DEC64 浮點數

Hacker News Daily 上看到「DEC64: Decimal Floating Point」:

公式是:

value = coefficient * 10exponent

是以 10 為底。

0 與 NaN 是特別處理:

There are 255 possible representations of zero. They are all considered to be equal.

There is a special value called nan that has a coefficient of 0 and an exponent of -128. The result of division by zero is nan. nan is also the result of operations that produce results that are too large to be represented. nan is equal to itself.

網域也註冊一段時間了,不知道為什麼被突然提起...:

   Domain Name: DEC64.COM
   Registrar: 1 & 1 INTERNET AG
   Whois Server: whois.schlund.info
   Referral URL: http://1and1.com
   Name Server: NS57.1AND1.COM
   Name Server: NS58.1AND1.COM
   Status: ok
   Updated Date: 03-jun-2013
   Creation Date: 02-jun-2009
   Expiration Date: 02-jun-2014
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