1.0.3 • Published 5 months ago
num7.js v1.0.3
num7 - SUPREME PRECISION GENERAL PURPOSE ARITHMETIC-LOGIC DECIMAL LIBRARY PACKAGE FOR JAVASCRIPT LANGUAGE
DESCRIPTION AND DOC
Numis a lightweight floating point numeric class for arbitrary precision results with always supreme precision.
Easy to use like school math and WITHOUT IEEE754 ISSUES or -0 FAILURES, it can be deployed
for web e-commerce developing, accounting apps and general math programs included financial ones.
Fairly portable to Python one (and vice-versa) also a Node.js system can work with almost num7 capability.
Installation num7 package
Using npm
To install
num7 packageusingnpm, enter the following:npm install num7.js //win npm install num7.js //linuxOk!
HOW TO USE (integer numeric strings (ex. '2.0') MUST BE SUFFIXED WITH .0):
--- CALCULATOR MODE ---
> num7 = require('num7.js'); Num = num7.Num; calc = num7.Num; //IMPORT num7 LIBRARY
ADDITION: > calc.add('-5.3', '2.1').toString() //new Num('-3.2')
SUBTRACTION: > calc.sub('-5.3', '2.1').toString() //new Num('-7.4')
MULTIPLICATION: > calc.mul('-5.3', '2.1').toString() //new Num('-11.13')
DIVISION: > calc.div('-5.3', '2.1').toString() //new Num('-2.52380952380952380952380952380952380952380952380952380952380952380952380952380952')
M+: > M = new calc('0.0'); M.Inc('3.0'); M.Inc('3.3'); M.Inc('3.7'); console.log(M.toString()) //10.0
M-: > M.Dec('5.0'); M.Dec('3.3'); M.Dec('1.5'); console.log(M.toString()) //0.2
MC: > M.Clear(); console.log(M.toString()) //0.0
INT DIV AND REM: > calc.divmod('5.0', '3.0').toString() //'1.0,2.0' => Array()
FLOAT DIV AND REM: > calc.divmod('5.2', '3.1').toString() //'1.0,2.1' => Array()
POWER: > calc.pow('-5.3', '2.0').toString() //new Num('28.09')
SQRT: > calc.sqrt('2.0').toString() //new Num('1.41421356237309504880168872420969807856967187537694807317667973799073247846210703')
ROOT_ith > calc.root_i('1.860867', 3).toString() //new Num('1.23')
ROUND: > calc.sqrt('2.0').Round(2).toString() //new Num('1.41')
ABSOLUTE VALUE > calc.abs('-3.0').toString() //new Num('3.0')
SUM: > cart = ['19.32','18.37','15.13']; calc.sum(cart).toString() //new Num('52.82')
MEAN: > cart = ['19.32','18.37','15.13']; calc.mean(cart).Round().toString() //new Num('17.61')
MIN: > cart = ['19.32','18.37','15.13']; calc.min(cart).toString() //new Num('15.13')
MAX: > cart = ['19.32','18.37','15.13']; calc.max(cart).toString() //new Num('19.32')
EXP: > calc.mul('-5.3e1024', '2.1e1024').Num2exp() //'-1.113e2049'
REPL: > a = new calc('0.1'); b = new calc('0.2'); calc.add(a, b).toString() //0.3CODING:
> num7 = require('num7.js'); Num = num7.Num; calc = num7.Num; //IMPORT num7 LIBRARY (=) assignment:
> a = new Num('3.0'); b = new Num('5.0'); c = new Num('0.0'); //
> console.log('a =', a.toString(), 'b =', b.toString(), 'c =', c.toString()) //a = 3.0 b = 5.0 c = 0.0 (+) adding:
> R = a.Add(b).Add(c); console.log(R.toString()) //8.0
> a = new Num('0.1'); b = new Num('0.2'); c = new Num('0.0'); console.log(a.Add(b).Add(c).toString()) //0.3 (-) subtracting:
> a = new Num('0.1'); b = new Num('0.2'); c = new Num('0.3');
> console.log(a.Add(b).Sub(c).toString()) //0.0
> R = new Num('-3.99').Sub(new Num('-5.20')).Sub(new Num('+3.01')); console.log(R.toString()) //-1.8 (*) multiplying:
> new Num('-3.99').Mul(new Num('-5.20')).Mul(new Num('+3.01')) //-3.99 * (-5.20) * (+3.01 ) = new Num('62.45148')(/) dividing (80 decimal digits default gets only for division operation):
> new Num('3.0').Div(new Num('5.7')) //3 : 5.7 = new Num('0.52631578947368421052631578947368421052631578947368421052631578947368421052631578') Division precision (ex. 128 decs) may be specified as parameter after numeric string as:
> new Num('3.0', 128).Div(new Num('5.7', 128)) //3 : 5.7 = new Num('0.52631578947368421052631578947368421052631578947368421052631578947368421052631578947368421052631578947368421052631578947368421052') (// % operators by divmod function) integer division and remainder:
> a = new Num('14.0'); b = new Num('4.0') //
> QR = Num.divmod(a, b); console.log('Quotient =', QR[0].toString(), 'Remainder =', QR[1].toString()) //Quotient = 3.0 Remainder = 2.0 (divmod function) floating division and remainder:
> a = new Num('10.123456789'); b = new Num('2.0') //
> QR = Num.divmod(a, b); console.log('Quotient =', QR[0].toString(), 'Remainder =', QR[1].toString()) //Quotient = 5.0 Remainder = 0.123456789 (sqrt) square root function:
> a = new Num('123_456_789.1234567890123456789'); root = a.Sqrt() // new Num('11111.11106611111096998611053449930232404576951925017079015206589094347963821409843324')
> console.log('result digits number Array =>', root.Len()) //result digits number Array => (5, 80) (**) power pow function:
> a = new Num('2.22123').Pow(64); console.log(a.toString()) //# 15204983311631674774944.65147209888660757554174463321311015807893679105748958794491681177995203669698667160837739445605536688871012507194541849848681968140805876570485027380472936734094801420552285940765338219588362327695177798251793912104057999943308320501195784173135380826413054938730768027747418766018606636039075568645106645889100039914241
> console.log(a.Len().toString()) //(23, 320) digits len Array
> console.log(new Num(Num.pi).toString()) //3.141592654
> console.log(Num.pow(new Num(Num.pi), 8).toString()) //Num('9488.531025982131642534428505085353941520356351078169077371202330414440366336') logic in, not in, is, is not, LT, LE, GT, GE, EQ, NE and relational operators (and, or, not).
(in):
> L = [new Num('0.1'), new Num('1.0'), new Num('5.5'), new Num('-3.0'), new Num('-2.9'), new Num('-3.0001'), new Num('2.2')]
> Num.in(L, new Num('-3.0001')) //trueNum.in(L, new Num('-3.00001')) //false new Num('-3.0001').In(L) //true
(not_in):
Num.not_in(L, new Num('-3.0001')) //false Num.not_in(L, new Num('-3.00001')) //true new Num('-3.0001').Not_in(L) //false
(is, is_not):
> M = new calc('0.0'); Num.is(new Num('0.0'), M) //falseM = new calc('0.0'); Num.is_not(M.Inc('0.1'), M) //false M; N = M; N.Dec('0.1'); Num.is(N, M) //true N.Is(M) //true
N.Is_not(M) //false
LT, LE, GT, GE, EQ, NE (< <= > >= == !=)
> a = new Num('0.0'); b = new Num('0.1'); c = new Num('-0.2') a.LT(b); a.LT(c); b.LT(c) //true false false a.LE(b); a.LE(c); b.LE(c) //true false false a.GT(b); a.GT(c); b.GT(c) //false true true a.GE(a); a.GE(c); b.GE(c) //true true true c.EQ(new Num('-2.0').Mul(b)); a.EQ(c.Add(b.Mul('2.0'))); a.NE(a.Add(b).Add(c)) //true true true a.And(b); a.Or(b); a.Not() //false true true a.And(b) ? true : false //false a.Or(b) ? true : false //true
(+ - unary operators)
> a = new Num('2.5521') //Num { type: 'Num', n2: '', n0: '2', n1: '5521', L_n0: 1, L_n1: 4, n: '2.5521', d: 80 }
> console.log(a.toString()); //2.5521
> console.log(a.Minus().toString()); //-2.5521
> console.log(a.Plus().toString()); //2.5521
> console.log(a.Invsign().toString()); //-2.5521
> console.log(a.Invsign().toString()); //2.5521bitwise operators code:
num7 = require('num7.js'); Num = num7.Num;
console.log('--- (&) AND ---')
op1 = new Num('3.0')
op2 = 5
console.log(${Num.int(op1).toString(2).padStart(8, '0')}, op1.toString()) //00000011 3.0
op1 = op1.Andb(op2) //AND
console.log(${Num.int(op2).toString(2).padStart(8, '0')}, op2) //00000101 5
console.log(${Num.int(op1).toString(2).padStart(8, '0')}, op1.toString()) //00000001 1
console.log('--- (|) OR ---')
op1 = new Num('3.0')
op2 = 5
console.log(`${Num.int(op1).toString(2).padStart(8, '0')}`, op1.toString()) //00000011 3.0
op1 = op1.Orb(op2) //OR
console.log(`${Num.int(op2).toString(2).padStart(8, '0')}`, op2) //00000101 5
console.log(`${Num.int(op1).toString(2).padStart(8, '0')}`, op1.toString()) //00000111 7
console.log('--- (^) XOR ---')
op1 = new Num('3.0')
op2 = 5
console.log(`${Num.int(op1).toString(2).padStart(8, '0')}`, op1.toString()) //00000011 3.0
op1 = op1.Xorb(op2) //XOR
console.log(`${Num.int(op2).toString(2).padStart(8, '0')}`, op2) //00000101 5
console.log(`${Num.int(op1).toString(2).padStart(8, '0')}`, op1.toString()) //00000110 6
console.log('--- (<<) LEFT SHIFT -X10 MULTIPLIER ---')
op1 = new Num('1.0')
op2 = 2
console.log(`${Num.int(op1).toString(2).padStart(8, '0')}`, op1.toString()) //00000001 1.0
op1 = op1.Shift(op2) //LEFT SHIFT -X10 MULTIPLIER
console.log(`${Num.int(op2).toString(2).padStart(8, '0')}`, op2) //00000010 2
console.log(`${Num.int(op1).toString(2).padStart(8, '0')}`, op1.toString()) //01100100 100.0
console.log('--- (>>) RIGHT SHIFT -X10 DIVIDER ---')
op1 = new Num('250.0')
op2 = -1
console.log(`${Num.int(op1).toString(2).padStart(8, '0')}`, op1.toString()) //11111010 250.0
op1 = op1.Shift(op2) //RIGHT SHIFT -X10 DIVIDER
console.log(`${op2}`) //-1 (decimal)
console.log(`${Num.int(op1).toString(2).padStart(8, '0')}`, op1.toString()) //00011001 25.0
console.log('--- (~) NOT ---')
op1 = new Num('10.0')
console.log(`${Num.int(op1).toString(2).padStart(8, '0')}`, op1.toString()) //00001010 10.0
op2 = op1.Notb() //(~) NOT
console.log(`${Num.int(op2).toString(2).padStart(8, '0')}`, op2.toString()) //00000101 5.0 On a given variable the following arithmetic methods are available:
//variable arithmetics
num7 = require('num7.js'); Num = num7.Num;
a = new Num('10.25')
console.log(a.toString()) //10.25
a.Inc() //increment (default) by one
console.log(a.toString()) //11.25
a.Dec(2) //decrement (optional) 2 units
console.log(a.toString()) //9.25
a.Incmul() //multiply (default) 10 times
console.log(a.toString()) //92.5
a.Decdiv(100) //x100 (optional) division
console.log(a.toString()) //0.925
a.Clear() //a variable set to zero
console.log(a.toString()) //0.0 EVEN ODD numbering methods:
num7 = require('num7.js'); Num = num7.Num;
a = new Num(6); b = new Num(3); c = new Num('3.14')
console.log(a, 'INTEGER =>', a.Is_numint(), 'EVEN =>', a.Is_numeven()) //6.0 INTEGER => true EVEN => true
console.log(b, 'INTEGER =>', b.Is_numint(), 'ODD =>', b.Is_numodd()) //3.0 INTEGER => true ODD => true
console.log(c, 'FLOAT =>', c.Is_numfloat()) //3.14 FLOAT => true Advanced logic programming snippet
LOOP EXAMPLE >
num7 = require('num7.js'); Num = num7.Num;
i = new Num(0)
while (i.LT(new Num('1.0'))) {
i.Inc('0.1') //i += Num('0.1')
if (i.LE(new Num('0.5'))) continue
console.log(i.toString()) //0.6, 0.7, 0.8, 0.9, 1.0
}
while (i.Is_true()) {
i.Dec('0.1') //i -= Num('0.1')
if (i.GE(new Num('0.5'))) continue
console.log(i.toString()) //0.4 0.3 0.2 0.1 0.0
} ROUNDING AND ACCOUNTING >
num7 = require('num7.js'); Num = num7.Num;
p = new Num('11.19') //PRICE -Toslink cable for soundbar
pd = Num.round(p.F_price_over(-7)) //PRICE DISCOUNTED 7%
d = Num.round(p.Sub(pd)) //DISCOUNT
p_noTAX = Num.round(p.F_price_spinoff(22)) //ITEM COST WITHOUT TAX 22%
TAX = Num.round(p.Sub(p_noTAX)) //TAX 22%
console.log('price=' + pd.toString() + ' discount=' + d.toString() + ' COST=' + p_noTAX.toString() + ' TAX=' + TAX.toString()) //price=10.41 discount=0.78 COST=9.17 TAX=2.02OUTPUT FORMATTING AND LOCALIZATION >
num7 = require('num7.js'); Num = num7.Num;
const userLang = navigator.language || navigator.userLanguage;
console.log(userLang); // e.g., 'it-IT' "en-US", "fr-FR"
//calculating banking loan
asset = new Num('100_000.0'); rate = new Num('6.5'); years = new Num('20.0')
monthly_payment = Num.f_fund_fr(asset, rate, years).Round()
const formatted_USD_it = new Intl.NumberFormat("en-US", {
style: 'currency',
currency: 'USD',
}).format(monthly_payment);
console.log(formatted_USD_it, ' (USD)'); //$756.30 (USD)
const formatted_EUR_it = new Intl.NumberFormat('it-IT', {
style: 'currency',
currency: 'EUR',
}).format(monthly_payment);
console.log(formatted_EUR_it, '(EUR)'); //756,30 € (EUR)ROUNDING TYPES >
num7 = require('num7.js'); Num = num7.Num;
//''' Num floor rounding '''
console.log(''.padStart(20, '-') + ' Num floor rounding')
n = new Num(Num.pi) // 3.141592654
console.log(n, n.Round_floor(2).toString()) // 3.14
n = new Num(Num.pi).Invsign() //-3.141592654
console.log(n, n.Round_floor(2).toString()) //-3.15
n = new Num(Num.pi).Sub(3) // 0.141592654
console.log(n, n.Round_floor(2).toString()) // 0.14
n = new Num(Num.pi).Invsign().Add(3) //-0.141592654
console.log(n, n.Round_floor(2).toString()) //-0.15
//''' Num ceil rounding '''
console.log(''.padStart(20, '-') + ' Num ceil rounding')
n = new Num(Num.pi) // 3.141592654
console.log(n, n.Round_ceil(2).toString()) // 3.15
n = new Num(Num.pi).Invsign() //-3.141592654
console.log(n, n.Round_ceil(2).toString())//-3.14
n = new Num(Num.pi).Sub(3) // 0.141592654
console.log(n, n.Round_ceil(2).toString()) // 0.15
n = new Num(Num.pi).Invsign().Add(3) //-0.141592654
console.log(n, n.Round_ceil(2).toString()) //-0.14
//''' Num standard rounding '''
console.log(''.padStart(20, '-') + ' Num standard rounding')
n = new Num(Num.pi) // 3.141592654
console.log(n, n.Round().toString()) // 3.14
n = new Num(Num.pi).Invsign() //-3.141592654
console.log(n, n.Round().toString()) //-3.14
n = new Num(Num.pi).Sub(3) // 0.141592654
console.log(n, n.Round(4).toString()) // 0.1416
n = new Num(Num.pi).Invsign().Add(3) //-0.141592654
console.log(n, n.Round(4).toString()) //-0.1416
//''' Num half even rounding '''
console.log(''.padStart(20, '-') + ' Num half to even rounding (statistic, zero symmetric)')
n = new Num(Num.pi).Round_floor(4) // 3.1415
console.log(n, n.Round_bank(3).toString()) // 3.142
n = new Num(Num.pi).Round_floor(4).Invsign() //-3.1415
console.log(n, n.Round_bank(3).toString()) //-3.142
n = new Num(Num.pi).Sub(3).Round_floor(8) // 0.14159265
console.log(n, n.Round_bank(7).toString()) // 0.1415926
n = new Num(Num.pi).Round_floor(8).Invsign().Add(3) //-0.14159265
console.log(n, n.Round_bank(7).toString()) //-0.1415926 PERFORMANCE EVALUATION AND SQUARENESS >
num7 = require('num7.js'); Num = num7.Num
tic = performance.now() //Start Time
a = new Num('-1.123456789'+'e-100') //calculating division 10**100...
toc = performance.now() //Stop Time
T1 = ((toc - tic) / 1000).toFixed(6)
console.log(`a finished sec. ${T1}`) //a finished sec. 0.001129
tic = performance.now() //Start Time
b = new Num('-1.123456789').Shift(-100) //calculating division 10**100...
toc = performance.now() //Stop Time
T2 = ((toc - tic) / 1000).toFixed(6)
console.log(`b finished sec. ${T2}`) //b finished sec. 0.000739
R = Num.f_perf_time(T1, T2)
console.log('PCT=>', Num.round(R[0]).toString(), 'SCALE=>', Num.round(R[1]).toString(), 'SQUARENESS=>', a.EQ(b)) //PCT=> 52.77 SCALE=> 0.53 SQUARENESS=> true
//stock exchange assets performance
previous = new Num('26.96'); now = new Num('27.27')
var_pct = new Num(Num.f_perf(previous, now)).Round()
console.log(`${(var_pct > 0 ? '+' : '')}${var_pct.toFixed(2)}`) //+1.15SCIENTIFIC NOTATION AND HIGH PRECISION RESULTS >
num7 = require('num7.js'); Num = num7.Num
a = new Num('1_000_000_000_000_000_000_000.0') //standard notation
b = new Num('1.0e21') //scientific notation
SUM = a.Add(b) //SUM
ieee754 = a.Float() + b.Float() //
console.log('SUM == ieee754', SUM.Int() == Num.int(ieee754), ' SUM =>', SUM.Num2exp()) //SUM == ieee754 True SUM => 2.0e21
a = new Num('1_000_000_000_000_000_000_000.0') //standard notation
b = new Num('1.0e21') //scientific notation
MUL = a.Mul(b) //MUL
ieee754 = a.Float() * b.Float() //
console.log('MUL == ieee754', MUL.Int() == Num.int(ieee754), ' MUL =>', MUL.Num2exp()) //MUL == ieee754 True MUL => 1.0e42
a = '1.23456789'
b = '9.87654321'
MUL = new Num(a).Mul(new Num(b)) //MUL
ieee754 = Number.parseFloat(a) * Number.parseFloat(b)
console.log('MUL == ieee754', MUL == new Num(String(ieee754)), ' MUL =>', MUL.toString(), Number.parseFloat(a)*Number.parseFloat(b), '=> IEEE754 PRECISION FAILURE!') //MUL == ieee754 False MUL => 12.1932631112635269 12.193263111263525 => IEEE754 PRECISION FAILURE!
a = '1.23456789e320' //scientific notation
b = '9.87654321e320'
MUL = new Num(a).Mul(new Num(b)) //MUL
ieee754 = Number.parseFloat(a) * Number.parseFloat(b)
console.log('MUL == ieee754', MUL.toString() == String(ieee754), 'MUL =>', MUL.Num2exp(), Number.parseFloat(a)*Number.parseFloat(b), '=> IEEE754 Infinity FAILURE!') //MUL == ieee754 false MUL => 1.21932631112635269e641 Infinity => IEEE754 Infinity FAILURE!
a = '2.0e320' //scientific notation
b = '3.0e-320'
MUL = new Num(a).Mul(new Num(b)) //MUL
ieee754 = Number.parseFloat(a) * Number.parseFloat(b)
console.log('MUL == ieee754', MUL.toString() == ieee754.toString(), 'MUL =>', MUL.Num2exp(), ieee754, '=> IEEE754 Infinity FAILURE!') //MUL == ieee754 false MUL => 6.0e0 Infinity => IEEE754 Infinity FAILURE!
a = '1.0e200' //scientific notation
b = '5.0e1200'
T1 = new Num(a)
T2 = new Num(b)
DIV = T1.Div(T2, 1200) //DIV, ultra precision (over 80 digits default) floating point division must be specified!
ieee754 = Number.parseFloat(a) / (Number.parseFloat(b))
console.log('DIV == ieee754', DIV.toString() == ieee754.toString(), 'DIV =>', DIV.Num2exp(), ieee754, '=> IEEE754 precision FAILURE!') //DIV == ieee754 false DIV => 2.0e-1001 0 => IEEE754 precision FAILURE!FLOAT TO NUM CONVERSION LIST ARRAY >
num7 = require('num7.js'); Num = num7.Num
L = [1011, 0.0, 9.998412, 7.0, 0.123, -2.0123, 10, 6]
LN= Num.float2num_list(L)
for(let i of LN) console.log(i.n) //['1011.0', '0.0', '9.998412', '7.0', '0.123', '-2.0123', '10.0', '6.0']
for(let i of LN) console.log(i.toString()) //[Num('1011.0'), Num('0.0'), Num('9.998412'), Num('7.0'), Num('0.123'), Num('-2.0123'), Num('10.0'), Num('6.0')]SAVE NUMERIC LIST TO DISK FILE >
num7 = require('num7.js'); Num = num7.Num
L = [1011, 0.0, 9.998412, 7.0, 0.123, -2.0123, 10, 6]
LN= Num.float2num_list(L)
for(let i of LN) console.log(i.n) //['1011.0', '0.0', '9.998412', '7.0', '0.123', '-2.0123', '10.0', '6.0']
for(let i of LN) console.log(i.toString()) //[Num('1011.0'), Num('0.0'), Num('9.998412'), Num('7.0'), Num('0.123'), Num('-2.0123'), Num('10.0'), Num('6.0')]
Num.f_filewrite(LN)READ NUMERIC LIST ARRAY FROM DISK FILE (nums.txt default filename) >
A = Num.f_fileread(); console.log(A) //(8) ['1011.0', '0.0', '9.998412', '7.0', '0.123', '-2.0123', '10.0', '6.0']FAQ
Q. I usually try to add 0.1 to 0.2 in node with this code:
> console.log(0.1 + 0.2) /
and the result is:
> 0.30000000000000004 How instead can it gets exactly 0.3?
A. Using Num class >
num7 = require("num7.js"); Num = num7.Num; calc = num7.Num
console.log(new Num('0.1').Add(new Num('0.2')).toString()) //as calc.add('0.1', '0.2').toString()Q. I'll get an error when i usually type:
> new Num(0.1)
Uncaught Error: Num class constructor => number not valid: 0.1What is wrong?
A. You must use quotes or string conversion with built-in String function:
> num7 = require("num7.js"); Num = num7.Num; calc = num7.Num
> new Num('0.1') //Num('0.1')
> new Num(String(0.1)).toString() //'0.1' Q. How can i convert a regular float to a Decimal?
A. With Num.ieee754() method >
num7 = require("num7.js"); Num = num7.Num; calc = num7.Num
a=0.1; b=0.2;
c=a+b //0.30000000000000004 => PRECISION FAILURE!
an = Num.ieee754(a); console.log(an) //0.1000000000000000055511151231257827021181583404541015625
bn = Num.ieee754(b); console.log(bn) //0.2000000000000000111022302462515654042363166809082031250
cn = Num.ieee754(c);
console.log(cn, '=> PRECISION FAILURE!') //0.3000000000000000444089209850062616169452667236328125000 => PRECISION FAILURE!
T = calc.add(an, bn)
console.log(T.toString(), '=> OK.') //0.3000000000000000166533453693773481063544750213623046875 => OK. Q. I have two float variables in my code:
> a = 0.1; b = 0.2 How can i convert them in Num type?
A. With Num.float2num method (or directly with str() built-in function):
num7 = require("num7.js"); Num = num7.Num
a = 0.1; b = 0.2 //
an= Num.float2num(a); bn= Num.float2num(b) //an= new Num(String(a)); bn= new Num(String(b))
console.log(an.Add(bn).toString(), 'OK. VS', a+b, 'PRECISION FAILURE!') //0.3 OK. VS 0.30000000000000004 PRECISION FAILURE! Q. Can i do add or other math operations also with 10,000 digits after floating point?
A. Yes, you can by the following:
num7 = require("num7.js"); Num = num7.Num
console.log((new Num('1.123456789e-10_000').Add(new Num('3.987654321e-10_000'))).Num2exp()) //5.11111111e-10000
console.log((new Num('1.123456789e-10_000').Sub(new Num('3.987654321e-10_000'))).Num2exp()) //-2.864197532e-10000
console.log((new Num('1.123456789e-10_000').Mul(new Num('3.987654321e-10_000'))).Num2exp()) //4.479957319112635269e-20000
console.log((new Num('1.123456789e-10_000').Div(new Num('3.987654321e-10_000'))).toString()) //0.28173374584742497292307298769992856660154820877213142969420392746224704666420356Q. I must enter many integer variables in my code:
> a = new Num('123.0'); b = new Num('456.0'); c = new Num('789.0')Can i input them without quotes and suffix .0?
A. Yes, this the way:
> a = new Num(123); b = new Num(456); c = new Num(789)