[Bug 10073] Problems with the definitions of the trigonometric functions (math:)

http://www.w3.org/Bugs/Public/show_bug.cgi?id=10073





--- Comment #12 from dnovatchev@gmail.com  2010-07-14 16:29:23 ---
(In reply to comment #6)
> While considering this bug report, I would also like to ask the working group
> to review whether any of the following functions should be added to the list.
> This is a subset of those specified in section 9.1 ("Recommended functions") of
> the IEEE 754 (2008) specification:> I have excluded those that can trivially be
> calculated using other functions.
> exp      e^x
> exp2     2^x
> exp10    10^x
> log      log`e x
> log2     log`2 x
> log10    log`10 x
> pow      x ^ n
> powr     x ^ y
> atan2    atan2(y, x) => atan(y div x) but with cleaner overflow behaviour
> sinh, cosh, tanh
> asinh acosh, atanh

As I understand, most of these will make it into the next version of the
document.

I have three comments:

1. It is well established to denote log`e x as ln x. Please consider using the
well-established name.

2. exp2 and exp10 are quite redundant with pow and powr. I think that it would
be better if instead of these two functions we have pown m n, where both m and
n are positive integers.

3. Why we still don't have or() and and() ? Aren't these much more important
than the various trigonometric and exponential functions? Why is this hole in
the document?

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Received on Wednesday, 14 July 2010 16:29:26 UTC