nextafter()

Returns the next representable value.

  #include <math.h>
  
  double nextafter(double x, double y);
  
  float nextafterf(float x, float y);
  
  long double nextafterl(long double x, long double y);    

x

Current representable value.

y

Direction to compute the next representable value.

These functions compute the next representable value, after x in the direction of y. Thus, if y is less than x, nextafter() returns the largest representable floating-point number that is less than x.

This facility may not be available on configurations of the EWL that run on platforms that do not have floating-point math capabilities.

#include <math.h>

#include <stdio.h>

int main(void)

{

double x = 7.0;

double y;

y = x + 1.0;

printf("nextafter(%f, %f) = %f\n", x, y, nextafter(x,y));

return 0;

}

Output:

nextafter(7.000000, 8.000000) = 7.000004