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Fold LIBC_ALG into LIBC_MEM

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Justine Tunney 2022-08-13 08:32:34 -07:00
parent 7cf66bc161
commit 17aea99bb3
162 changed files with 265 additions and 430 deletions
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110
test/libc/mem/comparator_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 │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/mem/alg.h"
#include "libc/intrin/bits.h"
#include "libc/mem/mem.h"
#include "libc/str/str.h"
#include "libc/testlib/testlib.h"
TEST(comparator, testByteCompare) {
char *b1 = malloc(1);
char *b2 = malloc(1);
/* sign doesn't matter */
EXPECT_EQ(cmpsb(memcpy(b1, "a", 1), memcpy(b2, "a", 1)), 0);
EXPECT_LT(cmpsb(memcpy(b1, "a", 1), memcpy(b2, "z", 1)), 0);
EXPECT_GT(cmpsb(memcpy(b1, "z", 1), memcpy(b2, "a", 1)), 0);
EXPECT_EQ(cmpub(memcpy(b1, "a", 1), memcpy(b2, "a", 1)), 0);
EXPECT_LT(cmpub(memcpy(b1, "a", 1), memcpy(b2, "z", 1)), 0);
EXPECT_GT(cmpub(memcpy(b1, "z", 1), memcpy(b2, "a", 1)), 0);
/* sign matters */
EXPECT_EQ(cmpsb(memcpy(b1, "\xf0", 1), memcpy(b2, "\xf0", 1)), 0);
EXPECT_LT(cmpsb(memcpy(b1, "\xf0", 1), memcpy(b2, "\x10", 1)), 0);
EXPECT_GT(cmpsb(memcpy(b1, "\x10", 1), memcpy(b2, "\xf0", 1)), 0);
EXPECT_EQ(cmpub(memcpy(b1, "\xf0", 1), memcpy(b2, "\xf0", 1)), 0);
EXPECT_GT(cmpub(memcpy(b1, "\xf0", 1), memcpy(b2, "\x10", 1)), 0);
EXPECT_LT(cmpub(memcpy(b1, "\x10", 1), memcpy(b2, "\xf0", 1)), 0);
/* two's complement bane */
EXPECT_GT(cmpsb(memcpy(b1, "\x7f", 1), memcpy(b2, "\x80", 1)), 0);
EXPECT_LT(cmpub(memcpy(b1, "\x7f", 1), memcpy(b2, "\x80", 1)), 0);
free(b2);
free(b1);
}
TEST(comparator, testWordCompare) {
char *b1 = malloc(2);
char *b2 = malloc(2);
EXPECT_EQ(cmpsw(memcpy(b1, "\x00\x80", 2), memcpy(b2, "\x00\x80", 2)), 0);
EXPECT_GT(cmpsw(memcpy(b1, "\x00\x7f", 2), memcpy(b2, "\x00\x80", 2)), 0);
EXPECT_LT(cmpsw(memcpy(b1, "\x00\x80", 2), memcpy(b2, "\x00\x7f", 2)), 0);
EXPECT_EQ(cmpuw(memcpy(b1, "\x00\x80", 2), memcpy(b2, "\x00\x80", 2)), 0);
EXPECT_LT(cmpuw(memcpy(b1, "\x00\x7f", 2), memcpy(b2, "\x00\x80", 2)), 0);
EXPECT_GT(cmpuw(memcpy(b1, "\x00\x80", 2), memcpy(b2, "\x00\x7f", 2)), 0);
free(b2);
free(b1);
}
TEST(comparator, testDoublewordCompare) {
char *b1 = malloc(4);
char *b2 = malloc(4);
EXPECT_EQ(cmpsl(memcpy(b1, "\x00\x00\x00\x80", 4),
memcpy(b2, "\x00\x00\x00\x80", 4)),
0);
EXPECT_GT(cmpsl(memcpy(b1, "\x00\x00\x00\x7f", 4),
memcpy(b2, "\x00\x00\x00\x80", 4)),
0);
EXPECT_LT(cmpsl(memcpy(b1, "\x00\x00\x00\x80", 4),
memcpy(b2, "\x00\x00\x00\x7f", 4)),
0);
EXPECT_EQ(cmpul(memcpy(b1, "\x00\x00\x00\x80", 4),
memcpy(b2, "\x00\x00\x00\x80", 4)),
0);
EXPECT_LT(cmpul(memcpy(b1, "\x00\x00\x00\x7f", 4),
memcpy(b2, "\x00\x00\x00\x80", 4)),
0);
EXPECT_GT(cmpul(memcpy(b1, "\x00\x00\x00\x80", 4),
memcpy(b2, "\x00\x00\x00\x7f", 4)),
0);
free(b2);
free(b1);
}
TEST(comparator, testQuadwordCompare) {
char *b1 = malloc(8);
char *b2 = malloc(8);
EXPECT_EQ(cmpsq(memcpy(b1, "\x00\x00\x00\x00\x00\x00\x00\x80", 8),
memcpy(b2, "\x00\x00\x00\x00\x00\x00\x00\x80", 8)),
0);
EXPECT_GT(cmpsq(memcpy(b1, "\x00\x00\x00\x00\x00\x00\x00\x7f", 8),
memcpy(b2, "\x00\x00\x00\x00\x00\x00\x00\x80", 8)),
0);
EXPECT_LT(cmpsq(memcpy(b1, "\x00\x00\x00\x00\x00\x00\x00\x80", 8),
memcpy(b2, "\x00\x00\x00\x00\x00\x00\x00\x7f", 8)),
0);
EXPECT_EQ(cmpuq(memcpy(b1, "\x00\x00\x00\x00\x00\x00\x00\x80", 8),
memcpy(b2, "\x00\x00\x00\x00\x00\x00\x00\x80", 8)),
0);
EXPECT_LT(cmpuq(memcpy(b1, "\x00\x00\x00\x00\x00\x00\x00\x7f", 8),
memcpy(b2, "\x00\x00\x00\x00\x00\x00\x00\x80", 8)),
0);
EXPECT_GT(cmpuq(memcpy(b1, "\x00\x00\x00\x00\x00\x00\x00\x80", 8),
memcpy(b2, "\x00\x00\x00\x00\x00\x00\x00\x7f", 8)),
0);
free(b2);
free(b1);
}