Geometric Built-In Functions

Click an item in the table below for details about that function.

cross Cross product
dot Dot product
distance Vector distance
length Vector length
normalize Normal vector length 1
fast_distance Vector distance
fast_length Vector length
fast_normalize Normal vector length 1


Built-in geometric functions operate component-wise and the description is per-component. The generic type name gentype indicates that the function can take float, float2, or float4, float8 as the type for the arguments.

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.

The built-in geometric functions are extended with cl_khr_fp64 to include appropriate versions of functions that take double, and double{2|4|8|16} as arguments and return values. They are also extended with with cl_khr_fp16 to include appropriate versions of functions that take half, and half{2|4|8|16} as arguments and return values.


OpenCL Specification

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