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https://github.com/jart/cosmopolitan.git
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70 lines
3.2 KiB
C
70 lines
3.2 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 2022 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/rand/rand.h"
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#include "libc/str/str.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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TEST(memrchr, testNotFoundSse) {
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char buf[16] = {0};
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ASSERT_EQ(NULL, memrchr(buf, 1, 16));
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}
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TEST(memrchr, testNotFoundPure) {
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char buf[15] = {0};
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ASSERT_EQ(NULL, memrchr(buf, 1, 15));
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}
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TEST(memrchr, testSse) {
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char buf[16];
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rngset(buf, sizeof(buf), lemur64, -1);
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ASSERT_EQ(buf + 0, memrchr(buf, buf[0], 16));
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ASSERT_EQ(buf + 15, memrchr(buf, buf[15], 16));
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}
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TEST(memrchr, testPure) {
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char buf[15];
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rngset(buf, sizeof(buf), lemur64, -1);
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ASSERT_EQ(buf + 0, memrchr(buf, buf[0], 15));
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ASSERT_EQ(buf + 14, memrchr(buf, buf[14], 15));
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}
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TEST(memrchr, testSse2) {
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char buf[32];
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rngset(buf, sizeof(buf), lemur64, -1);
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ASSERT_EQ(buf + 0, memrchr(buf, buf[0], 32));
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ASSERT_EQ(buf + 15, memrchr(buf, buf[15], 32));
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ASSERT_EQ(buf + 16, memrchr(buf, buf[16], 32));
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ASSERT_EQ(buf + 31, memrchr(buf, buf[31], 32));
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}
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TEST(memrchr, testSsePure) {
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char buf[20];
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rngset(buf, sizeof(buf), lemur64, -1);
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ASSERT_EQ(buf + 0, memrchr(buf, buf[0], 20));
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ASSERT_EQ(buf + 15, memrchr(buf, buf[15], 20));
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ASSERT_EQ(buf + 16, memrchr(buf, buf[16], 20));
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ASSERT_EQ(buf + 19, memrchr(buf, buf[19], 20));
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}
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BENCH(memrchr, bench) {
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void *memrchr_(const void *, int, size_t) asm("memrchr");
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EZBENCH2("memrchr", donothing, memrchr_(kHyperion, 255, kHyperionSize));
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}
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