Detect underflow

Diagnostic action to take when fixed-point constant underflow occurs

Model Configuration Pane: Diagnostics / Type Conversion

Description

The Detect underflow parameter specifies the diagnostic action to take when a fixed-point constant underflow occurs during simulation.

This parameter requires a Fixed-Point Designer™ license.

none (default) | warning | error

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.

Parameter:FixptConstUnderflowMsg

Value: 'none' | 'warning' | 'error'

Default: 'none'

Introduced in R2009b