Hi,
what about adding square and cube functions which accept any number of
arguments and return sum of squares/cubes? For one arg, they would just
return square/cube as expected, for more they will sum them (for none
return 0 of course).
Herby
Allen Wirfs-Brock wrote:
check out the current ES66 spec. draft. Based upon discussions at the
March TC39 meeting hypot2 was eliminated and an optional third argument
as added to hypot.
Note that the new function names such as hypot are generally selected to
match the names from widely used c libraries:
https://docs.google.com/spreadsheet/ccc?key=0Ak51JfLL8QLYdDBVcFZaMXhlY2d2RnM0TDVxLWlua3c&hl=en#gid=0
<https://docs.google.com/spreadsheet/ccc?key=0Ak51JfLL8QLYdDBVcFZaMXhlY2d2RnM0TDVxLWlua3c&hl=en#gid=0>
Allen
On Aug 13, 2012, at 2:16 AM, David Bruant wrote:
Hi,
I'd like to provide some feedback on the more math functions proposal
[1] (and the most recent PDF at the top of the page)
The hypot and hypot2 functions accept 2 or 3 arguments, but I don't
see a reason why they wouldn't accept an unbounded number of
arguments. Although the physical world can be accurately enough
described in 3 dimensions, math folks sometimes think in abstract
N-dimension spaces and compute euclidian distances in these spaces.
JS Engines are still free to heavily optimize the common case of 2 or
3 arguments.
I'd like to talk about naming as well. "hypot" (for "Hypotenuse") is
an accurate name for the 2 dimension case, but much less for 3
dimensions as far as I know (the English wikipedia page [2] doesn't
mention the 3D case either) and even less for N-dimension.
I think it would make sense to rename it. Maybe "euclidianDistance"
(too long?), "distance" [3] (accurate mathematically, but may sound
vague in the broader context of JavaScript), "eucl" (too cryptic?), other?
David
[1] http://wiki.ecmascript.org/doku.php?id=harmony:more_math_functions
[2] http://en.wikipedia.org/wiki/Hypothenuse
[3] http://en.wikipedia.org/wiki/Distance#Geometry
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