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Section: Elementary Functions
Computes the ceiling of an n-dimensional array elementwise. The ceiling of a number is defined as the smallest integer that is larger than or equal to that number. The general syntax for its use is
y = ceil(x)
where x
is a multidimensional array of numerical type. The ceil
function preserves the type of the argument. So integer arguments are not modified, and float
arrays return float
arrays as outputs, and similarly for double
arrays. The ceil
function is not defined for complex
or dcomplex
types.
The following demonstrates the ceil
function applied to various (numerical) arguments. For integer arguments, the ceil function has no effect:
--> ceil(3) ans = 3 --> ceil(-3) ans = -3
Next, we take the ceil
of a floating point value:
--> ceil(float(3.023)) ans = 4 --> ceil(float(-2.341)) ans = -2
Note that the return type is a float
also. Finally, for a double
type:
--> ceil(4.312) ans = 5 --> ceil(-5.32) ans = -5