Return true if the specified x is NaN and false otherwise. Note that this is equivalent to classify(x) == FP_NAN.
true
x
false
classify(x) == FP_NAN
Declared in <bdldfp_decimalutil.h>
<bdldfp_decimalutil.h>
static bool isNan(Decimal32 x);
true if x is NaN, and false otherwise