mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-05-22 21:32:31 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Fold LIBC_RAND into LIBC_STDIO/TINYMATH/INTRIN

Browse source
This commit is contained in:
Justine Tunney 2022-08-11 12:26:30 -07:00
parent 05b8f82371
commit 8a0a2c0c36
183 changed files with 149 additions and 322 deletions
Download patch file Download diff file Expand all files Collapse all files

55
test/libc/stdio/rand_test.c Normal file
View file

@ -0,0 +1,55 @@
/*-*- 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/intrin/bits.h"
#include "libc/mem/mem.h"
#include "libc/stdio/rand.h"
#include "libc/str/str.h"
#include "libc/testlib/hyperion.h"
#include "libc/testlib/testlib.h"
TEST(rand002, alwaysReturnsPositiveNumbers) {
for (unsigned i = 0; i < 100; ++i) {
ASSERT_GT(rand(), 0);
}
}
TEST(rand003, srandSmokeTest) {
srand(1);
ASSERT_EQ(908834774, rand());
srand(1);
ASSERT_EQ(908834774, rand());
srand(7);
ASSERT_EQ(1059165278, rand());
}
TEST(rand005, rand64SmokeTest) {
ASSERT_TRUE(rand64() != rand64() || rand64() != rand64());
}
TEST(rand64, test) {
char *p;
size_t i;
uint64_t x;
p = memcpy(malloc(kHyperionSize), kHyperion, kHyperionSize);
for (i = 0; i < kHyperionSize / 8; ++i) {
x = rand64();
WRITE64LE(p + i * 8, x);
}
free(p);
}