Vector distance.

float fast_distance(float n p0,
                    float n p1)


Returns fast_length(p0 - p1).


General information about built-in geometric functions: Built-in geometric functions operate component-wise. The description is per-component. floatn is float, float2, float3, or float4 and doublen is double, double2, double3, or double4. The built-in geometric functions are implemented using the round to nearest even rounding mode.

The geometric functions can be implemented using contractions such as mad or fma.

Also see