Relational Built-In Functions

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

isequal	Compare of `x` == `y`.
isnotequal	Compare of `x` != `y`.
isgreater	Compare of `x` > `y`.
isgreaterequal	Compare of `x` >= `y`.
isless	Compare of `x` < `y`.
islessequal	Compare of `x` <= `y`.
islessgreater	Compare of (`x` < `y`) \|\| (`x` > `y`).
isfinite	Test for finite value.
isinf	Test for +ve or -ve infinity.
isnan	Test for a NaN.
isnormal	Test for a normal value.
isordered	Test if arguments are ordered.
isunordered	Test if arguments are unordered.
signbit	Test for sign bit.
any	1 if MSB in any component of `x` is set; else 0.
all	1 if MSB in all components of `x` is set; else 0.
bitselect	Each bit of result is corresponding bit of `a` if corresponding bit of `c` is 0.
select	For each component of a vector type, result[`i`] = if MSB of `c`[`i`] is set ? `b`[`i`] : `a`[`i`] For scalar type, result = `c` ? `b` : `a`.

Description

The relational and equality operators (<, <=, >, >=, !=, ==) can be used with scalar and vector built-in types and produce a scalar or vector signed integer result respectively.

The built-in relational functions can be used with built-in scalar or vector types as arguments and return a scalar or vector integer result. If an implementation extends this specification to support IEEE-754 flags or exceptions, then all built-in Relational 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_fp64 to include appropriate versions of functions that take double, and double{2|3|4|8|16} as arguments and return values. They are also 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 relational and equality operators (<, <=, >, >=, !=, ==) can be used with doublen vector types and shall produce a vector longn result.

Specification

OpenCL Specification

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