl_cv_func_ceilf_ieee=yes],