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Truncates a floating-point value to the integer component.
| ret trunc(x) |
|---|
Parameters
| Item | Description |
|---|---|
| x |
[in] The specified input. |
Return Value
The input value truncated to an integer component.
Remarks
This function truncates a floating-point value to the integer component. Given a floating-point value of 1.6, the trunc function would return 1.0, whereas the round (DirectX HLSL) function would return 2.0.
Type Description
| Name | Template Type | Component Type | Size |
|---|---|---|---|
| x | scalar, vector, or matrix | float | any |
| ret | Same type as input x | float | Same dimension(s) as input x |
Minimum Shader Model
This function is supported in the following shader models.
| Shader Model | Supported |
|---|---|
| Shader Model 1 (DirectX HLSL) and higher shader models | yes |
Requirements
| Requirement | Value |
|---|---|
| Header |
|