IsTriangular

R2026b

Check if matrix is upper or lower triangular

• 

IsTriangular 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 / Matrix Operations

Description

The IsTriangular block determines if the input is an upper triangular or lower triangular matrix.

Ports

Input

Port_1 — Input matrix

matrix

Input matrix, specified as a matrix.

Data Types: single | double | half | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | Boolean | fixed point

Output

Port_2 — Upper triangular or lower triangular matrix

real scalar boolean

Upper triangular or lower triangular matrix, specified scalar, returned as a real scalar boolean.

Data Types: Boolean

Parameters

Mode — Whether matrix is upper triangular or lower triangular

Upper (default) | Lower

Identify the matrix as Upper or Lower.

Programmatic Use

Block Parameter: Mode

Type: character vector

Values: 'Upper' | 'Lower'

Default: 'Upper'

Block Characteristics

Data Types	Boolean | double | fixed point | half | integer | single
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/Matrix Operations/IsTriangular"

Example: add_block("simulink/Matrix Operations/IsTriangular","myModel/myBlock",MakeNameUnique="on")

Extended Capabilities

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

Version History

Introduced in R2021b