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remove TABs which again slipped in....

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This commit is contained in:
Christian Groessler
2020-12-25 07:16:26 +01:00
parent d67b955e52
commit ef258bdc19
4 changed files with 613 additions and 613 deletions
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134
test/val/rand.c
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@@ -28,83 +28,83 @@ static uint32_t seed;
int ref_rand()
{
uint16_t output;
/* seed follows the LCG sequence * 0x01010101 + 0xB3B3B3B3 */
seed = seed * 0x01010101UL + 0xB3B3B3B3UL;
/* output uses the top two bytes (reversed) XOR with bottom two bytes */
{
uint16_t s0 = (seed >> 0) & 0xFF;
uint16_t s1 = (seed >> 8) & 0xFF;
uint16_t s2 = (seed >> 16) & 0xFF;
uint16_t s3 = (seed >> 24) & 0xFF;
uint16_t o0 = s3 ^ s1;
uint16_t o1 = s2 ^ s0;
output = o0 | (o1 << 8);
}
return (int)(output & 0x7FFF);
uint16_t output;
/* seed follows the LCG sequence * 0x01010101 + 0xB3B3B3B3 */
seed = seed * 0x01010101UL + 0xB3B3B3B3UL;
/* output uses the top two bytes (reversed) XOR with bottom two bytes */
{
uint16_t s0 = (seed >> 0) & 0xFF;
uint16_t s1 = (seed >> 8) & 0xFF;
uint16_t s2 = (seed >> 16) & 0xFF;
uint16_t s3 = (seed >> 24) & 0xFF;
uint16_t o0 = s3 ^ s1;
uint16_t o1 = s2 ^ s0;
output = o0 | (o1 << 8);
}
return (int)(output & 0x7FFF);
}
void ref_srand(int ax)
{
uint32_t s = (unsigned int)ax;
seed = s | (s << 16); /* low 16 bits is convenient filler for high 16 bits */
ref_rand(); /* one pre-call "shuffles" the first rand() result so it isn't too predictable */
uint32_t s = (unsigned int)ax;
seed = s | (s << 16); /* low 16 bits is convenient filler for high 16 bits */
ref_rand(); /* one pre-call "shuffles" the first rand() result so it isn't too predictable */
}
int main(void)
{
unsigned int i,j;
int a,b;
unsigned int i,j;
int a,b;
/* test that startup state is equivalent to srand(1) */
{
//srand(1); // implied
ref_srand(1);
for (j=0; j<SUBTESTS; ++j)
{
a = rand();
b = ref_rand();
if (a != b)
{
printf("failed startup seed at test %d. rand()=%d reference=%d\n",j,a,b);
return EXIT_FAILURE;
}
}
}
/* test that startup state is equivalent to srand(1) */
{
//srand(1); // implied
ref_srand(1);
for (j=0; j<SUBTESTS; ++j)
{
a = rand();
b = ref_rand();
if (a != b)
{
printf("failed startup seed at test %d. rand()=%d reference=%d\n",j,a,b);
return EXIT_FAILURE;
}
}
}
/* test every power of 2 seed */
for (i = 0; i < 16; ++i)
{
srand(1<<i);
ref_srand(1<<i);
for (j=0; j<SUBTESTS; ++j)
{
a = rand();
b = ref_rand();
if (a != b)
{
printf("failed seed %d at test %d. rand()=%d reference=%d\n",(1<<i),j,a,b);
return EXIT_FAILURE;
}
}
}
/* test every power of 2 seed */
for (i = 0; i < 16; ++i)
{
srand(1<<i);
ref_srand(1<<i);
for (j=0; j<SUBTESTS; ++j)
{
a = rand();
b = ref_rand();
if (a != b)
{
printf("failed seed %d at test %d. rand()=%d reference=%d\n",(1<<i),j,a,b);
return EXIT_FAILURE;
}
}
}
/* test a sampling of seeds*/
for (i = 0; i < 32768UL; i += TESTINC)
{
srand(i);
ref_srand(i);
for (j=0; j<SUBTESTS; ++j)
{
a = rand();
b = ref_rand();
if (a != b)
{
printf("failed seed %d at test %d. rand()=%d reference=%d\n",(1<<i),j,a,b);
return EXIT_FAILURE;
}
}
}
/* test a sampling of seeds*/
for (i = 0; i < 32768UL; i += TESTINC)
{
srand(i);
ref_srand(i);
for (j=0; j<SUBTESTS; ++j)
{
a = rand();
b = ref_rand();
if (a != b)
{
printf("failed seed %d at test %d. rand()=%d reference=%d\n",(1<<i),j,a,b);
return EXIT_FAILURE;
}
}
}
return EXIT_SUCCESS;
return EXIT_SUCCESS;
}