Returns the smallest integer value that is greater than or equal to the specified value.

ret ceil(x)





[in] The specified value.


Return Value

The smallest integer value (returned as a floating-point type) that is greater than or equal to the x parameter.

Type Description

Name Template Type Component Type Size
xscalar, vector, or matrix float any
retsame as input x float same dimension(s) as input x


Minimum Shader Model

This function is supported in the following shader models.

Shader ModelSupported
Shader Model 2 (DirectX HLSL) and higher shader modelsyes
Shader Model 1 (DirectX HLSL) vs_1_1


See also

Intrinsic Functions (DirectX HLSL)