lzc_multiply
The product of two complex numbers.
long lzc_multiply( CLZComplex* leftOperand, CLZComplex* rightOperand, CLZComplex* targetNumber = nullptr );(a + bi)(c + di) is (ac − bd) + (ad + bc)i, each part worked from exact products and rounded once, in that target part's own rounding mode, so i × i is exactly −1.
Examples
| Call | Answer |
|---|---|
lzc_multiply( 1 + 2i, 3 + 4i ) | −5 + 10i |
lzc_multiply( 0 + 1i, 0 + 1i ) | −1 + 0i |
Each answer is what Addaptic printed for the call, at 36 places unless a setting is shown.
Returns
kNoError (0) when the answer is written. Otherwise an error code, with the answer flagged infinite or not-a-number; see Errors and flags.
See also
lzc_squareThe complex number times itself.lzc_divideThe quotient of two complex numbers, left over right.lz_multiplyThe product of two numbers.