check_constraint_def

check_constraint_def 
[-db {tech | design}]
[-group s_groupName]
[-constraint s_constraintName]

Description

Explicitly checks the constraint definitions in a group or all instances of a constraint, depending on the argument specified in the command.

The check is performed on constraint definition for the validity of values, interdependence of constraints, mandatory constraints (such as minSpacing, minWidth), correct group, scope of the constraint and other arguments, as defined by the requirements in a constraint.

Some examples of the checks that can be performed are as follows.

• Symmetry in table, such as in the minOppSpanSpacing constraint.
• minProximitySpacing and minProtrudedProximitySpacing are mutually exclusive constraints and cannot be specified together.
• Via constraints should only be specified on cut layers.
• MetalNodeAreaFactor are only specified on metal layers.

Arguments

-db {tech | design}	Specifies the database to search for the constraint group. Default: First design database and then technology database is searched.
-group
	Specifies the name of the constraint group to be checked.
-constraint
	Specifies the name of the constraint to be checked.

Examples

check_constraint_def constraintgroup1

Related Topics

set_constraint_def_check

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