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Returns the mantissa and exponent of the specified floating-point value.
| ret frexp(x, exp) |
|---|
The return value is the mantissa, and the value returned by exp parameter is the exponent.
Parameters
| Item | Description |
|---|---|
| x |
[in] The specified floating-point value. If the x parameter is 0, this function returns 0 for both the mantissa and the exponent. |
| exp |
[out] The returned exponent of the x parameter. |
Return Value
The mantissa of the x parameter.
Type Description
| Name | Template Type | Component Type | Size |
|---|---|---|---|
| x | scalar, vector, or matrix | float | any |
| exp | same as input x | float | same dimension(s) as input x |
| ret | same 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 3 (DirectX HLSL) and higher shader models | yes |
| Shader Model 2 (DirectX HLSL) | yes (ps_2_x only) |
| Shader Model 1 (DirectX HLSL) | no |
Remarks
Requirements
| Requirement | Value |
|---|---|
| Header |
|