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                    node_modules/es5-ext/math/_unpack-ieee754.js
                
             | 33 lines
             | 927 B
             | application/javascript 
             | JavascriptLexer
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      /* 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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				/* 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;
				};