Open shfshanyue opened 3 years ago
代码见: 给定一个数值,给出它在 IEEE754 的表示,如符号位、指数位与分数位 - codepen
function formatToBinaryExponent (num) {
const [int, dec] = String(num).split(/(?=\.)/).map(x => Number(x).toString(2))
const exponent = (int.length - 1).toString(2)
const fraction = int.slice(1) + dec.slice(2)
return {
exponent,
fraction: fraction.slice(0, 52),
sign: num > 0,
exact: fraction.length < 52,
}
}
console.log(formatToBinaryExponent(13.5))
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