js16进制转浮点数

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时间：2024-12-17 11:41 阅读：569

var a = "BF5AE148";
var b = parseInt(a,16);
var s = b&0x80000000/0x80000000;
var e = (b&0x7f800000)/0x800000-127;
var c = (b&0x7fffff)/0x800000;
var re = Math.pow(-1,s)*(1+c)*Math.pow(2,e);
document.write(re.toString(10));

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