NAME¶

vec_step - Takes a built-in scalar or vector data type argument and returns an integer value representing the number of elements in the scalar or vector.

¶

int vec_step(gentypen a);

int vec_step(char3 a);

int vec_step(uchar3 a);

int vec_step(short3 a);

int vec_step(ushort3 a);

int vec_step(half3 a);

int vec_step(int3 a);

int vec_step(uint3 a);

int vec_step(long3 a);

int vec_step(ulong3 a);

int vec_step(float3 a);

int vec_step(double3 a);

int vec_step(type);

DESCRIPTION¶

The vec_step built-in function takes a built-in scalar or vector data type argument and returns an integer value representing the number of elements in the scalar or vector.

For all scalar types, vec_step returns 1.

The vec_step built-in functions that take a 3-component vector return 4.

vec_step may also take a pure type as an argument, e.g. vec_step(float2)

We use the generic type name gentypen (or gentypem) to indicate the built-in data types char{2|4|8|16}, uchar{2|4|8|16}, short{2|4|8|16}, ushort{2|4|8|16}, int{2|4|8|16}, uint{2|4|8|16}, long{2|4|8|16}, ulong{2|4|8|16}, or float{2|4|8|16} as the type for the arguments unless otherwise stated. We use the generic name ugentypen to indicate the built-in unsigned integer data types. If the double is supported, then gentypen (or gentypem) also indicate the built-in data types double{2|4|8|16}.

The generic type name gentypen (or gentypem) may indicate the data type half{2|4|8|16} if the cl_khr_fp16(3clc) extension is supported.

SPECIFICATION¶

OpenCL Specification[1]

SEE ALSO¶

miscVectorFunctions(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