Return the single letter character abbreviation for an underlying array data type.
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> Return the single letter abbreviation for an underlying [array data type][@stdlib/ndarray/dtypes].
``bash`
npm install @stdlib/ndarray-base-dtype-char
`javascript`
var dtypeChar = require( '@stdlib/ndarray-base-dtype-char' );
#### dtypeChar( \[dtype] )
Returns the single letter character abbreviation for an underlying [array data type][@stdlib/ndarray/dtypes].
`javascript
var ch = dtypeChar( 'float64' );
// returns 'd'
ch = dtypeChar( 'generic' );
// returns 'o'
`
If provided an unknown or unsupported data type, the function returns null.
`javascript`
var ch = dtypeChar( 'foobar' );
// returns null
If not provided a [data type][@stdlib/ndarray/dtypes] value, the function returns an object mapping [data type][@stdlib/ndarray/dtypes] strings to single letter character abbreviations.
`javascript`
var obj = dtypeChar();
// returns {...}
`javascript
var logEachMap = require( '@stdlib/console-log-each-map' );
var dtypeChar = require( '@stdlib/ndarray-base-dtype-char' );
var dtypes = [
'float64',
'float32',
'int8',
'uint8',
'uint8c',
'int16',
'uint16',
'int32',
'uint32',
'binary',
'generic',
'foobar'
];
logEachMap( '%s => %s', dtypes, dtypeChar );
`
*
This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].
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---
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Copyright © 2016-2026. The Stdlib [Authors][stdlib-authors].
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