operator - abstract method
Returns a Complex
whose value is
this - subtrahend
.
Uses the definitional formula
(a + bi) - (c + di) = (a-c) + (b-d)i
If either this
or subtrahend
has a NaN
value in either part,
nan is returned; otherwise infinite and NaN
values are
returned in the parts of the result according to the rules for
double arithmetic.
Implementation
Complex operator -(Object subtrahend);