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e16a7d8f3b
`et` means `expandtab`. ```sh rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\) :vi/vi: \1 xoet\2:vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2 :vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/' ```
56 lines
3.4 KiB
C
56 lines
3.4 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2021 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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#include "libc/mem/gc.h"
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#include "libc/testlib/ezbench.h"
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#include "libc/testlib/testlib.h"
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#include "libc/x/xasprintf.h"
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double _cos(double) asm("cos");
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float _cosf(float) asm("cosf");
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long double _cosl(long double) asm("cosl");
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TEST(cos, test) {
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EXPECT_STREQ("1", _gc(xasprintf("%.15g", _cos(0.))));
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EXPECT_STREQ("1", _gc(xasprintf("%.15g", _cos(-0.))));
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EXPECT_STREQ("0.995004165278026", _gc(xasprintf("%.15g", _cos(.1))));
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EXPECT_STREQ("0.995004165278026", _gc(xasprintf("%.15g", _cos(-.1))));
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EXPECT_STREQ("0.877582561890373", _gc(xasprintf("%.15g", _cos(.5))));
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EXPECT_STREQ("0.877582561890373", _gc(xasprintf("%.15g", _cos(-.5))));
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EXPECT_STREQ("0.54030230586814", _gc(xasprintf("%.15g", _cos(1.))));
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EXPECT_STREQ("0.54030230586814", _gc(xasprintf("%.15g", _cos(-1.))));
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EXPECT_STREQ("0.0707372016677029", _gc(xasprintf("%.15g", _cos(1.5))));
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EXPECT_STREQ("0.0707372016677029", _gc(xasprintf("%.15g", _cos(-1.5))));
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EXPECT_STREQ("-0.416146836547142", _gc(xasprintf("%.15g", _cos(2.))));
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EXPECT_TRUE(isnan(_cos(NAN)));
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EXPECT_TRUE(isnan(_cos(-NAN)));
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EXPECT_TRUE(isnan(_cos(INFINITY)));
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EXPECT_TRUE(isnan(_cos(-INFINITY)));
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EXPECT_STREQ("1", _gc(xasprintf("%.15g", _cos(__DBL_MIN__))));
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EXPECT_STREQ("-0.99998768942656", _gc(xasprintf("%.15g", _cos(__DBL_MAX__))));
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EXPECT_STREQ("0.54030230586814",
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_gc(xasprintf("%.15g", _cos(-1.0000000000000002))));
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EXPECT_STREQ("1", _gc(xasprintf("%.15g", _cos(-2.1073424255447e-08))));
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}
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BENCH(cos, bench) {
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EZBENCH2("cos", donothing, _cos(.7)); // ~6ns
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EZBENCH2("cosf", donothing, _cosf(.7)); // ~5ns
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EZBENCH2("cosl", donothing, _cosl(.7)); // ~25ns
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}
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