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stdlib: add a test for TinyMT random numbers

This commit is contained in:
Lephenixnoir 2021-06-08 11:46:48 +02:00
parent d5d3c791f3
commit 684f827e99
Signed by: Lephenixnoir
GPG Key ID: 1BBA026E13FC0495
4 changed files with 33 additions and 0 deletions
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1
CMakeLists.txt
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@ -41,6 +41,7 @@ set(SOURCES
src/stdlib/exit.c
src/stdlib/fpconv.c
src/stdlib/intconv.c
src/stdlib/rand.c
src/stdlib/sizes.c
# string
src/string/core.c

1
include/ft/all-tests.h
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@ -34,6 +34,7 @@ extern ft_test ft_stdlib_sizes;
extern ft_test ft_stdlib_llconv;
extern ft_test ft_stdlib_lconv;
extern ft_test ft_stdlib_fpconv;
extern ft_test ft_stdlib_rand;
extern ft_test ft_stdlib_exit;
extern ft_test ft_stdlib__Exit;
extern ft_test ft_stdlib_abort;

1
src/main.c
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@ -51,6 +51,7 @@ ft_list headers_libc[] = {
&ft_stdlib_llconv,
&ft_stdlib_lconv,
&ft_stdlib_fpconv,
&ft_stdlib_rand,
&ft_stdlib_exit,
&ft_stdlib__Exit,
&ft_stdlib_abort,

30
src/stdlib/rand.c Normal file
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@ -0,0 +1,30 @@
#include <ft/test.h>
#include <ft/all-tests.h>
#include <stdlib.h>
void _ft_stdlib_rand(ft_test *t)
{
srand(0xdeadbeef);
ft_assert(t, rand() == 0x797dd849);
ft_assert(t, rand() == 0x02687112);
ft_assert(t, rand() == 0x2222a00d);
ft_assert(t, rand() == 0x67c2ff94);
unsigned int seed = 0xc0ffee;
srand(seed);
ft_log(t, "Seed: %#x\n\n", seed);
for(int i = 0; i < 8; i++) {
int i1 = rand();
int i2 = rand();
int i3 = rand();
int i4 = rand();
ft_log(t, " %08X %08X %08X %08X\n", i1, i2, i3, i4);
}
}
ft_test ft_stdlib_rand = {
.name = "TinyMT random numbers",
.function = _ft_stdlib_rand,
};