--- layout: stdlib-reference --- # fabs ## Description Float-point absolute value. ## Signature

T fabs<T>(T x)
    where T : __BuiltinFloatingPointType;

vector<T, N> fabs<T, N:int>(vector<T, N> x)
    where T : __BuiltinFloatingPointType;

## Generic Parameters #### T: [\_\_BuiltinFloatingPointType](../interfaces/0_builtinfloatingpointtype-029hm/index.html) #### N : int ## Parameters #### x : [T](fabs.html#typeparam-T) The input value. #### x : [vector](../types/vector/index.html)\<[T](../types/vector/index.html#typeparam-T), [N](../types/vector/index.html#decl-N)\> The input value. ## Return value The absolute value of x. ## Remarks For metal targets, this function is equivalent to the fabs metal intrinsic. For other targets, this function is equivalent to the abs slang function. ## Availability and Requirements Defined for the following targets: #### hlsl Available in all stages. #### glsl Available in all stages. #### cpp Available in all stages. #### cuda Available in all stages. #### metal Available in all stages. #### wgsl Available in all stages. #### spirv Available in all stages.