floor, floorf, ceil, ceilf : floor and ceiling

Synopsis

#include <math.h>
double floor(double x);
float floorf(float x);
double ceil(double x);
float ceilf(float x);
```### Description

floor and floorf find the nearest integer less than or equal to x. ceil and ceilf find the nearest integer greater than or equal to x.### Returns

floor and ceil return the integer result as a double. floorf and ceilf return the integer result as a float.

---

**Authoritative source**: BUSMASTER DITA help source `floor.dita`, compiled into `BUSMASTER.CHM` with the application.