Multiplier with binary sign extension to the multiplication of numbers signs or symptoms

摘要

The invention relates to the multipliers. / p & & p & in order to carry out a multiplication of the numbers with signs or symptoms, it provides a structure, taking account of the calls for warning of to expand the sign of the partial products carried out during the multiplication. A modulus of extension of the sign (xsto, xstl, etc..) Is made for each row of adders. This module develops, on the basis of the most significant bit x of the multiplicand, and a indicationtxc on the fact that this bit is a sign bit or not, signauxt1, u1, t2, u2, etc. Which are applied to the entrees of the last two additionneursa2, a21, etc. Each row. / p & & p & is avoid to add further adders for this sign extension.