oscar64/autotest/floatinttest.c

76 lines
923 B
C

#include <assert.h>
#include <stdio.h>
#include <math.h>
int main(void)
{
float a;
int i;
long li;
unsigned u;
unsigned long lu;
a = 1.0;
i = 1;
for(int j=0; j<15; j++)
{
assert(i == (int)a);
assert(a == (float)i);
a *= 2.0;
i <<= 1;
}
a = -1.0;
i = -1;
for(int j=0; j<15; j++)
{
assert(i == (int)a);
assert(a == (float)i);
a *= 2.0;
i <<= 1;
}
a = 1.0;
u = 1;
for(int j=0; j<16; j++)
{
assert(u == (unsigned)a);
assert(a == (float)u);
a *= 2.0;
u <<= 1;
}
a = 1.0;
li = 1;
for(int j=0; j<31; j++)
{
assert(li == (long)a);
assert(a == (float)li);
a *= 2.0;
li <<= 1;
}
a = -1.0;
li = -1;
for(int j=0; j<31; j++)
{
assert(li == (long)a);
assert(a == (float)li);
a *= 2.0;
li <<= 1;
}
a = 1.0;
lu = 1;
for(int j=0; j<32; j++)
{
assert(lu == (unsigned long)a);
assert(a == (float)lu);
a *= 2.0;
lu <<= 1;
}
return 0;
}