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annotate libquadmath/math/isnanq.c @ 68:561a7518be6b

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update gcc-4.6
author Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
date Sun, 21 Aug 2011 07:07:55 +0900
parents
children 04ced10e8804
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rev   line source
68
561a7518be6b update gcc-4.6
Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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1 /* s_isnanl.c -- long double version of s_isnan.c.
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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2 * Conversion to long double by Jakub Jelinek, jj@ultra.linux.cz.
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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3 */
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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4
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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5 /*
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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6 * ====================================================
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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7 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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8 *
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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9 * Developed at SunPro, a Sun Microsystems, Inc. business.
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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10 * Permission to use, copy, modify, and distribute this
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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11 * software is freely granted, provided that this notice
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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12 * is preserved.
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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13 * ====================================================
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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14 */
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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15
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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16 #include "quadmath-imp.h"
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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17
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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18 int
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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19 isnanq (const __float128 x)
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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20 {
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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21 int64_t hx,lx;
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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22 GET_FLT128_WORDS64(hx,lx,x);
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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23 hx &= 0x7fffffffffffffffLL;
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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24 hx |= (uint64_t)(lx|(-lx))>>63;
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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25 hx = 0x7fff000000000000LL - hx;
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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26 return (int)((uint64_t)hx>>63);
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Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
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27 }