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Justine Tunney 2020-06-15 07:18:57 -07:00
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test/libc/nexgen32e/memeqmask_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/bits/bits.h"
#include "libc/runtime/buffer.h"
#include "libc/runtime/gc.h"
#include "libc/runtime/mappings.h"
#include "libc/stdio/stdio.h"
#include "libc/str/str.h"
#include "libc/testlib/testlib.h"
#include "libc/x/x.h"
#define ALIGN 128
#define BUFSIZE (8 * 32)
#define MASKSIZE (BUFSIZE / CHAR_BIT)
const char kX[] = "aaaaaaaaeeeeeeeeeeeeeeeeeeeeeeee"
"e e"
"e e"
"e e"
"e e"
"e e"
"e e"
"eeeeeeeeeeeeeeeeeeeeeeeeeeeeee-e";
const char kY[] = "aaaaaaaaefffffffffffeffffffffff-"
"f z-"
"f f"
"f f"
"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
"f f"
"f f"
"ffffffffffffffffffffffffffffff-f";
const char kM[] = "11111111100000000000100000000000"
"01111111111111111111111111111100"
"01111111111111111111111111111110"
"01111111111111111111111111111110"
"00000000000000000000000000000000"
"01111111111111111111111111111110"
"01111111111111111111111111111110"
"00000000000000000000000000000010";
nodiscard char *binify(uint8_t *data, size_t size) {
uint8_t b;
size_t i, j;
char *s, *p;
p = s = xmalloc(size * CHAR_BIT + 1);
for (i = 0; i < size; ++i) {
b = data[i];
for (j = 0; j < CHAR_BIT; ++j) {
*p++ = "01"[b & 1];
b >>= 1;
}
}
*p = '\0';
return s;
}
TEST(memeqmask, test) {
struct GuardedBuffer x = {}, y = {}, m = {};
memcpy(balloc(&x, ALIGN, BUFSIZE), kX, BUFSIZE);
memcpy(balloc(&y, ALIGN, BUFSIZE), kY, BUFSIZE);
balloc(&m, ALIGN, MASKSIZE);
EXPECT_EQ((intptr_t)m.p, (intptr_t)memeqmask(m.p, x.p, y.p, BUFSIZE));
EXPECT_STREQ(kM, gc(binify(m.p, MASKSIZE)));
bfree(&m);
bfree(&x);
bfree(&y);
}
#if 0
#include "libc/rand/rand.h"
#include "libc/testlib/ezbench.h"
TEST(memeqmask, bench) {
size_t len = 64 * 1024;
char *m = xmemalign(64, DIMMASK(len));
char *x = xmemalign(64, len);
char *y = xmemalign(64, len);
EZBENCH(
{
rngset(x, len, rand64, -1);
rngset(y, len, rand64, -1);
},
memeqmask(m, x, y, len));
}
#endif