rint Function

Returns the argument rounded to an integer value.

Include

<math.h>

Prototype

double rint(double x);

Argument

x

the value to round

Return Value

Returns the value of x rounded to an integer value using the current rounding direction, raising the inexact floating-point exception should the result not have the same value as the argument. The rounded integer is returned as a floating-point value.

Example

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

int main(void)
{
  double x, y;

  x = 10.103;
  y = rint(x);
  printf("The nearest integer value to %f is %f\n", x, y);

  x = 10.51;
  y = rint(x);
  printf("The nearest integer value to %f is %f\n", x, y);
}

Example Output

The nearest integer value to 10.103000 is 10.000000
The nearest integer value to 10.510000 is 11.000000