RFA: Add ! LDBL_EQ_DBL implementations of cosl, sinl and tanl
Tue Mar 3 12:09:00 GMT 2015
> That's right, a math.h patch is missing.
Snafu - I had patched the file, but forgot to include it in the
> Setting errno should be easy to add:
> - cosl, sinl and tanl just need an extra check for Inf to set errno to
> - tanl needs an extra check if the result of a non-Inf arg is Inf to
> return ERANGE.
> - fabsl doesn't define errors>
> - floorl doesn't produce errors (see Linux man page),
> Nick, any problem to add this?
I can do this, but... sleeping on it last night, I realised that I had
not checked all of the code paths in the new functions. When I checked
them this morning I discovered that they were broken. Ie sinl(), cosl()
and tanl() all return incorrect values for certain, large, input values.
I tried to investigate, but the maths involved is beyond me, so I am
going to have to shelve this patch until I have more time. Sorry.
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