52 lines
2.9 KiB
C
52 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 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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#include "libc/testlib/testlib.h"
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long double x, y, z;
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COMBO(x, pos1) { x = +1.3L; }
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COMBO(x, pos2) { x = +2.3L; }
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COMBO(y, pos1) { y = +1.3L; }
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COMBO(y, pos2) { y = +2.3L; }
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COMBO(z, pi) { z = M_PI; }
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COMBO(z, e) { z = M_E; }
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TEST(powl, lolgebra) {
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/* EXPECT_LDBL_EQ(1, powl(x, 0)); */
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/* EXPECT_LDBL_EQ(x, powl(x, 1)); */
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/* EXPECT_LDBL_EQ(powl(x, -1), 1.0L / x); */
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/* EXPECT_LDBL_EQ(powl(x, 0.5), sqrtl(x)); */
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/* EXPECT_LDBL_EQ(powl(x, y) * powl(x, z), powl(x, y + z)); */
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/* EXPECT_LDBL_EQ(powl(x, y) * powl(z, y), powl(x * z, y)); */
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/* EXPECT_LDBL_EQ(powl(x, y) / x, powl(x, y - 1)); */
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/* EXPECT_LDBL_EQ(x / powl(y, z), x * powl(y, -z)); */
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/* EXPECT_LDBL_EQ(powi(x, 0), 1); */
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/* EXPECT_LDBL_EQ(powi(x, 1), x); */
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/* EXPECT_LDBL_EQ(powi(x, -1), 1 / x); */
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/* EXPECT_LDBL_EQ(powi(1, x), 1); */
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/* EXPECT_LDBL_EQ(powi(x, y) * powi(z, y), powi(x * z, y)); */
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}
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TEST(powl, testConstants) {
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EXPECT_LDBL_EQ(16, powl(2, 4));
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/* TODO(jart): We need a better AlmostEqual() */
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/* EXPECT_LDBL_EQ(3.347061799072891e+62, powl(1337.31337, 20)); */
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}
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