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From: Stephen Montgomery-Smith <stephen@missouri.edu>
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To: Bruce Evans <brde@optusnet.com.au>
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Cc: freebsd-numerics@FreeBSD.org
Subject: Re: Complex arg-trig functions
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On 09/21/2012 02:05 PM, Bruce Evans wrote:
> On Fri, 21 Sep 2012, Stephen Montgomery-Smith wrote:

> - decide whether my old change to remove unnecessary accuracy for the
>    case where ax == 1, ay < FLT_EPSILON in catanh() is correct (you
>    didn't accept it, and maybe other accuracy changes make it extra
>    accuracy more interesting).

Or maybe I missed it.



I did put in the pio2_hi etc stuff in before this email telling me to 
hold off.

I assume you still want pio2_hi etc stuff in catanh.  There is it still 
m_pi_2.  I was thinking
poi2_hi + (tiny + pio2_lo)
or maybe declaring pio2_lo as volatile and using
pio2_hi + pio2_lo

This last week I was very busy and I had to put this project off a 
while.  But now I think things are slowing down again.