vasilito
ff4ff35918
Red Bear OS is a full fork. All sources must be available from git clone with zero network access. Removed gitignore rules that excluded fetched source trees under recipes/*/source/, local/recipes/kde/*/source/, local/recipes/qt/*/source/, and vendor source trees. Build artifacts (target/, build/, source.tar, *.o, *.so) remain excluded. 127291 files added — kernel, relibc, base, bootloader, pkgar, all KDE/Qt frameworks, mesa, wayland, DRM drivers, and every other recipe source.
93 lines
2.4 KiB
C
93 lines
2.4 KiB
C
/* NaNs and Infinity in floating-point numbers.
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Copyright (C) 2015-2023 Free Software Foundation, Inc.
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This file was written by Daiki Ueno <ueno@gnu.org>, 2015.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Replacement 'trionan.c', using Gnulib functions. */
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#include "config.h"
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#include <float.h>
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#include <math.h>
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/* Copied from gnulib/tests/infinity.h. */
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/* Infinityd () returns a 'double' +Infinity. */
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/* The Microsoft MSVC 9 compiler chokes on the expression 1.0 / 0.0. */
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#if defined _MSC_VER
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static double
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Infinityd ()
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{
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static double zero = 0.0;
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return 1.0 / zero;
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}
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#else
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# define Infinityd() (1.0 / 0.0)
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#endif
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/* Copied from gnulib/tests/nan.h. */
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/* NaNd () returns a 'double' not-a-number. */
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/* The Compaq (ex-DEC) C 6.4 compiler and the Microsoft MSVC 9 compiler choke
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on the expression 0.0 / 0.0. */
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#if defined __DECC || defined _MSC_VER
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static double
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NaNd ()
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{
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static double zero = 0.0;
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return zero / zero;
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}
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#else
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# define NaNd() (0.0 / 0.0)
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#endif
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/* Copied from gnulib/tests/minus-zero.h. */
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/* minus_zerod represents the value -0.0. */
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/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0.
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ICC 10.0 has a bug when optimizing the expression -zero.
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The expression -DBL_MIN * DBL_MIN does not work when cross-compiling
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to PowerPC on Mac OS X 10.5. */
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#if defined __hpux || defined __sgi || defined __ICC
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_GL_ATTRIBUTE_MAYBE_UNUSED
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static double
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compute_minus_zerod (void)
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{
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return -DBL_MIN * DBL_MIN;
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}
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# define minus_zerod compute_minus_zerod ()
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#else
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_GL_ATTRIBUTE_MAYBE_UNUSED
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static double minus_zerod = -0.0;
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#endif
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#undef INFINITY
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#undef NAN
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#define INFINITY Infinityd()
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#define NAN NaNd()
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#define trio_pinf() INFINITY
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#define trio_ninf() -INFINITY
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#define trio_nan() NAN
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#define trio_nzero() minus_zerod
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#define trio_isnan(x) isnan(x)
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#define trio_isinf(x) isinf(x)
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#define trio_signbit(x) signbit(x)
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