# SmoothMax node Returns the maximum value between A and B, but smooths out the intersections of A and B based on T. T is the smoothing value. If 0 is passed at T, function will act as a standard max(), if negative value is passed it will act as [SmoothMin node](/documentation/Nodes/Maths/Scalar/SmoothMin.md).
**Inputs** |Name|Type|Binding|Description| |---|---|---|---| |a|float|none|Input A| |b|float|none|Input B| |t|float|none|Smoothing input| **Outputs** |Name|Type|Binding|Description| |---|---|---|---| |op|float|None|Smooth maximum between A and B| **ShaderInc location**
`res://addons/ShaderLib/Maths/Scalar/SmoothMax.gdshaderinc` **Method signature**
`float smoothmax(float a, float b, float t)` **Parameters** |Name|Type|Description| |---|---|---| |a|float|Input A| |b|float|Input B| |t|float|Smoothing input| ___