🔴special number

🚧 under construction

JS ⟩ value ⟩ primitive ⟩ number ⟩ special number

🔴 主題

• NaN

• Infinity

• Number.EPSILON

• Number.MAX_SAFE_INTEGER

📘 手冊

• Infinity

• Number.POSITIVE_INFINITY

• Number.EPSILON

🚧

• subnormal

exp \ frac	F = 0	F ≠ 0
E=(00000000000)₂	signed zero	subnormals
E=(11111111111)₂	∞	NaNs

Subnormal

// subnormals
// ┌────────────────────────────────────────────────────────┐
// │ n = (-1)^sign * 2^[1 - (01111111111)₂] * (0.fraction)₂ │
// └────────────────────────────────────────────────────────┘
//     = ± 2¯¹⁰²² * (0.fraction)₂