March 10, 1994 CEIL 3

### NAME

ceil, ceilf - round to smallest integral value greater than or equal to x

### LIBRARY

Math Library (libm, -lm)

### SYNOPSIS

```double` ceil(```double x`)
```float` ceilf(```float x`)

### DESCRIPTION

The ceil(``) and ceilf(``) functions return the smallest integral value greater than or equal to ```x`.

### SEE ALSO

abs(3), fabs(3), floor(3), ieee(3), math(3), rint(3)

### STANDARDS

The ceil(``) function conforms to ANSI X3.159-1989 (``ANSI C89'') .