isunordered

Test if arguments are unordered.

`int isunordered (`	float `x`,
	float `y)`

`intn isunordered (`	float`n` `x`,
	float`n` `y)`

`int isunordered (`	double `x`,
	double `y)`

`longn isunordered (`	double`n` `x`,
	double`n` `y)`

int isunordered (half x, half y) // if half extension enabled

shortn isunordered (halfn x, halfn y) // if half extension enabled

Description

Test if arguments are unordered. isunordered() takes arguments x and y, returning non-zero if x or y is NaN, and zero otherwise.

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 versions that take half, and half{2|3|4|8|16} as arguments.

The function returns a 0 if the specified relation is false and a 1 if the specified relation is true for scalar argument types. These functions shall return a 0 if the specified relation is false and a - 1 (i.e. all bits set) if the specified relation is true for vector argument types.

Specification

OpenCL Specification

Also see

Relational Functions

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