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21 lines
739 B
JavaScript
21 lines
739 B
JavaScript
import { hexFixLength } from '../hex/fixLength.js';
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/**
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* @name numberToHex
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* @summary Creates a hex value from a number.
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* @description
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* `null`/`undefined`/`NaN` inputs returns an empty `0x` result. `number` input values return the actual bytes value converted to a `hex`. With `bitLength` set, it converts the number to the equivalent size.
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* @example
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* <BR>
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*
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* ```javascript
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* import { numberToHex } from '@pezkuwi/util';
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*
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* numberToHex(0x1234); // => '0x1234'
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* numberToHex(0x1234, 32); // => 0x00001234
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* ```
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*/
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export function numberToHex(value, bitLength = -1) {
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const hex = (!value || Number.isNaN(value) ? 0 : value).toString(16);
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return hexFixLength(hex.length % 2 ? `0${hex}` : hex, bitLength, true);
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}
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