Minimum Data Type

Determine the minimum array data type for storing a provided signed integer value.

Installation

npm install @stdlib/array-base-min-signed-integer-dtype

Usage

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

minSignedIntegerDataType( value )

Returns the minimum array data type for storing a provided signed integer value.

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

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

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

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

Notes

• Once a provided integer value exceeds the maximum values of all supported signed integer data types, the function defaults to returning 'float64'.

Examples

var discreteUniform = require( '@stdlib/random-array-discrete-uniform' );
var exp2 = require( '@stdlib/math-base-special-exp2' );
var minSignedIntegerDataType = require( '@stdlib/array-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 ) );
}

Notice

This package is part of 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, see the main project repository.

Community

License

See LICENSE.

Copyright

Copyright © 2016-2024. The Stdlib Authors.