obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 113 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/fnegate-1.c b/gcc/testsuite/gcc.dg/fnegate-1.c
new file mode 100644
index 000000000..ad0f4e09f
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/fnegate-1.c
@@ -0,0 +1,113 @@
+/* Copyright (C) 2002 Free Software Foundation.
+  
+   Test floating point negation produces the expected results.
+  
+   Written by Roger Sayle, 21st May 2002.  */
+
+/* { dg-do run } */
+/* { dg-options "-O2 -ffast-math" } */
+
+extern void abort ();
+
+
+double
+dneg (double x)
+{
+  return -x;
+}
+
+double
+dmult (double x)
+{
+  return -1.0 * x;
+}
+
+double
+ddiv (double x)
+{
+  return x / -1.0;
+}
+
+
+float
+fneg (float x)
+{
+  return -x;
+}
+
+float
+fmult (float x)
+{
+  return -1.0f * x;
+}
+
+float
+fdiv (float x)
+{
+  return x / -1.0f;
+}
+
+
+void
+ftest(float src, float dst)
+{
+  if (fneg (src) != dst)
+    abort ();
+
+  if (src != fneg (dst))
+    abort ();
+
+  if (fmult (src) != dst)
+    abort ();
+
+  if (src != fmult (dst))
+    abort ();
+
+  if (fdiv (src) != dst)
+    abort ();
+
+  if (src != fdiv(dst))
+    abort ();
+}
+
+void
+dtest(double src, double dst)
+{
+  if (dneg (src) != dst)
+    abort ();
+
+  if (src != dneg (dst))
+    abort ();
+
+  if (dmult (src) != dst)
+    abort ();
+
+  if (src != dmult (dst))
+    abort ();
+
+  if (ddiv (src) != dst)
+    abort ();
+
+  if (src != ddiv(dst))
+    abort ();
+}
+
+
+int
+main ()
+{
+  ftest (1.0f, -1.0f);
+  ftest (2.0f, -2.0f);
+  ftest (-3.0f, 3.0f);
+  ftest (0.0f, -0.0f);
+  ftest (-0.0f, 0.0f);
+
+  dtest (1.0, -1.0);
+  dtest (2.0, -2.0);
+  dtest (-3.0, 3.0);
+  dtest (0.0, -0.0);
+  dtest (-0.0, 0.0);
+
+  return 0;
+}
+