wsemi/src/cint.mjs

A support package for web developer.

import round from 'lodash/round'
import isnum from './isnum.mjs'
import cdbl from './cdbl.mjs'


/**
 * 數字或字串四捨五入轉整數
 * 若輸入非數字則回傳0
 *
 * Unit Test: {@link https://github.com/yuda-lyu/wsemi/blob/master/test/cint.test.mjs Github}
 * @memberOf wsemi
 * @param {Number|String} v 輸入數字或字串
 * @returns {Integer} 回傳四捨五入後整數
 * @example
 *
 * console.log(cint('1.5'))
 * // => 2
 *
 * console.log(cint('-1.5'))
 * // => -1
 *
 */
function cint(v) {

    //check
    if (!isnum(v)) {
        return 0
    }

    v = cdbl(v)

    let r = round(v)

    //check -0
    if (String(r) === '0') {
        return 0
    }

    return r
}


export default cint