| CEIL(3) | Library Functions Manual | CEIL(3) | 
ceil, ceilf,
  ceill, floor,
  floorf, floorl —
#include <math.h>
double
  
  ceil(double
    x);
float
  
  ceilf(float
    x);
long double
  
  ceill(long
    double x);
double
  
  floor(double
    x);
float
  
  floorf(float
    x);
long double
  
  floorl(long
    double x);
ceil(), ceilf(), and
  ceill() functions return the smallest integral value
  greater than or equal to x. Conversely, the
  floor(), floorf(), and
  floorl() functions return the largest integral value
  less than or equal to x.
| November 12, 2013 | NetBSD 9.3 |