sheetjs/packages/ssf/bits/60_number.js

function write_num_cm(type/*:string*/, fmt/*:string*/, val/*:number*/)/*:string*/{
	var idx = fmt.length - 1;
	while(fmt.charCodeAt(idx-1) === 44) --idx;
	return write_num(type, fmt.substr(0,idx), val / Math.pow(10,3*(fmt.length-idx)));
}
function write_num_exp(fmt/*:string*/, val/*:number*/)/*:string*/{
	var o/*:string*/;
	var idx = fmt.indexOf("E") - fmt.indexOf(".") - 1;
	if(fmt.match(/^#+0.0E\+0$/)) {
		if(val == 0) return "0.0E+0";
		else if(val < 0) return "-" + write_num_exp(fmt, -val);
		var period = fmt.indexOf("."); if(period === -1) period=fmt.indexOf('E');
		var ee = Math.floor(Math.log(val)*Math.LOG10E)%period;
		if(ee < 0) ee += period;
		o = (val/Math.pow(10,ee)).toPrecision(idx+1+(period+ee)%period);
		if(o.indexOf("e") === -1) {
			var fakee = Math.floor(Math.log(val)*Math.LOG10E);
			if(o.indexOf(".") === -1) o = o.charAt(0) + "." + o.substr(1) + "E+" + (fakee - o.length+ee);
			else o += "E+" + (fakee - ee);
			while(o.substr(0,2) === "0.") {
				o = o.charAt(0) + o.substr(2,period) + "." + o.substr(2+period);
				o = o.replace(/^0+([1-9])/,"$1").replace(/^0+\./,"0.");
			}
			o = o.replace(/\+-/,"-");
		}
		o = o.replace(/^([+-]?)(\d*)\.(\d*)[Ee]/,function($$,$1,$2,$3) { return $1 + $2 + $3.substr(0,(period+ee)%period) + "." + $3.substr(ee) + "E"; });
	} else o = val.toExponential(idx);
	if(fmt.match(/E\+00$/) && o.match(/e[+-]\d$/)) o = o.substr(0,o.length-1) + "0" + o.charAt(o.length-1);
	if(fmt.match(/E\-/) && o.match(/e\+/)) o = o.replace(/e\+/,"e");
	return o.replace("e","E");
}
var frac1 = /# (\?+)( ?)\/( ?)(\d+)/;
function write_num_f1(r/*:Array<string>*/, aval/*:number*/, sign/*:string*/)/*:string*/ {
	var den = parseInt(r[4],10), rr = Math.round(aval * den), base = Math.floor(rr/den);
	var myn = (rr - base*den), myd = den;
	return sign + (base === 0 ? "" : ""+base) + " " + (myn === 0 ? fill(" ", r[1].length + 1 + r[4].length) : pad_(myn,r[1].length) + r[2] + "/" + r[3] + pad0(myd,r[4].length));
}
function write_num_f2(r/*:Array<string>*/, aval/*:number*/, sign/*:string*/)/*:string*/ {
	return sign + (aval === 0 ? "" : ""+aval) + fill(" ", r[1].length + 2 + r[4].length);
}
var dec1 = /^#*0*\.([0#]+)/;
var closeparen = /\)[^)]*[0#]/;
var phone = /\(###\) ###\\?-####/;
function hashq(str/*:string*/)/*:string*/ {
	var o = "", cc;
	for(var i = 0; i != str.length; ++i) switch((cc=str.charCodeAt(i))) {
		case 35: break;
		case 63: o+= " "; break;
		case 48: o+= "0"; break;
		default: o+= String.fromCharCode(cc);
	}
	return o;
}
function rnd(val/*:number*/, d/*:number*/)/*:string*/ { var dd = Math.pow(10,d); return ""+(Math.round(val * dd)/dd); }
function dec(val/*:number*/, d/*:number*/)/*:number*/ {
	var _frac = val - Math.floor(val), dd = Math.pow(10,d);
	if (d < ('' + Math.round(_frac * dd)).length) return 0;
	return Math.round(_frac * dd);
}
function carry(val/*:number*/, d/*:number*/)/*:number*/ {
	if (d < ('' + Math.round((val-Math.floor(val))*Math.pow(10,d))).length) {
		return 1;
	}
	return 0;
}
function flr(val/*:number*/)/*:string*/ {
	if(val < 2147483647 && val > -2147483648) return ""+(val >= 0 ? (val|0) : (val-1|0));
	return ""+Math.floor(val);
}