mirror of
https://github.com/jart/cosmopolitan.git
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550b52abf6
- Introduce epoll_pwait() - Rewrite -ftrapv and ffs() libraries in C code - Use more FreeBSD code in math function library - Get significantly more tests passing on qemu-aarch64 - Fix many Musl long double functions that were broken on AARCH64
82 lines
4.6 KiB
C
82 lines
4.6 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/mem/gc.h"
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#include "libc/testlib/ezbench.h"
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#include "libc/testlib/testlib.h"
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#include "libc/x/x.h"
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#include "libc/x/xasprintf.h"
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double _expm1(double) asm("expm1");
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float _expm1f(float) asm("expm1f");
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long double _expm1l(long double) asm("expm1l");
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TEST(expm1, test) {
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EXPECT_STREQ("0", _gc(xdtoa(_expm1(0))));
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EXPECT_STREQ("-0", _gc(xdtoa(_expm1(-0.))));
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EXPECT_STREQ("NAN", _gc(xdtoa(_expm1(NAN))));
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EXPECT_STREQ("-1", _gc(xdtoa(_expm1(-INFINITY))));
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EXPECT_STREQ("INFINITY", _gc(xdtoa(_expm1(INFINITY))));
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/* EXPECT_STREQ("-INFINITY", _gc(xdtoa(_expm1(-132098844872390)))); */
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/* EXPECT_STREQ("INFINITY", _gc(xdtoa(_expm1(132098844872390)))); */
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EXPECT_STREQ("0", _gc(xasprintf("%.15g", _expm1(0.))));
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EXPECT_STREQ("-0", _gc(xasprintf("%.15g", _expm1(-0.))));
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EXPECT_STREQ("0.648721270700128", _gc(xasprintf("%.15g", _expm1(.5))));
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EXPECT_STREQ("-0.393469340287367", _gc(xasprintf("%.15g", _expm1(-.5))));
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EXPECT_STREQ("1.71828182845905", _gc(xasprintf("%.15g", _expm1(1.))));
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EXPECT_STREQ("-0.632120558828558", _gc(xasprintf("%.15g", _expm1(-1.))));
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EXPECT_STREQ("3.48168907033806", _gc(xasprintf("%.15g", _expm1(1.5))));
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EXPECT_STREQ("-0.77686983985157", _gc(xasprintf("%.15g", _expm1(-1.5))));
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EXPECT_STREQ("6.38905609893065", _gc(xasprintf("%.15g", _expm1(2.))));
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EXPECT_TRUE(isnan(_expm1(NAN)));
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EXPECT_TRUE(isnan(_expm1(-NAN)));
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EXPECT_STREQ("inf", _gc(xasprintf("%.15g", _expm1(INFINITY))));
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EXPECT_STREQ("-1", _gc(xasprintf("%.15g", _expm1(-INFINITY))));
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EXPECT_STREQ("2.2250738585072e-308",
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_gc(xasprintf("%.15g", _expm1(__DBL_MIN__))));
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EXPECT_STREQ("inf", _gc(xasprintf("%.15g", _expm1(__DBL_MAX__))));
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}
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TEST(expm1l, test) {
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EXPECT_STREQ("1.718281828459045", _gc(xdtoal(_expm1l(1))));
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EXPECT_STREQ("1.718281828459045", _gc(xdtoal(expl(1) - 1)));
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EXPECT_STREQ("0", _gc(xdtoal(_expm1l(0))));
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EXPECT_STREQ("-0", _gc(xdtoal(_expm1l(-0.))));
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EXPECT_STREQ("NAN", _gc(xdtoal(_expm1l(NAN))));
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EXPECT_STREQ("-1", _gc(xdtoal(_expm1l(-INFINITY))));
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EXPECT_STREQ("INFINITY", _gc(xdtoal(_expm1l(INFINITY))));
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/* EXPECT_STREQ("-INFINITY", _gc(xdtoal(_expm1l(-132098844872390)))); */
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/* EXPECT_STREQ("INFINITY", _gc(xdtoal(_expm1l(132098844872390)))); */
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}
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TEST(expm1f, test) {
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EXPECT_STREQ("0", _gc(xdtoaf(_expm1f(0))));
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EXPECT_STREQ("-0", _gc(xdtoaf(_expm1f(-0.))));
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EXPECT_STREQ("NAN", _gc(xdtoaf(_expm1f(NAN))));
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EXPECT_STREQ("-1", _gc(xdtoaf(_expm1f(-INFINITY))));
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EXPECT_STREQ("INFINITY", _gc(xdtoaf(_expm1f(INFINITY))));
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/* EXPECT_STREQ("-INFINITY", _gc(xdtoaf(_expm1f(-132098844872390)))); */
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/* EXPECT_STREQ("INFINITY", _gc(xdtoaf(_expm1f(132098844872390)))); */
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}
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BENCH(expm1, bench) {
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EZBENCH2("expm1", donothing, _expm1(.7)); // ~17ns
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EZBENCH2("expm1f", donothing, _expm1f(.7)); // ~13ns
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EZBENCH2("expm1l", donothing, _expm1l(.7)); // ~33ns
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}
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