mirror of
https://github.com/jart/cosmopolitan.git
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65 lines
3.3 KiB
C
65 lines
3.3 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/mem/gc.internal.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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double _fabs(double) asm("fabs");
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float _fabsf(float) asm("fabsf");
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long double _fabsl(long double) asm("fabsl");
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TEST(fabsl, test) {
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EXPECT_STREQ("0", gc(xdtoal(_fabsl(-0.))));
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EXPECT_STREQ("0", gc(xdtoal(_fabsl(-0.))));
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EXPECT_STREQ("NAN", gc(xdtoal(_fabsl(NAN))));
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EXPECT_STREQ("INFINITY", gc(xdtoal(_fabsl(INFINITY))));
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EXPECT_STREQ("INFINITY", gc(xdtoal(_fabsl(-INFINITY))));
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}
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TEST(fabs, test) {
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EXPECT_STREQ("0", gc(xdtoa(_fabs(-0.))));
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EXPECT_STREQ("0", gc(xdtoa(_fabs(-0.))));
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EXPECT_STREQ("NAN", gc(xdtoa(_fabs(NAN))));
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EXPECT_STREQ("INFINITY", gc(xdtoa(_fabs(INFINITY))));
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EXPECT_STREQ("INFINITY", gc(xdtoa(_fabs(-INFINITY))));
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}
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TEST(fabsf, test) {
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EXPECT_STREQ("0", gc(xdtoaf(_fabsf(-0.))));
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EXPECT_STREQ("0", gc(xdtoaf(_fabsf(-0.))));
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EXPECT_STREQ("NAN", gc(xdtoaf(_fabsf(NAN))));
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EXPECT_STREQ("INFINITY", gc(xdtoaf(_fabsf(INFINITY))));
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EXPECT_STREQ("INFINITY", gc(xdtoaf(_fabsf(-INFINITY))));
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}
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TEST(fabs, stuff) {
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EXPECT_LDBL_EQ(3.14, _fabs(3.14));
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EXPECT_LDBL_EQ(3.14, _fabs(-3.14));
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EXPECT_EQ(1, !!isnan(_fabs(NAN)));
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EXPECT_EQ(1, !!isnan(_fabs(-NAN)));
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EXPECT_EQ(0, !!signbit(_fabs(-NAN)));
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}
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BENCH(fabs, bench) {
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EZBENCH2("fabs", donothing, _fabs(.7)); /* ~6ns */
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EZBENCH2("fabsf", donothing, _fabsf(.7)); /* ~5ns */
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EZBENCH2("fabsl", donothing, _fabsl(.7)); /* ~28ns */
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}
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