view libquadmath/math/isnanq.c @ 76:6381ea127240

call argument iterator fix
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Tue, 20 Sep 2011 16:58:47 +0900
parents 561a7518be6b
children 04ced10e8804
line wrap: on
line source

/* s_isnanl.c -- long double version of s_isnan.c.
 * Conversion to long double by Jakub Jelinek, jj@ultra.linux.cz.
 */

/*
 * ====================================================
 * 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.
 * ====================================================
 */

#include "quadmath-imp.h"

int
isnanq (const __float128 x)
{
  int64_t hx,lx;
  GET_FLT128_WORDS64(hx,lx,x);
  hx &= 0x7fffffffffffffffLL;
  hx |= (uint64_t)(lx|(-lx))>>63;
  hx = 0x7fff000000000000LL - hx;
  return (int)((uint64_t)hx>>63);
}