assemblyscript/scripts/hexfloat.html at master · developerfred/assemblyscript · GitHub

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<style>

html, body { margin: 0; }

body { font-family: sans-serif; border-top: 5px solid #0074C1; }

form { margin: 10px; }

label { cursor: pointer; }

</style>

<h1>Hexadecimal float to decimal float converter</h1>

<p>

<button>Convert</button>

</p>

</form>

function convert(form) {

var isF64 = document.getElementById("f64").checked;

var pre = document.getElementById("pre").value;

var post = document.getElementById("post").value;

var input = document.getElementById("input").value;

document.getElementById("output").value = input

.replace(/\b(\-?0x[0-9a-fA-F]*(?:\.[0-9a-fA-F]+)?[pP][+-]?[0-9]+\b)/g, ($0, $1) => {

var val = parse($1);

return val.toPrecision(isF64 ? 18 : 10);

})

.replace(/(\d\.[0-9])0+\b/g, "$1")

.replace(/\bnan\b/g, "NaN")

.replace(/\binf\b/g, "Infinity")

.replace(/^T\(R\w, */mg, pre)

.replace(/\);?$/mg, post)

.replace(/ +/g, " ");

}

</script>

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