[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [avr-libc-dev] Re: Add items on TODO
From: |
Joerg Wunsch |
Subject: |
Re: [avr-libc-dev] Re: Add items on TODO |
Date: |
Wed, 30 Oct 2002 18:18:55 +0100 |
User-agent: |
Mutt/1.2.5i |
As E. Weddington wrote:
> 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)
If x == 1, atan2 would divide by 0. Hmm, it seems the case where x !=
0 and y == 0 is actually defined well, and can be used.
Btw., your atan2() call has the arguments reversed (as it was the case
with the library until recently).
--
J"org Wunsch Unix support engineer
address@hidden http://www.interface-systems.de/~j/
- [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, 2002/10/30
- Re: [avr-libc-dev] Re: Add items on TODO,
Joerg Wunsch <=
- 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