114 lines
1.3 KiB
C
114 lines
1.3 KiB
C
/* Copyright (C) 2002 Free Software Foundation.
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Test floating point negation produces the expected results.
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Written by Roger Sayle, 21st May 2002. */
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/* { dg-do run } */
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/* { dg-options "-O2 -ffast-math" } */
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extern void abort ();
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double
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dneg (double x)
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{
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return -x;
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}
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double
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dmult (double x)
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{
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return -1.0 * x;
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}
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double
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ddiv (double x)
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{
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return x / -1.0;
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}
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float
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fneg (float x)
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{
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return -x;
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}
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float
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fmult (float x)
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{
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return -1.0f * x;
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}
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float
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fdiv (float x)
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{
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return x / -1.0f;
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}
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void
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ftest(float src, float dst)
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{
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if (fneg (src) != dst)
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abort ();
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if (src != fneg (dst))
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abort ();
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if (fmult (src) != dst)
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abort ();
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if (src != fmult (dst))
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abort ();
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if (fdiv (src) != dst)
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abort ();
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if (src != fdiv(dst))
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abort ();
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}
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void
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dtest(double src, double dst)
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{
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if (dneg (src) != dst)
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abort ();
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if (src != dneg (dst))
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abort ();
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if (dmult (src) != dst)
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abort ();
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if (src != dmult (dst))
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abort ();
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if (ddiv (src) != dst)
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abort ();
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if (src != ddiv(dst))
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abort ();
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}
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int
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main ()
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{
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ftest (1.0f, -1.0f);
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ftest (2.0f, -2.0f);
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ftest (-3.0f, 3.0f);
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ftest (0.0f, -0.0f);
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ftest (-0.0f, 0.0f);
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dtest (1.0, -1.0);
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dtest (2.0, -2.0);
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dtest (-3.0, 3.0);
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dtest (0.0, -0.0);
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dtest (-0.0, 0.0);
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return 0;
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}
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