Detect underflow

Specifies diagnostic action to take when a fixed-point constant underflow occurs during simulation.

Select the diagnostic action to take if Simulink^® software detects a 32-bit integer value was converted to a floating-point value.

Category: Diagnostics

Default: none

none: Simulink software takes no action.
warning: Simulink software displays a warning.
error: Simulink software terminates the simulation and displays an error message.

This diagnostic applies only to fixed-point constants (net slope and net bias).
Fixed-point constant underflow occurs when Simulink software encounters a fixed-point constant whose data type does not have enough precision to represent the ideal value of the constant because the ideal value is too small.
When fixed-point constant underflow occurs, casting the ideal value to the data type causes the value of the fixed-point constant to become zero, and therefore to differ from its ideal value.