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-rw-r--r--gcc/testsuite/gcc.dg/fnegate-1.c113
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diff --git a/gcc/testsuite/gcc.dg/fnegate-1.c b/gcc/testsuite/gcc.dg/fnegate-1.c
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+/* 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;
+}
+