lrint, lrintf, lrintl - round to nearest integer value (long int)

Syntax	#include <math.h> long int lrint(double x); long int lrintf (float x); long int lrintl (long double x);
Description	The functions return the integer value (displayed as a number of type long int) nearest tox. The returned value is rounded according to the currently set rounding mode of the computer. If the default mode is set to ’round-to-nearest’ and the difference between x and the rounded result is exactly 0.5, the next even integer is returned. If the currently set rounding mode rounds infinitely in the positive direction, lrint() is identical to ceil(). If the currently set rounding mode rounds infinitely in the negative direction, lrint() is identical to floor(). In this version the rounding mode is set to round infinitely in the positive direction.
Return val.	Integer value (type long int) nearest to x
		if successful.
	Undefined	for overflow or underflow. errno is set to ERANGE to indicate an error.
See also	abs(), ceil(), floor(), llrint(), llround(), lround(), rint(), round().