Specify the desired behavior for denormal results from arithmetic operations.
Denormal numbers are any non-zero numbers whose magnitude is smaller than the
smallest normalized floating-point number (see
realmin). Some hardware targets
flush denormal results from arithmetic operations to zero. You can emulate this
behavior by setting the parameter to
Flush To Zero
Denormal numbers are used in the results from arithmetic operations. This setting is supported by all simulation modes.
Flush To Zero (FTZ)
Emulates flush-to-zero behavior for denormal numbers. This setting flushes denormal results from arithmetic operations to zero. This setting is not supported during normal mode simulation.
In model reference systems, you can simulate a top-level model using gradual
underflow with any simulation mode. Models referenced by the top-level model can
simulate the flush-to-zero behavior only if the instance of the referenced model
uses an accelerated simulation mode and has the Simulation behavior for
denormal numbers parameter set to
Flush to zero
This parameter requires a Fixed-Point Designer™ license.