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Justine Tunney 2020-06-15 07:18:57 -07:00
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test/libc/str/crc32c_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/dce.h"
#include "libc/nexgen32e/x86feature.h"
#include "libc/str/str.h"
#include "libc/testlib/testlib.h"
#define FANATICS "Fanatics"
static const char hyperion[] =
FANATICS " have their dreams, wherewith they weave / "
"A paradise for a sect; the savage too / "
"From forth the loftiest fashion of his sleep / "
"...";
TEST(crc32c, test) {
EXPECT_EQ(0, crc32c(0, "", 0));
EXPECT_EQ(crc32c(0, "hello", 5), crc32c(0, "hello", 5));
EXPECT_EQ(0xe3069283, crc32c(0, "123456789", 9));
EXPECT_EQ(0x6d6eefba, crc32c(0, hyperion, strlen(hyperion)));
EXPECT_EQ(0x6d6eefba, crc32c(crc32c(0, FANATICS, strlen(FANATICS)),
hyperion + strlen(FANATICS),
strlen(hyperion) - strlen(FANATICS)));
}
uint32_t crc32c$pure(uint32_t, const char *, size_t) hidden;
uint32_t crc32c$sse42(uint32_t, const char *, size_t) hidden;
FIXTURE(crc32c, pure) { *(void **)(&crc32c) = (void *)crc32c$pure; }
FIXTURE(crc32c, sse42) {
if (X86_HAVE(SSE4_2)) {
*(void **)(&crc32c) = (void *)crc32c$sse42;
}
}