message: complex: implement OpAssign for Complex<T>
diff: @@ -516,6 +516,88 @@ impl<T: Clone + Num> Div<Complex<T>> for Complex<T> {
  }
  }
  +// Op Assign
  +
  +mod opassign {
  + use std::ops::{AddAssign, SubAssign, MulAssign, DivAssign};
  +
  + use traits::Num;
  +
  + use Complex;
  +
  + impl<T: Clone + Num> AddAssign for Complex<T> {
  + fn add_assign(&mut self, other: Complex<T>) {
  + *self = self.clone() + other;
  + }
  + }
  +
  + impl<T: Clone + Num> SubAssign for Complex<T> {
  + fn sub_assign(&mut self, other: Complex<T>) {
  + *self = self.clone() - other;
  + }
  + }
  +
  + impl<T: Clone + Num> MulAssign for Complex<T> {
  + fn mul_assign(&mut self, other: Complex<T>) {
  + *self = self.clone() * other;
  + }
  + }
  +
  + impl<T: Clone + Num> DivAssign for Complex<T> {
  + fn div_assign(&mut self, other: Complex<T>) {
  + *self = self.clone() / other;
  + }
  + }
  +
  + impl<T: Num + AddAssign> AddAssign<T> for Complex<T> {
  + fn add_assign(&mut self, other: T) {
  + self.re += other;
  + }
  + }
  +
  + impl<T: Num + SubAssign> SubAssign<T> for Complex<T> {
  + fn sub_assign(&mut self, other: T) {
  + self.re -= other;
  + }
  + }
  +
  + impl<T: Clone + Num + MulAssign> MulAssign<T> for Complex<T> {
  + fn mul_assign(&mut self, other: T) {
  + self.re *= other.clone();
  + self.im *= other;
  + }
  + }
  +
  + impl<T: Clone + Num + DivAssign> DivAssign<T> for Complex<T> {
  + fn div_assign(&mut self, other: T) {
  + self.re /= other.clone();
  + self.im /= other;
  + }
  + }
  +
  + macro_rules! forward_op_assign {
  + (impl $imp:ident, $method:ident) => {
  + impl<'a, T: Clone + Num> $imp<&'a Complex<T>> for Complex<T> {
  + #[inline]
  + fn $method(&mut self, other: &Complex<T>) {
  + self.$method(other.clone())
  + }
  + }
  + impl<'a, T: Clone + Num + $imp> $imp<&'a T> for Complex<T> {
  + #[inline]
  + fn $method(&mut self, other: &T) {
  + self.$method(other.clone())
  + }
  + }
  + }
  + }
  +
  + forward_op_assign!(impl AddAssign, add_assign);
  + forward_op_assign!(impl SubAssign, sub_assign);
  + forward_op_assign!(impl MulAssign, mul_assign);
  + forward_op_assign!(impl DivAssign, div_assign);
  +}
  +
  impl<T: Clone + Num + Neg<Output = T>> Neg for Complex<T> {
  type Output = Complex<T>;
  