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72 lines
4.1 KiB
C
72 lines
4.1 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 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/testlib.h"
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#include "libc/x/x.h"
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#include "libc/x/xasprintf.h"
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double _tanh(double) asm("tanh");
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float _tanhf(float) asm("tanhf");
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long double _tanhl(long double) asm("tanhl");
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TEST(_tanhl, test) {
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EXPECT_STREQ(".09966799462495582", _gc(xdtoal(_tanhl(+.1))));
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EXPECT_STREQ("-.09966799462495582", _gc(xdtoal(_tanhl(-.1))));
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EXPECT_STREQ("0", _gc(xdtoal(_tanhl(0))));
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EXPECT_STREQ("-0", _gc(xdtoal(_tanhl(-0.))));
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EXPECT_TRUE(isnan(_tanhl(NAN)));
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EXPECT_STREQ("1", _gc(xdtoal(_tanhl(INFINITY))));
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EXPECT_STREQ("-1", _gc(xdtoal(_tanhl(-INFINITY))));
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}
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TEST(_tanh, test) {
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EXPECT_STREQ("0", _gc(xasprintf("%.15g", _tanh(0.))));
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EXPECT_STREQ("-0", _gc(xasprintf("%.15g", _tanh(-0.))));
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EXPECT_STREQ("0.0996679946249558", _gc(xasprintf("%.15g", _tanh(.1))));
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EXPECT_STREQ("-0.0996679946249558", _gc(xasprintf("%.15g", _tanh(-.1))));
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EXPECT_STREQ("0.46211715726001", _gc(xasprintf("%.15g", _tanh(.5))));
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EXPECT_STREQ("-0.46211715726001", _gc(xasprintf("%.15g", _tanh(-.5))));
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EXPECT_STREQ("0.761594155955765", _gc(xasprintf("%.15g", _tanh(1.))));
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EXPECT_STREQ("-0.761594155955765", _gc(xasprintf("%.15g", _tanh(-1.))));
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EXPECT_STREQ("0.905148253644866", _gc(xasprintf("%.15g", _tanh(1.5))));
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EXPECT_STREQ("-0.905148253644866", _gc(xasprintf("%.15g", _tanh(-1.5))));
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EXPECT_STREQ("0.964027580075817", _gc(xasprintf("%.15g", _tanh(2.))));
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EXPECT_TRUE(isnan(_tanh(NAN)));
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EXPECT_TRUE(isnan(_tanh(-NAN)));
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EXPECT_STREQ("1", _gc(xasprintf("%.15g", _tanh(INFINITY))));
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EXPECT_STREQ("-1", _gc(xasprintf("%.15g", _tanh(-INFINITY))));
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EXPECT_STREQ("2.2250738585072e-308",
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_gc(xasprintf("%.15g", _tanh(__DBL_MIN__))));
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EXPECT_STREQ("1", _gc(xasprintf("%.15g", _tanh(__DBL_MAX__))));
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EXPECT_STREQ("-0.761594155955765",
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_gc(xasprintf("%.15g", _tanh(-1.0000000000000002))));
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EXPECT_STREQ("-2.1073424255447e-08",
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_gc(xasprintf("%.15g", _tanh(-2.1073424255447e-08))));
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}
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TEST(_tanhf, test) {
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EXPECT_STREQ(".099668", _gc(xdtoaf(_tanhf(+.1))));
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EXPECT_STREQ("-.099668", _gc(xdtoaf(_tanhf(-.1))));
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EXPECT_STREQ("0", _gc(xdtoaf(_tanhf(0))));
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EXPECT_STREQ("-0", _gc(xdtoaf(_tanhf(-0.))));
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EXPECT_TRUE(isnan(_tanhf(NAN)));
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EXPECT_STREQ("1", _gc(xdtoaf(_tanhf(INFINITY))));
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EXPECT_STREQ("-1", _gc(xdtoaf(_tanhf(-INFINITY))));
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}
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