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# Minimum Data Type

> Determine the minimum ndarray [data type][@stdlib/ndarray/dtypes] for storing a provided signed integer value.

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## Usage

```javascript
var minSignedIntegerDataType = require( '@stdlib/ndarray/base/min-signed-integer-dtype' );
```

#### minSignedIntegerDataType( value )

Returns the minimum ndarray [data type][@stdlib/ndarray/dtypes] for storing a provided signed integer value.

```javascript
var dt = minSignedIntegerDataType( 9999 );
// returns 'int16'

dt = minSignedIntegerDataType( -3 );
// returns 'int8'

dt = minSignedIntegerDataType( 3 );
// returns 'int8'

dt = minSignedIntegerDataType( 1e100 );
// returns 'float64'
```

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## Notes

-   Once a provided integer value exceeds the maximum values of all supported signed integer [data types][@stdlib/ndarray/dtypes], the function defaults to returning `'float64'`.

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## Examples

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```javascript
var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
var exp2 = require( '@stdlib/math/base/special/exp2' );
var minSignedIntegerDataType = require( '@stdlib/ndarray/base/min-signed-integer-dtype' );

// Generate random powers:
var exp = discreteUniform( 100, 0, 40, {
    'dtype': 'generic'
});

// Determine the minimum data type for each generated value...
var v;
var i;
for ( i = 0; i < exp.length; i++ ) {
    v = exp2( exp[ i ] );
    console.log( 'min(%d) => %s', v, minSignedIntegerDataType( v ) );
}
```

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

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