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Determines if the specified value is NAN or QNAN.
| ret isnan(x) |
|---|
Parameters
| Item | Description |
|---|---|
| x |
[in] The specified value. |
Return Value
Returns a value of the same size as the input, with a value set to True if the x parameter is NAN or QNAN. Otherwise, False.
Type Description
| Name | Template Type | Component Type | Size |
|---|---|---|---|
| x | scalar, vector, or matrix | float | any |
| ret | scalar, vector, or matrix | bool | as input |
Minimum Shader Model
This function is supported in the following shader models.
| Shader Model | Supported |
|---|---|
| Shader Model 2 (DirectX HLSL) and higher shader models | yes |
| Shader Model 1 (DirectX HLSL) | yes (vs_1_1 only) |
Requirements
| Requirement | Value |
|---|---|
| Header |
|