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41 lines
2.8 KiB
C
41 lines
2.8 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.h"
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#include "libc/testlib/testlib.h"
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#include "libc/x/x.h"
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TEST(cbrt, test) {
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EXPECT_STREQ("0", gc(xasprintf("%.15g", cbrt(0.))));
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EXPECT_STREQ("-0", gc(xasprintf("%.15g", cbrt(-0.))));
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EXPECT_STREQ("0.7937005259841", gc(xasprintf("%.15g", cbrt(.5))));
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EXPECT_STREQ("-0.7937005259841", gc(xasprintf("%.15g", cbrt(-.5))));
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EXPECT_STREQ("1", gc(xasprintf("%.15g", cbrt(1.))));
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EXPECT_STREQ("-1", gc(xasprintf("%.15g", cbrt(-1.))));
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EXPECT_STREQ("1.14471424255333", gc(xasprintf("%.15g", cbrt(1.5))));
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EXPECT_STREQ("-1.14471424255333", gc(xasprintf("%.15g", cbrt(-1.5))));
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EXPECT_STREQ("nan", gc(xasprintf("%.15g", cbrt(NAN))));
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EXPECT_STREQ("-nan", gc(xasprintf("%.15g", cbrt(-NAN))));
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EXPECT_STREQ("inf", gc(xasprintf("%.15g", cbrt(INFINITY))));
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EXPECT_STREQ("-inf", gc(xasprintf("%.15g", cbrt(-INFINITY))));
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EXPECT_STREQ("2.81264428523626e-103",
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gc(xasprintf("%.15g", cbrt(__DBL_MIN__))));
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EXPECT_STREQ("5.64380309412236e+102",
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gc(xasprintf("%.15g", cbrt(__DBL_MAX__))));
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}
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