ceil()
Return the smallest integer that is not less than the argument.
Syntax
ceil( arg )
Parameters
Parameter | Definition |
|---|---|
arg | numeric argument whose least integer upper bound is to be determined |
Description
The ceil() function returns the smallest integer that is not less than arg, that is, the least integer upper bound for arg.
The ceil() function and the floor() function together bracket arg such that the following are true:
If arg is an integer, ceil( arg ) = arg = floor( arg )
If arg is not an integer: floor( arg ) < arg < ceil( arg ) and ceil( arg ) = floor( arg ) + 1
Example
The following example shows how to use the ceil() function:
any_float = 8.4;
ceil_any_float = ceil(any_float);
printf("Ceiling of %f is %d\n",any_float,ceil_any_float);
ceil_any_float = ceil(any_float);
printf("Ceiling of %f is %d\n",any_float,ceil_any_float);