String Compare

R2026b

Compare two input strings

• 

String Compare block

To add a block to a model, double-click the canvas and start typing the block name. Then, select the block from the list.

Libraries:
Simulink / String

Description

String Compare compares two strings. To see if two strings are identical, use this block. You can specify if the match is case sensitive and how much of the string to compare.

Ports

Input

Port_1 — First string to compare

scalar

First string to compare, specified as a scalar.

Data Types: string

Port_2 — Second string to compare

scalar

Second string to compare, specified as a scalar.

Data Types: string

Output

Port_1 — True or false result

scalar

True or false result, specified as a scalar:

• 1 — Match.

• 0 — No match.

Data Types: Boolean

Parameters

Case sensitive — Case sensitivity for string comparison

on (default) | off

Case sensitivity for string comparison:

on

Consider string case when comparing strings.

off

Do not consider string case when comparing strings.

Programmatic Use

Block Parameter: CaseSensitive

Type: character vector

Values: 'on' | 'off'

Default: 'on'

Compare Option — Amount of characters to compare

Entire string (default) | First N characters

Amount of string to compare:

• Entire string — Compare both entire strings.

• First N characters — Compare the first N characters of both strings.

Dependencies

Setting this parameter to First N characters enables the Number of characters parameter.

Programmatic Use

Block Parameter: CompareOption

Type: character vector

Values: 'Entire string' | 'First N characters'

Default: 'Entire string'

Number of characters — Number of characters to compare

1 (default) | scalar

Number of characters to compare

Dependencies

This parameter is enabled when the Compare Option parameter is set to First N characters.

Programmatic Use

Block Parameter: CompareOption

Type: character vector

Values: scalar

Default: '1'

Block Characteristics

Data Types	Boolean | string
Direct Feedthrough	yes
Multidimensional Signals	no
Variable-Size Signals	no
Zero-Crossing Detection	no

Programmatic Use: Add Block

To add the block programmatically, use the add_block function with one of these library block paths as the source.

"simulink/String/String Compare"

Example: add_block("simulink/String/String Compare","myModel/myBlock",MakeNameUnique="on")

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Version History

Introduced in R2018a