Sam Ruby wrote: > Previous discussions focused on operators and type/membership related > builtin functions (i.e., typeof and instanceof). Here's a prioritized > list of functions provided by IEEE 754-2008 and/or the decNumber > implementation. > > The actual number of "a" and "a-" methods is fairly small, particularly > once you remove ones that are available in ECMAScript via other means.
Updated test results including these methods can be found here: http://intertwingly.net/stories/2008/09/20/estest.html - Sam Ruby > - - - - - > > Absolute requirement, and must be implemented as an 'instance' method > (for most of the others, the difference between a 'static' and > 'instance' method is negotiable): > > > * a toString > > Available as prefix or infix operators, or as builtin functions, may not > need to be duplicated as named Decimal methods: > > * a add > > * a compare > > * a copy > > * a copyNegate > > * a divide > > * a isFinite > > * a isNaN > > * a multiply > > * a remainder > > * a subtract > > Essential 754, not available as infix operator, so must be made > available as a named method. For consistency with Math, abs, max, > and min should be 'static' methods: > > > * a quantize > > * a copyAbs [called abs] > > * a max > > * a min > > Very useful functions which are not in 754 for various reasons; > strongly recommend include: > > > * a- divideInteger [extremely handy] > > * a- digits [= significant digits] > > * a- reduce [often asked for] > > * a- toEngString [really handy in practice] > > * a- getExponent [esp. if no compareTotal] > > Other 754 operations that are less essential but would probably add > later anyway. 'b+' are a subset that are especially useful in > practice: > > > * b FMA > > * b canonical > > * b compareSignal > > * b+ compareTotal > > * b compareTotalMag > > * b copySign > > * b isCanonical > > * b+ isInfinite > > * b+ isInteger > > * b isNormal > > * b+ isSignaling [if sNaNs supported] > > * b+ isSignalling [" " "] > > * b+ isSigned > > * b isSubnormal > > * b+ isZero > > * b logB > > * b maxMag > > * b minMag > > * b nextMinus > > * b nextPlus > > * b radix > > * b remainderNear > > * b+ sameQuantum > > * b scaleB > > * b+ setExponent > > * b toInt32 > > * b toInt32Exact > > * b+ toIntegralExact [perhaps only one of these] > > * b+ toIntegralValue [" " " " "] > > * b toUInt32 > > * b toUInt32Exact > > Probably drop because conflict with ES bitwise logical ops: > > > * c and (as digitAnd) > > * c invert (as digitInvert) > > * c or (as digitOr) > > * c rotate > > * c shift > > * c xor (as digitXor) > > And, finally, not needed: > > (The first two of these are 754 but don't fit with ES) > > * class > > * classString > > * fromBCD > > * fromInt32 > > * fromNumber > > * fromPacked > > * fromPackedChecked > > * fromString > > * fromUInt32 > > * fromWide > > * getCoefficient > > * setCoefficient > > * d nextToward > > * show > > * toBCD > > * toNumber > > * toPacked > > * toWider > > * version > > * zero > > - Sam Ruby > > _______________________________________________ > Es-discuss mailing list > Es-discuss@mozilla.org > https://mail.mozilla.org/listinfo/es-discuss > > _______________________________________________ Es-discuss mailing list Es-discuss@mozilla.org https://mail.mozilla.org/listinfo/es-discuss
