check_extensions

check_extensions 
-lpp1 s_layerlpp 
-lpp2 s_layerlpp 
[ -output_lpp s_lpp ] 
[ -region {f_xlo f_ylo f_xhi f_yhi} ] 
[ -annotate [all | none | dim | rect] ] 
[ -annotation_limit i_count ] 
[ -clear_annotations ] 
[ -top_level_only ] 
[ -error_limit i_count ] 
[ -silent | -verbose ] 
[ -trim_corners ] 
[ -min_bound_extent [f_userunit] ] 
[ -min_extent1 [f_userunit] ] 
[ -max_extent1 [f_userunit] ] 
[ -min_extent2 [f_userunit] ] 
[ -max_extent2 [f_userunit] ] 
[ -coincident_allowed1 [ true | false ] ] 
[ -coincident_allowed2 [ true | false ] ] 
[ -subtotals [ true | false ] ]

Description

Checks enclosures by measuring the distance between the outside edge of one shape and the inside edge of another shape, or between the outside edge of a shape and the PRBoundary. Specify the appropriate argument for the check that you want to perform (max_extent1, max_extent2, min_extent1, min_extent2, min_bound_extent).

Arguments

`-annotate [all \| none \| dim \| rect]`
	Specifies the annotations to use to mark violations.
	`all`	(Default) Creates rectangle and dimension annotations where violations occur.
	`none`	Prevents annotations from being created.
	`dim`	Creates only dimension annotations to show measurements where violations occur.
	`rect`	Creates only rectangle annotations where violations occur.
	The annotations are added to the `annotation:violation` purpose of the given layers and are listed by layer under Minimum Extension or Maximum Extension in the Violations page of the Annotation Browser.
`-annotation_limit` i_count
	Specifies the maximum number of violations to create annotations for. By default, annotations are created for up to 1000 violations. Specify `-annotation_limit -1` to choose no limit.
`-clear_annotations`	Removes existing violation annotations of the same check type and input layers before performing this check. If not specified, existing violations are not cleared.
`-coincident_allowed1` [ true \| false ]
	When set to `true`, allows coincident edges when checking the layer purpose given by `-lpp1` extending beyond the layer purpose given by `-lpp2`. Default is true,
`-coincident_allowed2` [ true \| false ]
	When set to `true`, allows coincident edges when checking the layer purpose given by `-lpp2` extending beyond the layer purpose given by `-lpp1`.
`-error_limit` i_count	Specifies the maximum number of errors for each of `minExtension` and `maxExtension` to detect before stopping.
`-lpp1` s_layerlpp	Checks shapes on this layer (optionally restricted to a specified purpose). Defaults to the extended layer.
`-lpp2` s_layerlpp	Checks shapes on this layer (optionally restricted to a specified purpose). Defaults to the unextended layer.
`-max_extent1` [f_userunit]
	Checks the maximum extension rule of the layer purpose given by `-lpp1` beyond the layer purpose given by `-lpp2` be. If a value is given, it is used for the check instead of the `maxExtension` constraint.
`-max_extent2` [f_userunit]
	Checks the maximum extension rule of the layer purpose given by `-lpp2` beyond the layer purpose given by `-lpp1` be. If a value is given, it is used for the check instead of the `maxExtension` constraint.
`-min_bound_extent` [f_userunit]
	Checks the minimum extension rule of the layer purpose given by `-lpp1` beyond the PRBoundary. If a value is given, it is used for the check instead of the `minBoundaryExtension` constraint.
`-min_extent1` [f_userunit]
	Checks the minimum extension rule of the layer purpose given by `-lpp1` beyond the layer purpose given by `-lpp2` be. If a value is given, it is used for the check instead of the `minExtension` constraint.
`-min_extent2` [f_userunit]
	Checks the minimum extension rule of the layer purpose given by `-lpp2` beyond the layer purpose given by `-lpp1` be. If a value is given, it is used for the check instead of the `minExtension` constraint.
`-output_lpp` s_lpp	Adds violating shapes to the specified output layer purpose.
`-region` {f_xlo f_ylo f_xhi f_yhi}
	Specifies the boundary points for the area to check. If not specified, the entire design in the active artwork window is checked.
`-silent`	Turns off detailed messages during checking.
`-subtotals [ true \| false ]`
	When set to `true`, outputs a Tcl list with violation counts reported separately (refer to Processing Tcl Lists) in this order: `min_extent1`, `max_extent1`, `min_extent2`, and `max_extent2`. By default, the return value is the total number of violations found.
`-top_level_only`	Specifies that only top-level shapes should be checked (against all levels). By default, all shapes are checked. Cell-to-cell placement errors will not be caught if this flag is set.
`-trim_corners`	Specifies that corners be trimmed for checking.
`-verbose`	Outputs a message for each error found during the check.

Value Returned

i_count	Indicates the number of extension check failures found for the given criteria.
i_min_extent1_errors i_max_extent1_errors i_min_extent2_errors i_max_extent2_errors	Tcl list with the number of `min_extent1`, `max_extent1`, `min_extent2`, and `max_extent2` violations found. This is the output format when `-subtotals` is given.
`-1`	The command did not run due to a syntax error or a missing required argument.

Examples

The following command reports occurrences of Metal4 shapes extending less than 0.05 beyond Metal3 shapes.

check_extensions -lpp1 Metal4 -lpp2 Metal3 -min_extent1 0.05

Virtuoso Space-based Router Command Reference
Product Version IC23.1, September 2023

check_extensions

Description

Arguments

Value Returned

Examples

Related Topics

Virtuoso Space-based Router Command ReferenceProduct Version IC23.1, September 2023

check_extensions

Description

Arguments

Value Returned

Examples

Related Topics

Virtuoso Space-based Router Command Reference
Product Version IC23.1, September 2023