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54 lines
3.1 KiB
C
54 lines
3.1 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/stdio/rand.h"
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#include "libc/runtime/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 asin_(double) asm("asin");
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#define asin asin_
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TEST(asin, test) {
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EXPECT_STREQ("0", gc(xasprintf("%.15g", asin(0.))));
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EXPECT_STREQ("-0", gc(xasprintf("%.15g", asin(-0.))));
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EXPECT_STREQ("0.523598775598299", gc(xasprintf("%.15g", asin(.5))));
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EXPECT_STREQ("-0.523598775598299", gc(xasprintf("%.15g", asin(-.5))));
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EXPECT_STREQ("1.5707963267949", gc(xasprintf("%.15g", asin(1.))));
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EXPECT_STREQ("-1.5707963267949", gc(xasprintf("%.15g", asin(-1.))));
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EXPECT_TRUE(isnan(asin(1.5)));
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EXPECT_TRUE(isnan(asin(-1.5)));
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EXPECT_TRUE(isnan(asin(NAN)));
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EXPECT_TRUE(isnan(asin(-NAN)));
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EXPECT_TRUE(isnan(asin(INFINITY)));
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EXPECT_TRUE(isnan(asin(-INFINITY)));
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EXPECT_STREQ("2.2250738585072e-308",
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gc(xasprintf("%.15g", asin(__DBL_MIN__))));
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EXPECT_TRUE(isnan(asin(__DBL_MAX__)));
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}
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BENCH(asinl, bench) {
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double _asin(double) asm("asin");
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float _asinf(float) asm("asinf");
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long double _asinl(long double) asm("asinl");
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EZBENCH2("-asin", donothing, _asin(.7)); /* ~16ns */
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EZBENCH2("-asinf", donothing, _asinf(.7)); /* ~12ns */
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EZBENCH2("-asinl", donothing, _asinl(.7)); /* ~39ns */
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}
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