Re: [avr-libc-dev] Possible bug in avr-libc documentation

[Joerg Wunsch]

As Christian Hachmann wrote:

>       double asin  (  double    __x  )

>          The asin() function computes the principal value of the arc
>      sine of x. The returned value is in the range [0, pi]
>      radians. A domain error occurs for arguments not in the range
>      [-1, +1].

Btw., your original HTML tag referred to jubal.westnet.com.  The
official documentation home is

http://www.nongnu.org/avr-libc/user-manual/index.html

The jubal.westnet.com site has been serving us well to bridge the gap
when savannah.[non]gnu.org had been attacked by crackers and was
unreachable, but contains now rather outdated documentation.

> While the funktion in avr-libc itself seems to me to work properly
> and returns values in the range [-pi/2,pi/2] the documentation names
> a range of [0,pi] which doesn't make sense esp. for negative
> arguments.

Please go to

http://savannah.nongnu.org/bugs/index.php

and file a bug report for this, to make sure we won't forget to fix
that.

-- 
cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/                        NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)