cdivisioninf

What's the case of float division returning inf and finite value?

I have written this snippet of code and I cannot understand why this float division returns inf when args[2] = 200 and 5.0 when args[2] = 2000. Is this caused because I am exceeding some decimal position boundary?

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
int main(int nargs, char **args) {

    float t = atoi(args[1]);   
    float dt = atoi(args[2])/1000;

    float nsamples = (t/dt);
    printf("%f\n", nsamples);
    return(0);
}
Solution

  • You're just getting tripped up by integer division (200 / 1000 = 0).

    Change float dt = atoi(args[2])/1000; -> float dt = atoi(args[2])/1000.0f;