/* @(#)s_finite.c 5.1 93/09/24 */

/*

 * ====================================================

 * 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.

 * ====================================================

 */

#if defined(LIBM_SCCS) && !defined(lint)

static char rcsid[] = "$NetBSD: s_finite.c,v 1.8 1995/05/10 20:47:17 jtc Exp $";

#endif

/*

 * 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>

#undef __finite

#ifndef FINITE

# define FINITE __finite

#endif

int FINITE(double x)

{

  int32_t hx;

  GET_HIGH_WORD (hx, x);

  return (int) ((uint32_t) ((hx & 0x7ff00000) - 0x7ff00000) >> 31);

}

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