cpp/numeric/complex/operator arith3

Implements the binary operators for complex arithmetic and for mixed complex/scalar arithmetic. Scalar arguments are treated as complex numbers with the real part equal to the argument and the imaginary part set to zero.

@1-3@ Returns the sum of its arguments. @4-6@ Returns the result of subtracting from. @7-9@ Multiplies its arguments. @10-12@ Divides by.

Return value
@1-3@ @4-6@ @7-9@ @10-12@