
Section 8.5 Informal sketch for computing an exact dot product 267
available before the multiplication of the mantissas is finished. If the accumulation of
the product then produces a carry, the incremented/decremented carry word is written
back into the CR, otherwise nothing is changed.
This very fast carry resolution technique could be used in particular for the com-
putation of short scalar products which occur, for instance, in the computation of the
real and imaginary parts of the product of two complex floating-point numbers. A
long scalar product, however, is usually performed in a pipeline. Then, during the
multiplication, the previous product ...