x and y is a NaN, the expression (x < y) is certainly not true, but neither is its complement in the real number system, (x >= y). NaNs can undermine code of the form
if (x < y)
// consequence
else
// alternative, possibly written assuming x >= y
x less than y?" requires more than a No answer. Following the IEEE standards, CommonPoint platforms raise the invalid flag when the arguments to one of the built-in comparison operators <, <=, >=, and > are unordered.When you wish to avoid raising an unwanted flag, you can use one of the comparison macro functions: IsLess, IsLessEqual, IsGreaterEqual, IsGreater, IsUnordered, and IsLessGreater. They perform the specified comparison on their two arguments, returning a bool result but never raising a flag.
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