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41 lines
2.5 KiB
C
41 lines
2.5 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/intrin/popcnt.h"
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#include "libc/calls/calls.h"
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#include "libc/testlib/ezbench.h"
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#include "libc/testlib/hyperion.h"
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#include "libc/testlib/testlib.h"
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void SetUpOnce(void) {
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ASSERT_SYS(0, 0, pledge("stdio", 0));
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}
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TEST(popcnt, test) {
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EXPECT_EQ(32, popcnt(0x5555555555555555));
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EXPECT_EQ(32, popcnt(VEIL("r", 0x5555555555555555)));
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EXPECT_EQ(32, (popcnt)(VEIL("r", 0x5555555555555555)));
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}
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BENCH(popcnt, bench) {
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EZBENCH2("popcnt", donothing,
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EXPROPRIATE(popcnt(VEIL("r", 0x5555555555555555))));
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EZBENCH2("(popcnt)", donothing,
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EXPROPRIATE((popcnt)(VEIL("r", 0x5555555555555555))));
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EZBENCH_N("_countbits", kHyperionSize, _countbits(kHyperion, kHyperionSize));
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}
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