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/* Testing int <-> float conversions */
#include <stdio.h>
unsigned int urand(void)
{
static unsigned int seed = 0;
seed = seed * 25173 + 8453;
return seed;
}
signed int srand(void)
{
return (signed int) urand();
}
double fuzzing[] = { 0.0, 0.01, 0.25, 0.4, 0.5, 0.6, 0.75, 0.99 };
double fuzz(void)
{
static unsigned int n = 0;
n = n + 1;
if (n >= sizeof(fuzzing) / sizeof(double)) n = 0;
return fuzzing[n];
}
void test_signed_conv(void)
{
int n = srand();
double f = fuzz();
double d = (double) n;
double e = n < 0 ? d - f : d + f;
int m = (int) e;
if (m != n)
printf("\nError: signed: %d, %g, %g, %d\n", n, f, e, m);
}
void test_unsigned_conv(void)
{
unsigned int n = srand();
double f = fuzz();
double d = (double) n;
double e = f + d;
unsigned int m = (unsigned int) e;
if (m != n)
printf("\nError: unsigned: %u, %g, %g, %u\n", n, f, e, m);
}
int main()
{
int i;
for (i = 0; i < 1000000; i++) {
if ((i % 1000) == 0) { printf("."); fflush(stdout); }
test_signed_conv();
test_unsigned_conv();
}
printf("\n");
return 0;
}
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