Tests if arguments are unordered.
#include <math.h> int isunordered (x, y) real-floating x; real-floating y;
The isunordered macro determines whether its arguments are unordered.
| x | Specifies the first value in the order. |
| y | Specifies the second value in the order. |
Upon successful completion, the isunordered macro returns 1 if its arguments are unordered, and 0 otherwise.
If x or y is NaN, 0 is returned.
isgreater Macro, isgreaterequal Subroutine, isless Macro, islessequal Macro, and islessgreater Macro.
math.h in AIX 5L Version 5.2 Files Reference.