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Re: [avr-libc-dev] Re: Add items on TODO
From: |
E. Weddington |
Subject: |
Re: [avr-libc-dev] Re: Add items on TODO |
Date: |
Wed, 30 Oct 2002 09:55:57 -0700 |
On 30 Oct 2002 at 17:43, Joerg Wunsch wrote:
> Well, we should at least document the flaw and the possible
> workaround. I wouldn't make the workaround the general solution,
> however, not only due to the size, but AFAIR there were also issues
> that the argument domain of asin/atan2 is different.
?????
math: asin(x) = atan(x/sqrt(1-x^2))
AFAIK, C lang: atan(x/y) == atan2(y, x) so C lang asin(x) ==
atan2(sqrt(1-x*x), x)
There should be in the avr-gcc-list archives where a user did a
workaround for acos(x) as atan2(x, sqrt(1-x*x)).
Eric
- [avr-libc-dev] Re: Add items on TODO, Theodore A. Roth, 2002/10/22
- Re: [avr-libc-dev] Re: Add items on TODO, Joerg Wunsch, 2002/10/23
- Re: [avr-libc-dev] Re: Add items on TODO, Joerg Wunsch, 2002/10/30
- Re: [avr-libc-dev] Re: Add items on TODO, E. Weddington, 2002/10/30
- Re: [avr-libc-dev] Re: Add items on TODO, Joerg Wunsch, 2002/10/30
- Re: [avr-libc-dev] Re: Add items on TODO,
E. Weddington <=
- Re: [avr-libc-dev] Re: Add items on TODO, Joerg Wunsch, 2002/10/30
- Re: [avr-libc-dev] Re: Add items on TODO, E. Weddington, 2002/10/30
- Re: [avr-libc-dev] Re: Add items on TODO, Joerg Wunsch, 2002/10/30
- Re: [avr-libc-dev] Re: Add items on TODO, E. Weddington, 2002/10/30
- Re: [avr-libc-dev] Re: Add items on TODO, Theodore A. Roth, 2002/10/30
- Re: [avr-libc-dev] Re: Add items on TODO, E. Weddington, 2002/10/30