newlib-cygwin/newlib/libm/common/sf_nan.c

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/*
* nanf () returns a nan.
* Added by Cygnus Support.
*/
#include "fdlibm.h"
float nanf(const char *unused)
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{
float x;
#if __GNUC_PREREQ (3, 3)
x = __builtin_nanf("");
#else
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SET_FLOAT_WORD(x,0x7fc00000);
#endif
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return x;
}
#ifdef _DOUBLE_IS_32BITS
double nan(const char *arg)
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{
return (double) nanf(arg);
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}
#endif /* defined(_DOUBLE_IS_32BITS) */