A method and computer program product for parasitic extraction from a
previously calculated capacitance solution include steps of: (a)
receiving as input a design database for an integrated circuit design;
(b) receiving as input a first set of operating conditions and a second
set of operating conditions for the integrated circuit design; (c)
calculating a first resistance solution and a single capacitance solution
from the design database and the first set of operating conditions; (d)
performing a parasitic extraction of the first resistance solution and
the single capacitance solution to generate a first set of parasitic
values; (e) calculating a second resistance solution from the design
database and the second set of operating conditions; (f) performing a
parasitic extraction of the second resistance solution and the single
capacitance solution to generate a second set of parasitic values; and
(g) generating as output the first set of parasitic values and the second
set of parasitic values.