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2fc507c98f
* modelines: tw -> sw shiftwidth, not textwidth. * space-surround modelines * fix irregular modelines * Fix modeline in titlegen.c
57 lines
3.3 KiB
C
57 lines
3.3 KiB
C
/*-*- mode:c;indent-tabs-mode:t;c-basic-offset:8;tab-width:8;coding:utf-8 -*-│
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│ vi: set noet ft=c ts=8 sw=8 fenc=utf-8 :vi │
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╚──────────────────────────────────────────────────────────────────────────────╝
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│ │
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│ The author of this software is David M. Gay. │
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│ Please send bug reports to David M. Gay <dmg@acm.org> │
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│ or Justine Tunney <jtunney@gmail.com> │
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│ │
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│ Copyright (C) 1998, 1999 by Lucent Technologies │
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│ All Rights Reserved │
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│ │
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│ Permission to use, copy, modify, and distribute this software and │
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│ its documentation for any purpose and without fee is hereby │
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│ granted, provided that the above copyright notice appear in all │
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│ copies and that both that the copyright notice and this │
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│ permission notice and warranty disclaimer appear in supporting │
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│ documentation, and that the name of Lucent or any of its entities │
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│ not be used in advertising or publicity pertaining to │
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│ distribution of the software without specific, written prior │
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│ permission. │
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│ │
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│ LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, │
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│ INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. │
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│ IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY │
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│ SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES │
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│ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER │
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│ IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, │
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│ ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF │
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│ THIS SOFTWARE. │
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│ │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "third_party/gdtoa/gdtoa.internal.h"
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double
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__gdtoa_ulp(U *x)
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{
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Long L;
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U a;
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L = (word0(x) & Exp_mask) - (P-1)*Exp_msk1;
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if (L > 0) {
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word0(&a) = L;
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word1(&a) = 0;
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}
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else {
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L = -L >> Exp_shift;
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if (L < Exp_shift) {
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word0(&a) = 0x80000 >> L;
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word1(&a) = 0;
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}
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else {
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word0(&a) = 0;
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L -= Exp_shift;
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word1(&a) = L >= 31 ? 1 : 1 << (31 - L);
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}
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}
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return dval(&a);
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}
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