Provided by: opencl-1.2-man-doc_1.0~svn22836-1.1_all bug


       isunordered - Test if arguments are unordered.

       int isunordered(float x, float y);

       intn isunordered(floatn x, floatn y);

       int isunordered(double x, double y);

       longn isunordered(doublen x, doublen y);

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


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


       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(3clc) to include
       appropriate versions of functions that take half, and half{2|3|4|8|16} as arguments and
       return values.

       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.


       OpenCL Specification[1]




       The Khronos Group


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        1. OpenCL Specification
           page 264, section 6.12.6 - Relational Functions