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<!DOCTYPE html>
<html>
<title>HexCalc</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="theme-color" content="#3f51b5">
<meta name="mobile-web-app-capable" content="yes">
<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
<style>
.w3-col {padding:0px}
.w3-button, #keypad {width:100%}
.w3-fifth {width:19.9999%}
.w3-eighth {width:12.4999%}
.w3-select {background: none; color: white; border: none}
body {display:flex; flex-flow:column; height:100vh; max-width:600px; margin:auto}
#display {flex: 0 1 auto; display: flex; height:100%}
#disp-btns {display:flex; flex-direction: column; flex-grow:1}
#disp-btns>* {flex-grow:1}
#disp-input {flex-grow:100; display:flex; flex-direction: column; max-width:calc(100% - 80px)}
#keypad, #binpad {flex: 1 0 auto; font-size: 24px!important; justify-content: space-between;}
#binpad {flex-flow:column}
#keypad {display:flex}
#binpad {display:none}
.output {padding:8px; text-align:right; flex-grow:1; overflow:auto}
#preview {text-align:right;}
.w3-row {flex: 1 1 auto; display:flex; flex-flow:row}
.w3-col {display:flex; flex-flow:column; height:fit-content}
.w3-button {
flex: 1 1 auto;
border-radius: 50%;
width: 70px;
height: 70px;
color: white;
margin: auto;
}
.w3-button:active {
color: white!important;
background: #888!important;
}
button.w3-button:hover:not(:active) {
color:unset!important;
background: none!important;
}
button.w3-button.accent:hover:not(:active) {
background:#6ad045!important;
color: none!important;
}
button:focus {outline:0;}
button {-webkit-tap-highlight-color: transparent;}
.w3-button.accent {
background: #6ad045!important;
color: white!important;
}
.w3-button.spkey, .w3-button.opkey, .w3-button.pukey {
color: #6ad045;
}
.w3-indigo {
background: #6ad045!important;
}
#keypad>.w3-col{
margin: 20px;
border-radius: 38px;
}
#keypad>.w3-col.shaded{
background: rgba(0,0,0,0.2);
width: 140px;
margin-left: 0;
}
#keypad .w3-row.shaded{
background: rgba(0,0,0,0.2);
border-radius: 38px;
}
#keypad, #binpad, #history, #mode-row {
background: #777;
color: white
}
#mode-row {
border-radius: 20px 20px 0 0;
}
body {counter-reset: section 64}
#history{
display:none;
flex-direction: column;
height:100%;
overflow-y:auto;
}
#history .w3-btn {
text-align: right;
min-height: 50px;
}
#history .w3-btn:hover {
color: black;
background: whitesmoke;
}
#binpad .numkey::before {
counter-increment: section -1;
content: counter(section);
display: block;
font-size: 12px!important;
}
#color-row {color:white}
#color-row div {padding:8px; text-align: center}
/* Note this removes accesibility: */
input:focus,
select:focus,
textarea:focus,
button:focus {
outline: none;
}
.trig-mode .trig-off, .trig-on {display: none;}
.trig-mode .trig-on , .trig-off {display: block;}
.trig-mode .trig-hi {
background: #6ad045!important;
color: white!important;
}
.hide {display:none};
</style>
<body class="w3-indigo">
<div id="display">
<div id='disp-btns'>
<select id='mode-select' class="w3-select" onchange="updateMode(this.value)">
<option value='dec' class="w3-indigo">DEC</option>
<option value='hex' class="w3-indigo">HEX</option>
<option value='bin' class="w3-indigo">BIN</option>
</select>
<select id='notation' class="w3-select" onchange="updateNotation(this.value)"">
<option value="fixed" class="w3-indigo">NORM</option>
<option value="exponential" class="w3-indigo">EXP</option>
<option value="engineering" class="w3-indigo">ENG</option>
</select>
<select id='wordsize' class="w3-select" onchange="updateWordsize(this.value)"">
<option value="0" class="w3-indigo">FREE</option>
<option value="8" class="w3-indigo">INT8</option>
<option value="16" class="w3-indigo">INT16</option>
<option value="32" class="w3-indigo">INT32</option>
<option value="64" class="w3-indigo">INT64</option>
</select>
</div>
<div id="disp-input">
<div id="hist" class="output w3-large w3-bar w3-indigo"> </div>
<div id="disp" class="output w3-xxlarge w3-bar w3-indigo">0</div>
<div id="prev" class="output w3-large w3-bar w3-indigo"> </div>
</div>
</div>
<div id='mode-row'>
<div class="w3-row">
<div class="w3-col s4">
<button id='pad-num' class="w3-btn pad-sel">Num Pad</button>
</div>
<div class="w3-col s4">
<button id='pad-bin' class="w3-btn pad-sel">Bin Pad</button>
</div>
<div class="w3-col s4">
<button id='show-hist' class="w3-btn pad-sel">History</button>
</div>
</div>
</div>
<div id="binpad">
<div class="w3-row hide" id="color-row">
<div id="rgb" class="w3-col s3">RGB</div>
<div id="rgba" class="w3-col s3">RGBA</div>
<div id="bgr" class="w3-col s3">BGR</div>
<div id="bgra" class="w3-col s3">BGRA</div>
</div>
<div class="w3-row">
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
</div>
<div class="w3-row">
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
</div>
<div class="w3-row">
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
</div>
<div class="w3-row">
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
</div>
<div class="w3-row">
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
</div>
<div class="w3-row">
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
</div>
<div class="w3-row">
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
</div>
<div class="w3-row">
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
<div class="w3-col w3-eighth">
<button class="w3-button numkey padkey">1</button>
</div>
</div>
</div>
<div id="keypad" class="w3-row">
<div class="w3-col s7">
<div class="w3-row shaded">
<div class="w3-col s4">
<button class="w3-button pukey">0x</button>
</div>
<div class="w3-col s4">
<button class="w3-button pukey">0b</button>
</div>
<div class="w3-col s4">
<button id='trig-btn' class="w3-button spkey trig-hi">trig</button>
</div>
</div>
<div class="w3-row trig-off">
<div class="w3-col s4">
<button class="w3-button numkey hexkey">D</button>
</div>
<div class="w3-col s4">
<button class="w3-button numkey hexkey">E</button>
</div>
<div class="w3-col s4">
<button class="w3-button numkey hexkey">F</button>
</div>
</div>
<div class="w3-row trig-off">
<div class="w3-col s4">
<button class="w3-button numkey hexkey">A</button>
</div>
<div class="w3-col s4">
<button class="w3-button numkey hexkey">B</button>
</div>
<div class="w3-col s4">
<button class="w3-button numkey hexkey">C</button>
</div>
</div>
<div class="w3-row trig-on">
<div class="w3-col s4">
<button class="w3-button pukey">sin</button>
</div>
<div class="w3-col s4">
<button class="w3-button pukey">cos</button>
</div>
<div class="w3-col s4">
<button class="w3-button pukey">tan</button>
</div>
</div>
<div class="w3-row trig-on">
<div class="w3-col s4">
<button class="w3-button pukey">asin</button>
</div>
<div class="w3-col s4">
<button class="w3-button pukey">acos</button>
</div>
<div class="w3-col s4">
<button class="w3-button pukey">atan</button>
</div>
</div>
<div class="w3-row">
<div class="w3-col s4">
<button class="w3-button numkey hexkey deckey">7</button>
</div>
<div class="w3-col s4">
<button class="w3-button numkey hexkey deckey">8</button>
</div>
<div class="w3-col s4">
<button class="w3-button numkey hexkey deckey">9</button>
</div>
</div>
<div class="w3-row">
<div class="w3-col s4">
<button class="w3-button numkey hexkey deckey">4</button>
</div>
<div class="w3-col s4">
<button class="w3-button numkey hexkey deckey">5</button>
</div>
<div class="w3-col s4">
<button class="w3-button numkey hexkey deckey">6</button>
</div>
</div>
<div class="w3-row">
<div class="w3-col s4">
<button class="w3-button numkey hexkey deckey binkey">1</button>
</div>
<div class="w3-col s4">
<button class="w3-button numkey hexkey deckey">2</button>
</div>
<div class="w3-col s4">
<button class="w3-button numkey hexkey deckey">3</button>
</div>
</div>
<div class="w3-row">
<div class="w3-col s4">
<button class="w3-button spkey">Ans</button>
</div>
<div class="w3-col s4">
<button class="w3-button numkey hexkey deckey binkey">0</button>
</div>
<div class="w3-col s4">
<button class="w3-button numkey hexkey deckey binkey">.</button>
</div>
</div>
</div>
<div class="w3-col s5 shaded">
<div class="w3-row">
<div class="w3-col s12">
<button class="w3-button pukey">log</button>
</div>
<div class="w3-col s12">
<button class="w3-button pukey">ln</button>
</div>
</div>
<div class="w3-row">
<div class="w3-col s12">
<button class="w3-button pukey">e</button>
</div>
<div class="w3-col s12">
<button class="w3-button pukey">pi</button>
</div>
</div>
<div class="w3-row">
<div class="w3-col s12">
<button class="w3-button pukey">(</button>
</div>
<div class="w3-col s12">
<button class="w3-button pukey">)</button>
</div>
</div>
<div class="w3-row">
<div class="w3-col s12">
<button class="w3-button pukey">√</button>
</div>
<div class="w3-col s12">
<button class="w3-button opkey">^</button>
</div>
</div>
<div class="w3-row">
<div class="w3-col s12">
<button class="w3-button opkey">/</button>
</div>
<div class="w3-col s12">
<button class="w3-button opkey">*</button>
</div>
</div>
<div class="w3-row">
<div class="w3-col s12">
<button class="w3-button opkey">-</button>
</div>
<div class="w3-col s12">
<button class="w3-button opkey">+</button>
</div>
</div>
<div class="w3-row">
<div class="w3-col s6">
<button id='del-btn' data-long-press-delay="500" class="w3-button spkey">Del</button>
</div>
<div style='flex-grow:1'></div>
<div class="w3-col s6">
<button class="w3-button spkey accent">=</button>
</div>
</div>
</div>
</div>
<div id='history'>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/mathjs/9.5.0/math.js"
integrity="sha512-4aKxEISD4pbpzaB58OKEipeE+EyPiuftOmOapUUbPakIRWML5tK0u+FHZ22O/85EEgQjJNUOcldC/PcSDMWALQ=="
crossorigin="anonymous"
referrerpolicy="no-referrer">
</script>
<script src="long-press-event.min.js"></script>
<script>
ans=0
clear=true
mode='dec'
console.log(math.format(555, {"notation":'exponential'}))
document.getElementById('del-btn').addEventListener('long-press', (e) => {
console.log('long-press')
output = document.getElementById('disp')
preview = document.getElementById('prev')
output.innerText = "0"
clear = true;
preview.innerHTML = " "
})
// Number to string
function numString(num, radix) {
console.log("convert " + num + " to " + radix)
sep = '_'
dots = /(....)\B/g
seplen = 4
if (radix == 10) {
num = math.format(math.evaluate(num), {notation:notation})
int = num.replace(/\..*/,'')
frac = num.replace(/\-?\d*\./,'')
s = int.replace(/\B(?=(\d{3})+(?!\d))/g, ",")
if (num != int) {
s += '.' + frac
//s += '.' + frac.replace(/\B(?<=^(\d{3})+)/g, ",")
}
/*if (notation == 'engineering') {
s = s.replace(/e\+3$/,"k")
.replace(/e\+6$/,"M")
.replace(/e\+9$/,"G")
.replace(/e\-3$/,"m")
.replace(/e\-6$/,"u")
.replace(/e\-9$/,"n")
}*/
return s
} else {
ans = math.evaluate(num)
if (wordsize) {
console.log(wordsize, ans)
while (ans >= 2**(wordsize-1)) ans -= 2**wordsize
while (ans < -(2**(wordsize-1))) ans += 2**wordsize
}
num = math.format(ans, {notation:radix == 16 ? "hex" : "bin", wordSize:wordsize})
num = num.replace(/i.*/,'') // remove wordsize
prefix = num.replace(/(-?..).*/,"$1")
num = num.replace(/(-?..)/,'').toUpperCase()
console.log("DEBUG", prefix,num)
int = num.replace(/\..*/,'')
frac = num.replace(/.*\./,'')
isfrac = int != num
padding = mode == "hex" && wordsize == 8 ? 2 : 4
for(pad = 0; pad < int.length % padding; ++pad) int = '0'+int
s = prefix + int.replace(/(?!<=^)([A-F0-9])(?=([A-F0-9]{4})+(?![A-F0-9]))/g, "$1_")
if (isfrac) {
s += '.' + frac
//s += '.' + frac.replace(/\B(?<=^([A-F0-9]{4})+)/g, "_")
}
return s
return math.format(math.evaluate(num), {notation:mode}).replace(/(?!<=[bx])([A-F0-9])(?=([A-F0-9]{4})+(?![A-F0-9]))/g, "$1_")
}
}
function contrast(r,g,b) {
o = Math.round(((parseInt(r, 16) * 299) +
(parseInt(g, 16) * 587) +
(parseInt(b, 16) * 114)) / 1000);
return (o > 125) ? 'black' : 'white'
}
// Update color row
function updateColorRow() {
hexval = numString(ans, 16).replace(/0x/,'').replace(/_/g,"")
a = ("0000000" + hexval).slice(-8, -6)
b = ("00000" + hexval).slice(-6, -4)
c = ("000" + hexval).slice(-4, -2)
d = ("0" + hexval).slice(-2)
document.getElementById("rgb" ).style.backgroundColor = "#"+b+c+d
document.getElementById("rgba").style.backgroundColor = "#"+a+b+c
document.getElementById("bgr" ).style.backgroundColor = "#"+d+c+b
document.getElementById("bgra").style.backgroundColor = "#"+c+b+a
document.getElementById("rgb" ).style.color = contrast(b, c, d)
document.getElementById("rgba").style.color = contrast(a, b, c)
document.getElementById("bgr" ).style.color = contrast(d, c, b)
document.getElementById("bgra").style.color = contrast(c, b, a)
}
// Update the mode for keys only
function updateKeyMode(mode) {
console.log(`updateKeyMode(${mode})`)
buttons = document.getElementsByClassName('numkey')
for (i=0; i< buttons.length; i++) {
buttons[i].disabled = true
}
buttons = document.getElementsByClassName(mode+'key')
for (i=0; i< buttons.length; i++) {
buttons[i].disabled = false
}
buttons = document.getElementsByClassName('padkey')
for (i=0; i< buttons.length; i++) {
buttons[i].disabled = false
}
}
// update trig mode
function toggleTrigMode() {
trigMode = !trigMode;
document.body.classList.toggle('trig-mode')
}
// Update the mode
function updateMode(op) {
if (typeof(op) == 'string'){
mode = op
} else {
mode = op.id
}
document.getElementById('mode-select').value = mode
if (!clear) {
keyPress({key:'='})
} else {
decout = document.getElementById('disp')
decout.innerText = numString(ans, mode == 'dec' ? 10 : mode == 'hex' ? 16 : 2)
}
updateKeyMode('dec')
not = document.getElementById('notation').classList
wsz = document.getElementById('wordsize').classList
if (mode == 'dec') {
not.remove('hide')
wsz.add('hide')
} else {
not.add('hide')
wsz.remove('hide')
}
}
// Update the mode
function updatePadMode(op) {
binPad = op.id == 'pad-bin'
showhist = op.id == 'show-hist'
console.log(op.id, binPad, history)
if (binPad && ans < 0) {
ans += 2**32
}
binVal = numString(ans, 2)
document.getElementById("keypad").style.display = "none"
document.getElementById("binpad").style.display = "none"
document.getElementById("history").style.display = "none"
if (binPad) {
document.getElementById("binpad").style.display = "flex"
// update button values
ext = ("0".repeat(64) + binVal.replace(/_/g,"").replace(/0b/g,"")).slice(-64)
btns = document.getElementById("binpad").getElementsByClassName("numkey")
for (i = 0; i < btns.length; i++) {
btns[i].innerText = ext[i]
}
// update color row
//updateColorRow()
} else if (showhist) {
el = document.getElementById('history')
el.style.display = "flex"
el.scroll(0,9999)
} else {
document.getElementById("keypad").style.display = "flex"
}
}
function updateNotation(value) {
notation = value;
return
}
function updateWordsize(value) {
wordsize = parseInt(value);
if (!clear) {
keyPress({key:'='})
} else {
decout = document.getElementById('disp')
decout.innerText = numString(ans, mode == 'dec' ? 10 : mode == 'hex' ? 16 : 2)
}
// disable bin buttons
btns = document.getElementById("binpad").getElementsByClassName("numkey")
disable = wordsize ? btns.length - wordsize : 0
for (i = 0; i < btns.length; i++) {
if (i < disable)
btns[i].disabled = true
else
btns[i].disabled = false
}
return
}
function parseNum(str, radix) {
int = str.replace(/\..*/,'')
frac = str.replace(/.*\./,'')
if (frac == int) frac = '0'
dec = parseInt(int, radix)
l = frac.length
div = '1'+frac.replace(/./,'0')
dec += parseInt(frac, radix) / parseInt(div, radix)
return dec;
}
function keyPress(evt) {
key = evt.key;
key = key.toUpperCase()
disp = document.getElementById('disp')
char = disp.innerText.slice(-1)
switch (key) {
case 'X':
if (char == '0') {
key = '0x'
disp.innerText = disp.innerText.slice(0,-1)
}
break
case 'B':
if (char == '0') {
key = '0b'
disp.innerText = disp.innerText.slice(0,-1)
}
break
case 'DELETE':
case 'BACKSPACE':
evt.preventDefault()
case '#':
key = 'Del'
break
case 'ENTER':
key = '='
break
case 'P':
updatePadMode(document.getElementById('pad'));
return
case 'M':
switch(mode) {
case 'dec': updateMode('hex'); break
case 'hex': updateMode('bin'); break
case 'bin': updateMode('dec'); break
}
return
default:
}
// in hex E = E, but otherwise it is EXP
if (mode != "hex" && key == "E") key = "EXP";
btns = document.getElementById("keypad").getElementsByTagName("button")
for (i = 0; i < btns.length; i++) {
if (btns[i].innerText == key) {
btns[i].click()
return
}
}
console.log("Unhandled", evt.key)
}
function evaluate(cmd) {
cmd = cmd.replace(/_|,/g, "")
.replace(/([^0-9A-Fx]|^)√([0-9A-Fx]*)/g, "$1($2^(1/2))")
.replace(/([0-9A-Fx]*)√([0-9A-Fx]*)/g, "($2^(1/$1))")
.replace(/log/g, "log10")
.replace(/ln/g, "log")
//.replace(/k\b/,'e+3')
//.replace(/M\b/,'e+6')
//.replace(/G\b/,'e+9')
//.replace(/m\b/,'e-3')
//.replace(/u\b/,'e-6')
//.replace(/n\b/,'e-9')
return math.evaluate(cmd)
}
// Button click function
function keyClick(key) {
decout = document.getElementById('disp')
preview = document.getElementById('prev')
hist = document.getElementById('hist')
if (binPad) {
key.innerText ^= 1
btns = document.getElementById("binpad").getElementsByClassName("numkey")
for (i = 0; i < btns.length; i++) {
if (key == btns[i]) {
if (key.innerText == 1) {
ans += 2 ** (63 - i)
} else {
ans -= 2 ** (63 - i)
}
console.log(ans)
decout.innerText = numString(ans, mode == 'dec' ? 10 : mode == 'hex' ? 16 : 2)
}
}
// update color row
updateColorRow()
return
} else if (mode == "bin") {
length = 2
} else if (mode == "hex") {
length = 16
} else {
length = 10
}
output = decout
// clear before entry
if (clear && key.innerText != "=" && key.innerText != "Del" && key.innerText != 'trig') {
if (key.className.indexOf('opkey') != -1)
output.innerText = numString(ans, length)
else
output.innerText = ""
clear = false
}
if (key.className.indexOf('spkey') == -1) {
output.innerText += key.innerText
}
// revert to dec if non numkey pushed
if (key.className.indexOf('numkey') == -1) {
updateKeyMode('dec');
}
switch (key.innerText) {
case '=' :
ans = evaluate(output.innerText)
ans = math.format(ans, {precision: 14})
out = numString(ans, length)
hist.innerText = output.innerText + '=' + out
output.innerText = out
if (hist.innerText.length) {
hbtn = document.createElement('button')
hbtn.className='w3-btn'
hbtn.innerText = hist.innerText
hbtn.onclick = function(){restoreHistory(this)}
el = document.getElementById('history')
el.append(hbtn)
el.scroll(0,9999)
}
clear = true
preview.innerHTML = " "
break;
case 'Ans' :
output.innerText += numString(ans, length)
break;
case 'Del':
if (output.innerText.length > 1) {
output.innerText = output.innerText.slice(0,-1)
} else {
output.innerText = "0"
clear = true;
preview.innerHTML = " "
}
break;
case '0x':
updateKeyMode('hex')
break;
case '0b':
updateKeyMode('bin')
break
case 'trig':
toggleTrigMode()
break
case 'EXP':
output.innerText += 'e'
default:
}
val = evaluate(output.innerText)
val = math.format(val, {precision: 14})
if (!clear) {
val = numString(val, length)
if (notation == 'engineering') {
console.log("eng", val)
val =val.replace(/e\+3$/,"e+3 (k)")
.replace(/e\+6$/,"e+6 (M)")
.replace(/e\+9$/,"e+9 (G)")
.replace(/e\-3$/,"e-3 (m)")
.replace(/e\-6$/,"e-6 (u)")
.replace(/e\-9$/,"e-9 (n)")
.replace(/e\+0$/, "")
}
preview.innerText = val
}
}
function restoreHistory(button) {
console.log(button.innerText)
output = document.getElementById('disp')
output.innerText = button.innerText.replace(/=.*/,'')
keyPress({key:'='})
}
// Find all the button
buttons = document.getElementsByClassName('w3-button')
// Set aspect ration to 2/3
for (i=0; i< buttons.length; i++) {
//buttons[i].style.height = buttons[i].clientWidth*2/3 + "px"
buttons[i].onclick = function() { keyClick(this); };
}
// Find all the output
outputs = document.getElementsByClassName('mode-sel')
// Set aspect ration to 2/3
for (i=0; i< outputs.length; i++) {
outputs[i].onclick = function() { updateMode(this); };
console.log("set output")
}
// Set initial mode
updateNotation('fixed')
updateMode('dec')
updateWordsize('0')
trigMode = false;