Normal vector length 1.

float n normalize(float n p)

double n normalize(double n p)
gentype normalize (gentype p)      // if half extension enabled


Returns a vector in the same direction as p but with a length of 1.


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.

If extended with cl_khr_fp16, generic type name gentype may indicate half and half{2|3|4} as arguments and return values.

Also see