isgreaterequal Macro

Determines if its first argument is larger than or equal to its second.




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


any floating-point number
any floating-point number

Return Value

Determines if x is larger than or equal to 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 = isgreaterequal(x, y);
  printf("That %f is greater than or equal %f is %s\n", x, y, b ? "true" : "false");

Example Output

That -5.700000 is greater than or equal 2.000000 is false