A library for math, conversion, arrays, objects and other miscellaneous functions/uses.

Installation

Download via NPM:

https://www.npmjs.com/package/mathf-js npm install mathf-js to install. and then add

<script src="<your_file_structure>/node_modules/mathf-js/src/functions/math.min.js"></script>

to your html and your set!

Clone via GITHUB:

Clone this repo and follow the npm instructions after intall.

CDN:

Place one of the following into your html file.

CDN to NPM

<script src="https://cdn.jsdelivr.net/npm/mathf-js/src/functions/math.min.js"></script>

CDN to GITHUB

<script src="https://cdn.rawgit.com/tjkSec/Mathf/d25f325f/math-js/src/functions/math.min.js"></script>

---

Documentation & Content

A sorted and cleaner version of the documentation can be found here. https://tjksec.github.io/Mathf/docs/ All functions and methods

• sqrd
• pwr
• toNotationStr
• toNotation
• fromNotation
• cm2ft
• ft2cm
• gall2litre
• litre2gall
• radians
• degrees
• PI
• isPwrTwo
• decimalToBin
• txtToAsc
• ascToTxt
• logBase
• E
• toFahrenheit
• toKelvin
• random
• seed
• parityArray
• median
• range
• mean
• parity
• toJSON
• add
• multiply
• expand
• aprox
• arrClampValue
• arrLock
• toObject
• flatten
• lose
• break
• isVacant
• isolate
• v
• k
• holdsKey
• holdsVal
• tally
• flip
• randomArr
• insert
• init
• app
• grabVal
• grabKey

Usage and Information

Mathf has no dependency's. It can be used by calling the object Mathf with your desired function and parameter. Here are some examples of each of the different methods...

sqrd

Squares the parameter.

Mathf.sqrd(8) // 64
Mathf.sqrd(2) // 4
Mathf.sqrd(100) // 10000

pwr

First parameter to the power of the second.

Mathf.pwr(2, 9) // 512
Mathf.pwr(7, 2) // 49
Mathf.pwr(13, 8) // 815730721

toNotationStr

[ STILL UNDER DEVELOPMENT ]

Will turn your given parameter into a scientific notation but will be in the form of a string. Note: The number between the parentheses is the power of the number beside it, for example 10(7) would be 10 to the power of 7.

Your parameter must be surrounded with quotes for this to work properly.

Mathf.toNotationStr("71312321") // 7.1312321 * 10(7)
Mathf.toNotationStr("0000973621") // 9.73621 * 10(-4)
Mathf.toNotationStr("888888") // 8.88888 * 10(5)

/* Known Issues */
Mathf.toNotationStr("10000") // will return incorrect value.
Mathf.toNotationStr("100001") // will also return incorrect value.

toNotation

This will only return the float of the parameter in scientific notation form, without including the tenth power required to revert it back to its original self.

Again, your parameter must be surrounded with quotes for this to work properly.

Mathf.toNotation("0000973621") // 9.73621
Mathf.toNotation("34324343223545645") // 3.4324343223545646
Mathf.toNotation("888888") // 8.88888

fromNotation

[ COMING SOON || FIXING BUGS ]

cm2ft

Converts parameter (cm) into (ft)

Mathf.cm2ft(10) // 0.32808400000000004
Mathf.cm2ft(30.48) // 1.000000032
Mathf.cm2ft(999) // 32.7755916

ft2cm

Converts parameter (ft) into (cm)

Mathf.ft2cm(10) // 304.8
Mathf.ft2cm(30.48) // 929.0304
Mathf.ft2cm(999) // 30449.52

gall2litre

Converts parameter (gallon) into (litre)

Mathf.gall2litre(10) // 37.8541
Mathf.gall2litre(30.48) // 115.3792968
Mathf.gall2litre(999) // 3781.6245900000004

litre2gall

Converts parameter (litre) into (gallon)

Mathf.litre2gall(10) // 2.6417200000000003
Mathf.litre2gall(30.48) // 8.051962560000002
Mathf.litre2gall(999) // 263.907828

radians

Converts parameter (degree) into (radian)

Mathf.radians(10) // 0.17453300000000002
Mathf.radians(30.48) // 0.531976584
Mathf.radians(90) // 1.5707970000000002

degree

Converts parameter (radian) into (degree)

Mathf.degree(10) // 572.958
Mathf.degree(30.48) // 1746.375984
Mathf.degree(90) // 5156.622

PI

Value of PI

Mathf.PI // 3.14159265359

clamp

Clamps a given parameter between a minimum and maximum int.

Mathf.clamp(8, 1, 5) // 5
Mathf.clamp(3, 1, 5) // 3
Mathf.clamp(-10, 1, 5) // 1

isPwrTwo

Checks if a parameter is a power of two, if it is, it will return true.

Mathf.isPwrTwo(2) // true
Mathf.isPwrTwo(16) // true
Mathf.isPwrTwo(1) // false

decimalToBin

Converts decimal to binary.

Mathf.decimalToBin(99) // 1100011
Mathf.decimalToBin(4543) // 1000110111111
Mathf.decimalToBin(19) // 10011

txtToAsc

Converts text to ascii. This will only convert letters, using numbers or symbols will not work.

Mathf.txtToAsc("Hello") // 72,101,108,108,111
Mathf.txtToAsc("Mathf is the best") // 77,97,116,104,102,32,105,115,32,116,104,101,32,98,101,115,116
Mathf.txtToAsc("dutyasvdtagwb") // 100,117,116,121,97,115,118,100,116,97,103,119,98

ascToTxt

Converts ascii to text.

Mathf.ascToTxt([72,101,108,108,111]) // Hello
Mathf.ascToTxt([77,97,116,104,102,32,105,115,32,116,104,101,32,98,101,115,116]) // Mathf is the best
Mathf.ascToTxt([100,117,116,121,97,115,118,100,116,97,103,119,98]) // dutyasvdtagwb

logBase

Get base (parameter) logarithm of (parameter). Logarithms in javascript arent always perfectly accurate but are only usually slightly off.

Mathf.logBase(10, 1000) // 2.9999999999999996 (Note: Would be 3 if js Logarithms were perfect)
Mathf.logBase(8, 3) //  0.5283208335737187
Mathf.logBase(9, 4) //  0.6309297535714574

E

The value of E.

Mathf.E // 2.7182818284590452353602875

toFahrenheit

Converts Celsius to Fahrenheit

Mathf.toFahrenheit(100) // 212
Mathf.toFahrenheit(70) // 158
Mathf.toFahrenheit(30) // 86

toKelvin

Converts Celsius to Kelvin

Mathf.toKelvin(100) // 373
Mathf.toKelvin(70) // 343
Mathf.toKelvin(30) // 303

random

Chooses a random number between parameter one and parameter two.

Mathf.random(1, 20) // 3
Mathf.random(1, 20) // 10
Mathf.random(10, 40) // 33

seed

Generates random seed of numbers with length set to given parameter.

Mathf.seed(2) // 74
Mathf.seed(10) // 4828821837
Mathf.seed(30) // 818258243146673822531264199559

parityArray

Returns true if the amount of items in an array is an equal number.

Mathf.parityArray([1,2,3) // false
Mathf.parityArray(["a","b") // true
Mathf.parityArray([1,2,3,4,5,6,7,8]) // true

median

Calculates the median of a numerical array.

Mathf.median([1,2,3,4,5]) // 3
Mathf.median([1,2,3,4,5,6]) // 3.5
Mathf.median([1,2,3]) // 2

range

Calculates the range of a numerical array.

Mathf.range([3,5,9,8,4]) // 5
Mathf.range([80,1,6,9,45,2,3]) // 79
Mathf.range([-80,3000,2,3,8,8343]) // 8423

avg

Calculates the arithmetic mean/average of a numerical array.

Mathf.avg([3,5,9,8,4]) // 5.8
Mathf.avg([100,-99,-3,2,4,8]) // 2
Mathf.avg([1,3,7,9,2,88]) // 18.333333333333332

parity

Returns true if a number is even and false if it isn't.

Mathf.parity(2) // true
Mathf.parity(7) // false
Mathf.parity(14) // true

toJSON

Converts array or object to JSON standards.

Mathf.toJSON({one: "two"}) // {"one":"two"}
Mathf.toJSON(['hello', 'hi']) // ["hello","hi"]
Mathf.toJSON(['1','2','3']) // ["1","2","3"]

add

Adds all numerical values in an array together.

Mathf.add([1,2,3]) // 6
Mathf.add([3,3,3]) // 9
Mathf.add([8,8,8,8]) // 32

multiply

Multiplies all numerical values in an array by each other.

Mathf.multiply([3,3,3]) // 27
Mathf.multiply([7,7]) // 49
Mathf.multiply([1,2,3,54,9]) // 2916

expand

Converts given integer into an array of 1's.

Mathf.expand(10) // [1,1,1,1,1,1,1,1,1,1]
Mathf.expand(5) // [1,1,1,1,1]
Mathf.expand(3) // [1,1,1]

aprox

Compares two numerical values to see if they are similar.

Mathf.aprox(1.9,1.2) // true
Mathf.aprox(2.9,1.2) // false
Mathf.aprox(2.111111,2.999999) // true

arrClampValue

Clamps the values of each numerical value in an array between (min) and (max).

Mathf.arrClampValue([1,2,3,4,5,6,7,8],3,6) // [3,3,3,4,5,6,6,6]
Mathf.arrClampValue([2,999,1001,1000,-30],0,999) // [2,999,999,999,0]
Mathf.arrClampValue([1,2,3,4,5],1,5) // [1,2,3,4,5]

arrLock

Returns all array items within the maximum limit given.

Mathf.arrLock([1,2,3,4,5,6,7,8],3) // [1,2,3]
Mathf.arrLock([99,88,342,-234,99,1,2,3,4,5], 4) // [99,88,342,-234]
Mathf.arrLock([9387432,78324893274,2398473298,234823732], 0) // []

toObject

Converts every two array items into an objects key and value. If the array is not equal there will not be a value for one of the keys so it will return null.

const newObj = Mathf.toObject(["Key0","Val0","Key1","Val1","Key2","Val2"]);

return newObj.Key0 // { Val0 }

const newObj = Mathf.toObject(["Hello","Bye"]);

return newObj.Hello // { Bye }

const newObj = Mathf.toObject(["Key0"]) // null

flatten

This will conjoin mulitple arrays within an array.

Mathf.flatten([[1,2,3,4],["one","two",3]]) // [1,2,3,4,"one","two",3]
Mathf.flatten([["hello"],[38127649]]) // ["hello",38127649]
Mathf.flatten([[10,11],[12,13],[19,20]]) // [10,11,12,13,19,20]

lose

This will remove the given key/s from an object.

/* We will create an object template to demonstrate use. */
function Employee(name, age, department) {
  this.name = name,
  this.age = age,
  this.department = department
};

/* We'll create default object... */
const original = new Employee("John",21,"Software Engineer");
const x = new Employee("John",21,"Software Engineer");

/* and our object with our key/s removed.. */
const flitered = Mathf.lose(x, "age", "name");

return `${original.age} | ${original.name} | ${original.department}` 
// 21 | John | Software Engineer

return `${flitered.age} | ${flitered.name} | ${flitered.department}` 
// undefined | undefined | Software Engineer

break

This will break an array into smaller arrays with the capacity of parameter.

Mathf.break([1,2,3,4,5,6,7], 2) // [ [1,2], [3,4], [5,6], [7] ] 
Mathf.break([1,2,3,4,5,6,7], 7) // [ [1,2,3,4,5,6,7] ] 
Mathf.break([1,2,3,4,5,6,-20], 4) // [ [1,2,3,4], [5,6,-20] ]

isVacant

This will return true if the array is empty

Mathf.isVacant([]) // true
Mathf.isVacant([1]) // false
Mathf.isVacant([{}] false

isOccupied

This will return true if the array is not empty

Mathf.isOccupied([]) // false
Mathf.isOccupied([1]) // true
Mathf.isOccupied([{}] true

isolate

This will remove any duplicates from an array

Mathf.isolate([1,1,1,1,1,2,3,4,55,5,5,5,5,5,5,5]) // [1,2,3,4,55,5]
Mathf.isolate(["a", "a", "b", "b"]) // [a,b]
Mathf.isolate(["a",1,"b",1,"c",1]) ["a",1,"b","c"]

v

This will return all values from an object and stores them inside an array.

Mathf.v({One:"O-N-E", Two:"T-W-O"}) // ["O-N-E", "T-W-O"]
Mathf.v({One:1, Two:2, Three:3, Four:4}) // [1,2,3,4]
Mathf.v({A: (sayhi) => {alert(sayhi)}, One:"Two", Three:3}) // ["(sayhi) => {alert(sayhi)}","Two",3]

k

This will return all keys from an object and stores them inside an array.

Mathf.v({One:"O-N-E", Two:"T-W-O"}) // ["One", "Two"]
Mathf.v({One:1, Two:2, Three:3, Four:4}) // ["One","Two","Three","Four"]
Mathf.v({A: (sayhi) => {alert(sayhi)}, One:"Two", Three:3}) // ["A","One","Three"]

holdsKey

This will return true if the given key exists within an object.

Mathf.holdsKey({One:1, Two:2}, "One") // true
Mathf.holdsKey({One:1, Two:2}, "Three") // false
Mathf.holdsKey({One:1, Two:2}, "2") // false

tally

This will return the amount of items within an array.

Mathf.tally([1,2,3,4]) // 4
Mathf.tally(["one","two","three"]) // 3
Mathf.tally([1,2,3,43,4,4,5,6554354353]) // 8

flip

This will reverse/flip an array and return it.

Mathf.flip([1,2,3,4,5,6]) // [6,5,4,3,2,1]
Mathf.flip(["one","two","three"]) // ["three", "two", "one"]
Mathf.flip([1,1,1,2,3,44,44,44]) // [44,44,44,3,2,1,1,1]

randomArr

This will pick a random array element and return it.

Mathf.randomArr([1,2,3,4,5,6]) // [1]
Mathf.randomArr([1,2,3,4,5,6]) // [5]
Mathf.randomArr(["one", "two", "three"]) // ["one"]

insert (arr, pos, item)

This will insert a new item into an array with its position as (parameter).

Mathf.insert([1,2,3,4,5], 3) // [1,2,3,"will be placed after given pos",4,5]
Mathf.insert([1,2,3,4,5], 10) // [1,2,3,4,5,10]
Mathf.insert(["one", "two"], 0, "zero") // ["zero", "one", "two"]

init (arr)

This returns the inital item in an array.

Mathf.init([1,2,3,4,5]) // [1]
Mathf.init([5,4,3,2,1]) // [5]
Mathf.init(["one", "two"]) // ["one"]

app (arr, item)

This will append a given item to the end of an array.

Mathf.app([1,2,3,4,5], 6) // [1,2,3,4,5,6]
Mathf.app(["one", "two"], "three") // ["one","two","three"]
Mathf.app([1,"a","b",2], "h e l l o") // [1,"a","b",2,"h e l l o"]

grabVal (obj, key)

This will return the value of the given key.

Mathf.grabVal({One:1, Two:2, Three:3}, "One") // 1
Mathf.grabVal({One:1, Two:2, Three:3}, "Two") // 2
Mathf.grabVal({One:1, Two:2, Three:3}, "Three") // 3

grabKey (obj, val)

This will return the key of a given value.

Mathf.grabKey({One:1, Two:2, Three:3}, 1) // One
Mathf.grabKey({One:1, Two:2, Three:3}, 2) // Two
Mathf.grabKey({One:1, Two:2, Three:3}, 3) // Three