| ROUND(3) | Library Functions Manual | ROUND(3) | 
round, roundf,
  roundl —
#include <math.h>
double
  
  round(double
    x);
float
  
  roundf(float
    x);
long double
  
  roundl(long
    double x);
round(), roundf(), and
  roundl() functions return the nearest integral value
  to x; if x lies halfway between
  two integral values, then these functions return the integral value with the
  larger absolute value (i.e., they round away from zero).
round() and roundf()
  functions conform to ISO/IEC 9899:1999
  (“ISO C99”).
round() and roundf()
  functions appeared in NetBSD 2.0.
| November 12, 2013 | NetBSD 10.0 |