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

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Minimum Data Type

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

Usage

import minSignedIntegerDataType from 'https://cdn.jsdelivr.net/gh/stdlib-js/array-base-min-signed-integer-dtype@esm/index.mjs';

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

<!DOCTYPE html>
<html lang="en">
<body>
<script type="module">

import discreteUniform from 'https://cdn.jsdelivr.net/gh/stdlib-js/random-array-discrete-uniform@esm/index.mjs';
import exp2 from 'https://cdn.jsdelivr.net/gh/stdlib-js/math-base-special-exp2@esm/index.mjs';
import minSignedIntegerDataType from 'https://cdn.jsdelivr.net/gh/stdlib-js/array-base-min-signed-integer-dtype@esm/index.mjs';

// 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 ) );
}

</script>
</body>
</html>

Notice

This package is part of stdlib, a standard library 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.

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License

See LICENSE.

Copyright

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