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40 lines
2.9 KiB
C
40 lines
2.9 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/runtime/gc.internal.h"
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#include "libc/testlib/testlib.h"
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#include "libc/x/x.h"
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TEST(tan, test) {
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EXPECT_STREQ("0", gc(xasprintf("%.15g", tan(0.))));
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EXPECT_STREQ("-0", gc(xasprintf("%.15g", tan(-0.))));
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EXPECT_STREQ("0.54630248984379", gc(xasprintf("%.15g", tan(.5))));
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EXPECT_STREQ("-0.54630248984379", gc(xasprintf("%.15g", tan(-.5))));
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EXPECT_STREQ("1.5574077246549", gc(xasprintf("%.15g", tan(1.))));
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EXPECT_STREQ("-1.5574077246549", gc(xasprintf("%.15g", tan(-1.))));
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EXPECT_STREQ("14.1014199471717", gc(xasprintf("%.15g", tan(1.5))));
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EXPECT_STREQ("-14.1014199471717", gc(xasprintf("%.15g", tan(-1.5))));
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EXPECT_STREQ("nan", gc(xasprintf("%.15g", tan(NAN))));
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EXPECT_STREQ("-nan", gc(xasprintf("%.15g", tan(-NAN))));
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EXPECT_STREQ("-nan", gc(xasprintf("%.15g", tan(INFINITY))));
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EXPECT_STREQ("-nan", gc(xasprintf("%.15g", tan(-INFINITY))));
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EXPECT_STREQ("2.2250738585072e-308",
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gc(xasprintf("%.15g", tan(__DBL_MIN__))));
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EXPECT_STREQ("-0.0049620158744449", gc(xasprintf("%.15g", tan(__DBL_MAX__))));
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}
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