cosmopolitan/test/libc/tinymath/tgamma_test.c
Jōshin e16a7d8f3b
flip et / noet in modelines
`et` means `expandtab`.

```sh
rg 'vi: .* :vi' -l -0 | \
  xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\)  :vi/vi: \1 xoet\2:vi/'
rg 'vi: .*  :vi' -l -0 | \
  xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2  :vi/'
rg 'vi: .*  :vi' -l -0 | \
  xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/'
```
2023-12-07 22:17:11 -05:00

47 lines
3.2 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│ vi: set et 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/mem/gc.h"
#include "libc/testlib/testlib.h"
#include "libc/x/xasprintf.h"
TEST(tgamma, test) {
EXPECT_STREQ("inf", _gc(xasprintf("%.15g", tgamma(0.))));
EXPECT_STREQ("-inf", _gc(xasprintf("%.15g", tgamma(-0.))));
EXPECT_STREQ("9.51350769866873", _gc(xasprintf("%.15g", tgamma(.1))));
EXPECT_STREQ("-10.6862870211932", _gc(xasprintf("%.15g", tgamma(-.1))));
EXPECT_STREQ("1.77245385090552", _gc(xasprintf("%.15g", tgamma(.5))));
EXPECT_STREQ("-3.54490770181103", _gc(xasprintf("%.15g", tgamma(-.5))));
EXPECT_STREQ("1", _gc(xasprintf("%.15g", tgamma(1.))));
EXPECT_TRUE(isnan(tgamma(-1.)));
EXPECT_STREQ("0.886226925452758", _gc(xasprintf("%.15g", tgamma(1.5))));
EXPECT_STREQ("2.36327180120735", _gc(xasprintf("%.15g", tgamma(-1.5))));
EXPECT_STREQ("1", _gc(xasprintf("%.15g", tgamma(2.))));
EXPECT_TRUE(isnan(tgamma(NAN)));
EXPECT_TRUE(isnan(tgamma(-NAN)));
EXPECT_STREQ("inf", _gc(xasprintf("%.15g", tgamma(INFINITY))));
EXPECT_TRUE(isnan(tgamma(-INFINITY)));
EXPECT_STREQ("4.49423283715579e+307",
_gc(xasprintf("%.15g", tgamma(__DBL_MIN__))));
EXPECT_STREQ("inf", _gc(xasprintf("%.15g", tgamma(__DBL_MAX__))));
EXPECT_STREQ("4.5035996273705e+15",
_gc(xasprintf("%.14g", tgamma(-1.0000000000000002))));
EXPECT_STREQ("-47453133.3893415",
_gc(xasprintf("%.15g", tgamma(-2.1073424255447e-08))));
}