33 lines
765 B
C
33 lines
765 B
C
/* Test NAN macro. */
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/* { dg-do run } */
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/* { dg-options "-std=c2x -pedantic-errors" } */
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/* { dg-add-options ieee } */
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#include <float.h>
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/* This should be defined if and only if quiet NaNs are supported for
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type float. If the testsuite gains effective-target support for
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targets not supporting NaNs, or not supporting them for all types,
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this test should be split into versions for targets with and
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without NaNs for float. */
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#ifndef NAN
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#error "NAN undefined"
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#endif
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volatile float f = NAN;
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extern void abort (void);
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extern void exit (int);
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int
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main (void)
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{
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(void) _Generic (NAN, float : 0);
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if (!__builtin_isnan (NAN))
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abort ();
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if (!__builtin_isnan (f))
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abort ();
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if (!__builtin_isnan (f + f))
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abort ();
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exit (0);
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}
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