Determine whether one floating-point number is less than or greater than another
#include <math.h> #define islessgreater( x, y ) ...
The islessgreater() macro determines whether x is less than or greater than y. It's the same as (x) <= (y) || (x) >= (y) but doesn't raise the invalid floating-point exception if x and y are unordered, and it doesn't evaluate x and y twice.
The value of (x) <= (y) || (x) >= (y). If x or y is NaN, this function returns 0.
| Safety: | |
|---|---|
| Cancellation point | No |
| Interrupt handler | No |
| Signal handler | No |
| Thread | Yes |