int isinf(fpval): Returns nonzero if fpval is infinite : isinf « math.h « C / ANSI-C

1. C / ANSI-C
2. math.h
3. isinf

int isinf(fpval): Returns nonzero if fpval is infinite

  

#include <stdio.h>
#include <math.h>

int main(void)
{
  printf("isinf(-1.0) %d\n", isinf(-1.0));
  printf("isinf(1.0) %d\n", isinf(1.0));
  printf("isinf(1.0/0.0) %d\n", isinf(1.0/0.0));
  return 0;
}

         
/*
isinf(-1.0) 0
isinf(1.0) 0
isinf(1.0/0.0) 1
*/         

           
       

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