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| Viewing file: Select action/file-type: /* eslint no-bitwise: "off" */
// Credit: https://github.com/paulmillr/es6-shim/
"use strict";
var pow = Math.pow;
module.exports = function (bytes, ebits, fbits) {
// Bytes to bits
var bits = [], i, j, bit, str, bias, sign, e, fraction;
for (i = bytes.length; i; i -= 1) {
bit = bytes[i - 1];
for (j = 8; j; j -= 1) {
bits.push(bit % 2 ? 1 : 0);
bit >>= 1;
}
}
bits.reverse();
str = bits.join("");
// Unpack sign, exponent, fraction
bias = (1 << (ebits - 1)) - 1;
sign = parseInt(str.substring(0, 1), 2) ? -1 : 1;
e = parseInt(str.substring(1, 1 + ebits), 2);
fraction = parseInt(str.substring(1 + ebits), 2);
// Produce number
if (e === (1 << ebits) - 1) return fraction === 0 ? sign * Infinity : NaN;
if (e > 0) return sign * pow(2, e - bias) * (1 + fraction / pow(2, fbits));
if (fraction !== 0) return sign * pow(2, -(bias - 1)) * (fraction / pow(2, fbits));
return sign < 0 ? -0 : 0;
};
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