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Justine Tunney 2020-06-15 07:18:57 -07:00
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test/libc/tinymath/powl_test.c Normal file
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ This program is free software; you can redistribute it and/or modify │
│ it under the terms of the GNU General Public License as published by │
│ the Free Software Foundation; version 2 of the License. │
│ │
│ This program is distributed in the hope that it will be useful, but │
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
│ General Public License for more details. │
│ │
│ You should have received a copy of the GNU General Public License │
│ along with this program; if not, write to the Free Software │
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
│ 02110-1301 USA │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/math.h"
#include "libc/runtime/gc.h"
#include "libc/testlib/ezbench.h"
#include "libc/testlib/testlib.h"
#include "libc/tinymath/tinymath.h"
#include "libc/x/x.h"
#include "third_party/dtoa/dtoa.h"
TEST(powl, testLongDouble) {
/* .4248496805467504836322459796959084815827285786480897 */
EXPECT_STARTSWITH(".4248496805467504", gc(xdtoa(powl(0.7, 2.4))));
EXPECT_STARTSWITH(".4248496805467504", gc(xdtoa(tinymath_powl(0.7, 2.4))));
}
TEST(powl, testDouble) {
EXPECT_STARTSWITH(".4248496805467504", gc(xdtoa(pow(0.7, 2.4))));
EXPECT_STARTSWITH(".4248496805467504", gc(xdtoa(tinymath_pow(0.7, 2.4))));
}
TEST(powl, testFloat) {
EXPECT_STARTSWITH(".4248496", gc(xdtoa(powf(0.7f, 2.4f))));
EXPECT_STARTSWITH(".4248496", gc(xdtoa(tinymath_powf(0.7f, 2.4f))));
}
static long double do_powl(void) {
return CONCEAL("t", tinymath_powl(CONCEAL("t", 0.7), CONCEAL("t", 0.2)));
}
static double do_pow(void) {
return CONCEAL("x", tinymath_pow(CONCEAL("x", 0.7), CONCEAL("x", 0.2)));
}
static float do_powf(void) {
return CONCEAL("x", tinymath_powf(CONCEAL("x", 0.7f), CONCEAL("x", 0.2f)));
}
BENCH(powl, bench) {
EZBENCH2("powl", donothing, do_powl()); /* ~61ns */
EZBENCH2("pow", donothing, do_pow()); /* ~64ns */
EZBENCH2("powf", donothing, do_powf()); /* ~64ns */
}