This segment surpasses both logic synthesis, ASIC and IC implementation tools.
Timing closure is achieved when the whole chip meets the timing specification or constraints.
Just as static timing analysis is the tool of choice for verifying timing closure, formal verification is essential in verifying functional closure. It is faster than simulation, requires no vectors and is exhaustive so more bugs are caught earlier when they take less time to fix. For example, it is not helpful to know that 90 percent of a chip's timing has been verified but the remaining 10 percent is undetermined. In that respect, full-chip capacity of formal tools is also important to functional closure. Without it, a percentage of logic remains unverified that might not correctly interface with the rest of the chip.