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Triangular Parts
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BLAS matrix triangles.
bash
npm install @stdlib/blas-base-matrix-triangles
javascript
var matrixTriangles = require( '@stdlib/blas-base-matrix-triangles' );
#### matrixTriangles()
Returns a list of BLAS matrix triangles.
javascript
var out = matrixTriangles();
// e.g., returns [ 'upper', 'lower' ]
The output array contains the following types:
- upper: upper triangular part of a matrix.
- lower: lower triangular part of a matrix.
javascript
var contains = require( '@stdlib/array-base-assert-contains' ).factory;
var matrixTriangles = require( '@stdlib/blas-base-matrix-triangles' );
var isMatrixTriangle = contains( matrixTriangles() );
var bool = isMatrixTriangle( 'lower' );
// returns true
bool = isMatrixTriangle( 'upper' );
// returns true
bool = isMatrixTriangle( 'beep' );
// returns false
c
#include "stdlib/blas/base/matrix_triangles.h"
#### STDLIB_BLAS_MATRIX_TRIANGLE
An enumeration of BLAS matrix triangles with the following fields:
- STDLIB_BLAS_UPPER: upper triangular part of a matrix.
- STDLIB_BLAS_LOWER: lower triangular part of a matrix.
c
#include "stdlib/blas/base/matrix_triangles.h"
const enum STDLIB_BLAS_MATRIX_TRIANGLE v = STDLIB_BLAS_LOWER;
