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https://github.com/jart/cosmopolitan.git
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Justine Tunney
fdc3fa9148
The libm code from musl wasn't being used since most of these functions are implemented using x87 which goes faster than a library intended for risc machines.
36 lines
2.3 KiB
C
36 lines
2.3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/math.h"
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/**
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* Returns minimum of two long doubles.
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*
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* If one argument is NAN then the other is returned.
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* This function is designed to do the right thing with
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* signed zeroes.
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*/
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long double fminl(long double x, long double y) {
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if (__builtin_isnan(x)) return y;
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if (__builtin_isnan(y)) return x;
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if (__builtin_signbitl(x) != __builtin_signbitl(y)) {
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return __builtin_signbitl(x) ? x : y; /* C99 Annex F.9.9.2 */
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}
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return x < y ? x : y;
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}
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