bitselect

Each bit of result is corresponding bit of a if corresponding bit of c is 0.

gentype bitselect ( gentype a,
  gentype b,
  gentype c)

halfn bitselect (halfn a, halfn b, halfn c) // if half extension enabled

Description

Each bit of result is corresponding bit of a if corresponding bit of c is 0. Otherwise it is the corresponding bit of b.

Notes

If an implementation extends this specification to support IEEE-754 flags or exceptions, then all built-in relational functions shall proceed without raising the invalid floating-point exception when one or more of the operands are NaNs.

The built-in relational functions are extended with cl_khr_fp16 to include appropriate versions of functions that take half, and half{2|3|4|8|16} as arguments and return values.

The argment type gentype can be char, charn,uchar, ucharn, short, shortn, ushort, ushortn, int, intn, uint, uintn, long, longn, ulong, ulongn, float, floatn, double, and doublen.

Specification

OpenCL Specification

Also see

Relational Functions

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.