mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-01 03:53:33 +00:00
e16a7d8f3b
`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/' ```
50 lines
3.2 KiB
C
50 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/ezbench.h"
|
|
#include "libc/testlib/testlib.h"
|
|
#include "libc/x/xasprintf.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__))));
|
|
}
|
|
|
|
BENCH(atanl, bench) {
|
|
double _atan(double) asm("atan");
|
|
float _atanf(float) asm("atanf");
|
|
long double _atanl(long double) asm("atanl");
|
|
EZBENCH2("-atan", donothing, _atan(.7)); /* ~18ns */
|
|
EZBENCH2("-atanf", donothing, _atanf(.7)); /* ~12ns */
|
|
EZBENCH2("-atanl", donothing, _atanl(.7)); /* ~34ns */
|
|
}
|