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# char2dtype

> Return the [data type][@stdlib/ndarray/dtypes] string associated with a provided [single letter character abbreviation][@stdlib/ndarray/base/dtype-char].

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## Usage

```javascript
var char2dtype = require( '@stdlib/ndarray/base/char2dtype' );
```

#### char2dtype( \[ch] )

Returns the [data type][@stdlib/ndarray/dtypes] string associated with a provided [single letter character abbreviation][@stdlib/ndarray/base/dtype-char].

```javascript
var out = char2dtype( 'd' );
// returns 'float64'

out = char2dtype( 'i' );
// returns 'int32'
```

If provided an unknown or unsupported [single letter character abbreviation][@stdlib/ndarray/base/dtype-char], the function returns `null`.

```javascript
var out = char2dtype( '(' );
// returns null
```

If not provided a [data type][@stdlib/ndarray/dtypes] string, the function returns an object mapping [single letter character abbreviations][@stdlib/ndarray/base/dtype-char] to [data type][@stdlib/ndarray/dtypes] strings.

```javascript
var out = char2dtype();
// returns {...}
```

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</section>

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## Examples

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```javascript
var dtypeChar = require( '@stdlib/ndarray/base/dtype-char' );
var char2dtype = require( '@stdlib/ndarray/base/char2dtype' );

var chars;
var out;
var i;

chars = [
    dtypeChar( 'float64' ),
    dtypeChar( 'float32' ),
    dtypeChar( 'int8' ),
    dtypeChar( 'uint8' ),
    dtypeChar( 'uint8c' ),
    dtypeChar( 'int16' ),
    dtypeChar( 'uint16' ),
    dtypeChar( 'int32' ),
    dtypeChar( 'uint32' ),
    dtypeChar( 'binary' ),
    dtypeChar( 'generic' ),
    '('
];

for ( i = 0; i < chars.length; i++ ) {
    out = char2dtype( chars[ i ] );
    console.log( '%s => %s', chars[ i ], out );
}
```

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</section>

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[@stdlib/ndarray/dtypes]: https://github.com/stdlib-js/ndarray/tree/main/dtypes

[@stdlib/ndarray/base/dtype-char]: https://github.com/stdlib-js/ndarray/tree/main/base/dtype-char

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