selfSubtractDD method

DD selfSubtractDD(
  1. DD y
)

Subtracts the argument from the value of this. To prevent altering constants, this method must only be used on values known to be newly created.

@param y the addend @return this object, decreased by y

Implementation

DD selfSubtractDD(DD y) {
  if (isNaN()) return this;
  return selfAddHiLo(-y.hi, -y.lo);
}