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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 run } */
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9 /* { dg-options "-O2" } */
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10
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11 extern void abort(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 test (double x)
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18 {
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19 return signbit(x);
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20 }
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21
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22 int testf (float x)
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23 {
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24 return signbitf(x);
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25 }
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26
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27 int testl (long double x)
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28 {
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29 return signbitl(x);
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30 }
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31
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32
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33 int main()
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34 {
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35 if (test (0.0) != 0)
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36 abort ();
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37 if (test (1.0) != 0)
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38 abort ();
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39 if (test (-2.0) == 0)
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40 abort ();
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41
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42 if (testf (0.0f) != 0)
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43 abort ();
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44 if (testf (1.0f) != 0)
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45 abort ();
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46 if (testf (-2.0f) == 0)
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47 abort ();
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48
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49 if (testl (0.0l) != 0)
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50 abort ();
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51 if (testl (1.0l) != 0)
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52 abort ();
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53 if (testl (-2.0l) == 0)
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54 abort ();
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55
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56 return 0;
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57 }
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58
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