NAME

       length - Vector length.

       float length(floatn p);

       double length(doublen p);

       half length (gentype p)      // if half
       extension enabled

DESCRIPTION

       Returns the length of vector p, i.e., the square root of (p.x2 + p.y2 + ...)

NOTES

       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(3clc) or
       fma(3clc).

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

SPECIFICATION

       OpenCL Specification[1]

SEE ALSO

       geometricFunctions(3clc)

AUTHORS

       The Khronos Group

COPYRIGHT

       Copyright © 2007-2011 The Khronos Group Inc.
       Permission is hereby granted, free of charge, to any person obtaining a copy of this
       software and/or associated documentation files (the "Materials"), to deal in the Materials
       without restriction, including without limitation the rights to use, copy, modify, merge,
       publish, distribute, sublicense, and/or sell copies of the Materials, and to permit
       persons to whom the Materials are furnished to do so, subject to the condition that this
       copyright notice and permission notice shall be included in all copies or substantial
       portions of the Materials.

NOTES

        1. OpenCL Specification
           page 262, section 6.12.5 - Geometric Functions