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This commit is contained in:
Radim Kolar 2024-07-08 12:14:15 +02:00
parent d6c3aa5e03
commit 8428f5fd6c
1 changed files with 17 additions and 16 deletions
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29
tests/randomcheck.c
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@ -37,7 +37,7 @@ static unsigned short simple2 (void)
static unsigned short nr(void) static unsigned short nr(void)
{ {
unsigned short ulRandom = ((float)(0xffff)*rand()/(RAND_MAX+1.0f)); unsigned short ulRandom = ((float)(0xffff)*rand()/(RAND_MAX+1.0f));
return(ulRandom); return(ulRandom);
} }
static void run_randomtest( unsigned short (*keygen)(void) ) static void run_randomtest( unsigned short (*keygen)(void) )
@ -50,14 +50,14 @@ static void run_randomtest( unsigned short (*keygen)(void) )
for(i=0;i<rounds;i++) for(i=0;i<rounds;i++)
{ {
rnd=keygen(); rnd=keygen();
for(j=0;j<16;j++) for(j=0;j<16;j++)
{ {
if(rnd & 1) if(rnd & 1)
bitcount[j]++; bitcount[j]++;
rnd=rnd>>1; rnd=rnd>>1;
} }
} }
} }
@ -72,12 +72,12 @@ static void print_bitcount(void)
for(i=0;i<16;i++) for(i=0;i<16;i++)
{ {
ratio=(float)bitcount[i]/rounds; ratio=(float)bitcount[i]/rounds;
if(fabs(ratio-0.5f)>worst) if(fabs(ratio-0.5f)>worst)
worst=fabs(ratio-0.5f); worst=fabs(ratio-0.5f);
printf("%.2f ",ratio); printf("%.2f ", ratio);
} }
printf(" Worst: %.3f\n",worst); printf(" Worst: %.3f\n", worst);
if(worst>MAX_WORST_ALLOWED) result++; if(worst>MAX_WORST_ALLOWED) result++;
} }
@ -87,7 +87,7 @@ int main(int argc,const char *argv[])
rounds=20000; rounds=20000;
if(argc>1) if(argc>1)
{ {
rounds=atoi(argv[1]); rounds=atoi(argv[1]);
} }
printf("Running %d rounds.\n\n",rounds); printf("Running %d rounds.\n\n",rounds);
@ -113,5 +113,6 @@ int main(int argc,const char *argv[])
printf("Generator: Numerical Recipes\n"); printf("Generator: Numerical Recipes\n");
run_randomtest(nr); run_randomtest(nr);
print_bitcount(); print_bitcount();
return result; return result;
} }