--- layout: stdlib-reference --- # dot ## Description Vector dot product. Returns the dot product of two vectors. ## Signature

T dot<T>(
    T x,
    T y)
    where T : __BuiltinFloatingPointType;

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

T dot<T, int N>(
    vector<T, N> x,
    vector<T, N> y)
    where T : __BuiltinIntegerType;

## Generic Parameters #### T: [\_\_BuiltinFloatingPointType](../interfaces/0_builtinfloatingpointtype-029hm/index.html) #### N : int #### T: [\_\_BuiltinIntegerType](../interfaces/0_builtinintegertype-029g/index.html) ## Parameters #### x : [T](dot.html#typeparam-T) The first vector. #### y : [T](dot.html#typeparam-T) The second vector. #### x : [vector](../types/vector/index.html)\<[T](../types/vector/index.html#typeparam-T), [N](../types/vector/index.html#decl-N)\> The first vector. #### y : [vector](../types/vector/index.html)\<[T](../types/vector/index.html#typeparam-T), [N](../types/vector/index.html#decl-N)\> The second vector. ## Return value The dot product of x and y. ## Remarks When x and y are scalars, this function is equivalent to x*y. ## 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. #### llvm Available in all stages.