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/*
* ====================================================
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
*
* Developed at SunPro, a Sun Microsystems, Inc. business.
* Permission to use, copy, modify, and distribute this
* software is freely granted, provided that this notice
* is preserved.
* ====================================================
*/
/*
* finite(x) returns 1 is x is finite, else 0;
* no branching!
*/
#include <math.h>
#include <math_private.h>
#include <ldbl-classify-compat.h>
#include <shlib-compat.h>
#include <stdint.h>
int
__finite (double x)
{
int64_t lx;
EXTRACT_WORDS64 (lx,x);
return (int)((uint64_t)((lx & INT64_C(0x7ff0000000000000))
- INT64_C (0x7ff0000000000000)) >> 63);
}
hidden_def (__finite)
weak_alias (__finite, finite)
#ifdef NO_LONG_DOUBLE
# if LDBL_CLASSIFY_COMPAT
# if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_23)
compat_symbol (libc, __finite, __finitel, GLIBC_2_0);
# endif
# if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_23)
compat_symbol (libm, __finite, __finitel, GLIBC_2_1);
# endif
# endif
weak_alias (__finite, finitel)
#endif
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