isgreater Macro

Determines if its first argument is larger than its second.




int isgreater(floating-point x, floating-point y);


any floating-point number
any floating-point number

Return Value

Determines if x is larger than y, as if by the expression (x) > (y) only without any invalid floating-point exception should the arguments be unordered (i.e. should one of them be NaN).


See the notes at the beginning of this chapter or section for information on using printf() or scanf() (and other functions reading and writing the stdin or stdout streams) in the example code.

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

int main(void)
  double x, y;
  int b;

  x = -5.7;
  y = 2.0;
  b = isgreater(x, y);
  printf("That %f is greater than %f is %s\n", x, y, b ? "true" : "false");

Example Output

That -5.700000 is greater than 2.000000 is false