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1 /* Copyright (C) 2003, 2006 Free Software Foundation.
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2
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3 Verify that built-in math function constant folding of functions
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4 with one constant argument is correctly performed by the compiler.
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5
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6 Written by Roger Sayle, 30th March 2003. */
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7
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8 /* { dg-do run } */
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9 /* { dg-options "-O2 -ffast-math" } */
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10
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11 extern void abort(void);
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12 extern double pow(double, double);
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13 extern double sqrt(double);
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14 extern double cbrt(double);
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15
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16 void test(double x)
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17 {
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18 if (pow(x,-1.0) != 1.0/x)
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19 abort ();
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20
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21 if (pow(x,2.0) != x*x)
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22 abort ();
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23
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24 if (pow(x,-2.0) != 1.0/(x*x))
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25 abort ();
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26
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27 if (pow(x,0.5) != sqrt(x))
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28 abort ();
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29
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30 #ifdef HAVE_C99_RUNTIME
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31 if (pow(x,1.0/3.0) != cbrt(x))
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32 abort ();
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33 #endif
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34 }
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35
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36 int main()
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37 {
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38 test (1.0);
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39 test (2.0);
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40 return 0;
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41 }
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42
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