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Add more math fixes

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This commit is contained in:
Justine Tunney 2021-03-06 11:41:01 -08:00
parent 11ec99931b
commit bfef17eb6d
27 changed files with 236 additions and 61 deletions
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40
test/libc/tinymath/atan_test.c Normal file
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2021 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/math.h"
#include "libc/runtime/gc.h"
#include "libc/testlib/testlib.h"
#include "libc/x/x.h"
TEST(atan, test) {
EXPECT_STREQ("0", gc(xasprintf("%.15g", atan(0.))));
EXPECT_STREQ("-0", gc(xasprintf("%.15g", atan(-0.))));
EXPECT_STREQ("0.463647609000806", gc(xasprintf("%.15g", atan(.5))));
EXPECT_STREQ("-0.463647609000806", gc(xasprintf("%.15g", atan(-.5))));
EXPECT_STREQ("0.785398163397448", gc(xasprintf("%.15g", atan(1.))));
EXPECT_STREQ("-0.785398163397448", gc(xasprintf("%.15g", atan(-1.))));
EXPECT_STREQ("0.982793723247329", gc(xasprintf("%.15g", atan(1.5))));
EXPECT_STREQ("-0.982793723247329", gc(xasprintf("%.15g", atan(-1.5))));
EXPECT_STREQ("nan", gc(xasprintf("%.15g", atan(NAN))));
EXPECT_STREQ("-nan", gc(xasprintf("%.15g", atan(-NAN))));
EXPECT_STREQ("1.5707963267949", gc(xasprintf("%.15g", atan(INFINITY))));
EXPECT_STREQ("-1.5707963267949", gc(xasprintf("%.15g", atan(-INFINITY))));
EXPECT_STREQ("2.2250738585072e-308",
gc(xasprintf("%.15g", atan(__DBL_MIN__))));
EXPECT_STREQ("1.5707963267949", gc(xasprintf("%.15g", atan(__DBL_MAX__))));
}