Test if an input value is a BLAS diagonal type.
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> Test if an input value is a BLAS diagonal type.
``bash`
npm install @stdlib/blas-base-assert-is-diagonal-type
`javascript`
var isDiagonalType = require( '@stdlib/blas-base-assert-is-diagonal-type' );
#### isDiagonalType( value )
Tests if an input value is a BLAS diagonal type.
`javascript
var bool = isDiagonalType( 'unit' );
// returns true
bool = isDiagonalType( 'non-unit' );
// returns true
`
`javascript
var isDiagonalType = require( '@stdlib/blas-base-assert-is-diagonal-type' );
var bool = isDiagonalType( 'unit' );
// returns true
bool = isDiagonalType( 'non-unit' );
// returns true
bool = isDiagonalType( '' );
// returns false
bool = isDiagonalType( 'foo' );
// returns false
`
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