310 lines
10 KiB
HTML
310 lines
10 KiB
HTML
<!DOCTYPE html>
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<html lang='en'>
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<head>
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<meta charset='utf-8' />
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<meta name="Author" content="M Mclaughlin">
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<title>Testing BigNumber against Number</title>
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<style>
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body, ul, form, h1, div {margin: 0; padding: 0;}
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body, pre {font-family: Calibri, Arial, Sans-Serif;}
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form {width: 48em; margin: 1.6em auto; border: 2px solid rgb(200, 200, 200);}
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h1 {text-align: center; font-size: 1.2em; padding: 0.6em 0;
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background-color: rgb(200, 200, 200)}
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ul {list-style-type: none; color: rgb(85, 85, 85); padding: 1em 1em 0 2em;}
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.input, ul {background-color: rgb(245, 245, 245);}
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.input, .output {padding: 0 1em 1em 2em;}
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.output, .methods {background-color: rgb(225, 225, 225);}
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.methods {padding-bottom: 1em;}
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.output {padding-bottom: 2em;}
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.size {width: 80%;}
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label {width: 10em; color: rgb(0, 0, 0); margin-left: 0.6em;}
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label {display: inline-block;}
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span, .exLabel, pre {font-size: 0.9em;}
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pre {display: inline;}
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.exLabel {display: inline; margin-left: 0; width: 2em;}
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.arg, .result, .dp {width: 5em; margin-right: 0.8em; margin-top: 1.2em;}
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.dp {width: auto;}
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.exInput {margin-left: 1em;}
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.code {width: 60em; margin: 0 auto; font-family: Courier New, Courier,
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monospace; font-size: 0.8em;}
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</style>
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<script src='../../bignumber.js'></script>
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</head>
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<body>
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<form>
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<h1>Testing BigNumber against Number</h1>
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<ul class='methods'>
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<li>
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<input type='radio' id='toExponential' name=1/>
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<label for='toExponential'>toExponential</label>
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<span>[ decimal places ]</span>
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</li>
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<li>
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<input type='radio' id='toFixed' name=1/>
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<label for='toFixed'>toFixed</label>
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<span>[ decimal places ]</span>
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</li>
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<li>
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<input type='radio' id='toPrecision' name=1/>
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<label for='toPrecision'>toPrecision</label>
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<span>[ significant digits ]</span>
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</li>
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<li>
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<input type='radio' id='round' name=1/>
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<label for='round'>round</label>
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<span>[ decimal places [ , rounding mode ] ]</span>
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</li>
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<li>
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<input type='radio' id='toFraction' name=1/>
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<label for='toFraction'>toFraction</label>
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<span>[ maximum denominator ]</span>
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</li>
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<li>
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<input type='radio' id='sqrt' name=1/>
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<label for='sqrt'>sqrt</label>
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</li>
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</ul>
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<ul id='roundings'>
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<li>
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<input type='radio' id=0 name=2/>
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<label for=0 >UP</label>
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<span>Rounds away from zero</span>
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</li>
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<li>
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<input type='radio' id=1 name=2/>
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<label for=1 >DOWN</label>
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<span>Rounds towards zero</span>
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</li>
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<li>
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<input type='radio' id=2 name=2/>
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<label for=2 >CEIL</label>
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<span>Rounds towards +Infinity</span>
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</li>
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<li>
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<input type='radio' id=3 name=2/>
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<label for=3 >FLOOR</label>
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<span>Rounds towards -Infinity</span>
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</li>
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<li>
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<input type='radio' id=4 name=2/>
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<label for=4 >HALF_UP</label>
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<span>Rounds towards nearest neighbour. If equidistant, rounds up</span>
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</li>
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<li>
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<input type='radio' id=5 name=2/>
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<label for=5 >HALF_DOWN</label>
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<span>Rounds towards nearest neighbour. If equidistant, rounds down</span>
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</li>
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<li>
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<input type='radio' id=6 name=2/>
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<label for=6 >HALF_EVEN</label>
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<span>Rounds towards nearest neighbour. If equidistant, rounds towards even neighbour</span>
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</li>
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<li>
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<input type='radio' id=7 name=2/>
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<label for=7 >HALF_CEIL</label>
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<span>Rounds towards nearest neighbour. If equidistant, rounds towards +Infinity</span>
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</li>
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<li>
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<input type='radio' id=8 name=2/>
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<label for=8 >HALF_FLOOR</label>
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<span>Rounds towards nearest neighbour. If equidistant, rounds towards -Infinity</span>
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</li>
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</ul>
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<div class='input'>
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<div class='dpDiv'>
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<label class='dp' id='dpLabel' for='dp'>Decimal places:</label>
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<input type='text' id='dp' name='dp' size=20 />
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<pre> BigNumber ERRORS:</pre>
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<input class='exInput' type='radio' id='exTrue' name=3/>
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<label class='exLabel' for='exTrue'>true</label>
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<input class='exInput' type='radio' id='exFalse' name=3/>
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<label class='exLabel' for='exFalse'>false</label>
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</div>
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<label class='arg' for='input'>Input:</label>
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<input class='size' type='text' id='input' name='input' />
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</div>
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<div class='output'>
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<label class='result' for='bignumber'>BigNumber:</label>
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<input class='size' type='text' id='bignumber' name='bignumber' readonly />
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<div id='number'>
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<label class='result' for='num'>Number:</label>
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<input class='size' type='text' id='num' name='num' readonly />
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</div>
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</div>
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</form>
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<div class= 'code' id='code'></div>
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<script>
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(function () {
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var i, toFraction, lastFocus,
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d = document,
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$ = function (id) {return d.getElementById(id)},
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$input = $('input'),
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$dp = $('dp'),
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$dpLabel = $('dpLabel'),
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$num = $('num'),
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$bignumber = $('bignumber'),
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$number = $('number'),
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$roundings = $('roundings'),
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$exceptionsTrue = $('exTrue'),
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$exceptionsFalse = $('exFalse'),
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$code = $('code'),
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$inputs = d.getElementsByTagName('input');
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function round() {
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var i, rb, method, mode, includeNumber, numVal, bignumberVal, isSqrt,
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dp = ($dp.value = $dp.value.replace(/\s+/g, '')),
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dpEmpty = dp === '',
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input = ($input.value = $input.value.replace(/\s+/g, '')),
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exceptions = $exceptionsTrue.checked,
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code = 'BigNumber.config({ERRORS: ' + exceptions;
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BigNumber.config({ERRORS: exceptions});
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if (input) {
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for (i = 0; i < 15; i++) {
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rb = $inputs[i];
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if (rb.checked) {
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if (i < 6) method = rb.id;
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else mode = rb.id;
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}
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}
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$num.value = $bignumber.value = $code.innerHTML = '';
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isSqrt = method == 'sqrt';
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if (includeNumber = method != 'toFraction' && method != 'round') {
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try {
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numVal = isSqrt
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? Math.sqrt(input)
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: dpEmpty
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? Number(input)[method]()
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: Number(input)[method](dp);
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} catch(e) {
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numVal = e;
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}
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if (isSqrt && !dpEmpty) {
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try {
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BigNumber.config(dp);
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} catch(e) {
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$bignumber.value = e;
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return;
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}
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code += ', DECIMAL_PLACES: ' + dp;
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}
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BigNumber.config({ROUNDING_MODE: mode});
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code += ', ROUNDING_MODE: ' + mode;
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}
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code += "})<br>BigNumber('" + input + "')." + method + "(";
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if (!isSqrt) {
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if (method == 'round') {
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if (dpEmpty) {
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dp = undefined;
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dpEmpty = false;
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}
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code += "'" + dp + "', " + mode;
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} else if (!dpEmpty) code += "'" + dp + "'";
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}
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code += ')<br><br>';
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if (includeNumber) {
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if (isSqrt) {
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code += "Math.sqrt('" + input + "')";
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} else {
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code += "Number('" + input + "')." + method + "(";
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if (!dpEmpty) code += "'" + dp + "'";
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code += ")";
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}
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}
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try {
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bignumberVal = dpEmpty
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? new BigNumber(input)[method]()
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: new BigNumber(input)[method](dp, mode);
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} catch(e) {
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bignumberVal = e;
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}
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setTimeout(function () {
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$bignumber.value = bignumberVal;
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if (includeNumber) $num.value = numVal;
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$code.innerHTML = code;
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}, 100);
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if (window.console && console.log) {
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input = new BigNumber(input);
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console.log('\nc: ' + input.c +
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'\ne: ' + input.e +
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'\ns: ' + input.s);
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}
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}
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lastFocus.focus();
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}
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BigNumber.config({
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DECIMAL_PLACES: 20,
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ROUNDING_MODE: 4,
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EXPONENTIAL_AT: 1E9,
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RANGE: 1E9,
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ERRORS: false,
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CRYPTO: false,
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POW_PRECISION: 100,
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MODULO_MODE: 1
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});
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$input.value = $dp.value = $num.value = $bignumber.value = '';
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setTimeout(function () {$input.focus()}, 0);
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for (i = 0; i < 15; i++) {
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$inputs[i].checked = false;
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$inputs[i].onclick = function () {
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if (this.id >= 0) {
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round();
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} else {
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if (this.id == 'toFraction') {
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toFraction = true;
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$dpLabel.innerHTML = 'Maximum denominator:';
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$number.style.display = $roundings.style.display = 'none';
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} else {
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$dpLabel.innerHTML = this.id == 'toPrecision'
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? 'Significant digits:'
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: 'Decimal places:';
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$number.style.display = this.id == 'round'
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? 'none'
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: 'block';
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$roundings.style.display = 'block';
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if (toFraction) toFraction = false;
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}
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$dp.value = $bignumber.value = $num.value = $code.innerHTML = '';
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lastFocus.focus();
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}
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};
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}
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$exceptionsTrue.onclick = $exceptionsFalse.onclick = round;
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$input.onfocus = $dp.onfocus = function () {
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lastFocus = this;
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};
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$inputs[1].checked = $inputs[10].checked = $exceptionsTrue.checked = true;
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document.onkeypress = function (e) {
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if ((e || window.event).keyCode == 13) {
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round();
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return false;
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} else $num.value = $bignumber.value = '';
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};
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})();
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</script>
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</body>
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</html>
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