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1 /* Copyright (C) 2004 Free Software Foundation.
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2
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3 Check that constant folding of signbit, signbitf and signbitl math
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4 functions doesn't break anything and produces the expected results.
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5
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6 Written by Roger Sayle, 28th January 2004. */
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7
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8 /* { dg-do link } */
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9 /* { dg-options "-O2" } */
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10
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11 extern void link_error(void);
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12
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13 extern int signbit(double);
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14 extern int signbitf(float);
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15 extern int signbitl(long double);
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16
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17 int main()
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18 {
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19 if (signbit (1.0) != 0)
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20 link_error ();
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21 if (signbit (-2.0) == 0)
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22 link_error ();
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23
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24 if (signbitf (1.0f) != 0)
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25 link_error ();
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26 if (signbitf (-2.0f) == 0)
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27 link_error ();
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28
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29 if (signbitl (1.0l) != 0)
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30 link_error ();
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31 if (signbitl (-2.0f) == 0)
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32 link_error ();
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33
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34 return 0;
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35 }
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36
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