Mark wrote: > Adding decimal to Rhino would presumably build on the BigDecimal > class already present in Java. Is Java's BigDecimal class > sufficiently conformant to the relevant IEEE spec to support a > conformant implementation of the decimal proposed for EcmaScript?
It follows the same arithmetic rules, but is not a complete implementation of IEEE 754 (in particular, it does not have Infinity and NaNs, or malleable exponent range limits, and hence its overflow/exception cases are different. Sun were talking of either extending it or providing a wrapper class which used it yto provide exact IEEE 754 conformance, but I do not know the status of that work item. > And is the implementation sufficiently independent of the > implementation the IBM guys might add to WebKit or Spidermonkey to > count as a cross check on the spec? Well, I wrote most of the Java 5 extensions to BigDecimal (including the MathContext support, etc.), so one might argue that it's not particularly independent. However, it is a completely different implementation, historically. > IBM guys, would you be interested in contributing such a decimal implementation to Rhino? BigDecimal is 'owned' by Sun, so not really something we could contribute. Mike Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU _______________________________________________ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss
