Re: [LAU] OT(ish): Strange coding problem (audio related)

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From: <fons@...>
To: <linux-audio-user@...>
Date: Saturday, January 29, 2011 - 11:46 am

On Sat, Jan 29, 2011 at 12:07:12PM +0100, Philipp Überbacher wrote:

> Took me a while to figure out that libm is part of glibc :)

It isn't. But it lives in /lib, not /usr/lib

> > k = (int)(log2(x) + 1e-6)

Everything floating point 'suffers from the same problem'.
Even addition. (1/3.0 + 1/3.0 + 1/3.0 == 1.0) doesn't have
to result in true.

> > int m, k;

It's a single CPU cycle on most processors, and on some (e.g. ARM)
it can even be combined with other instructions.

Ciao,

--
FA

There are three of them, and Alleline.

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Messages in current thread:
[LAU] OT(ish): Strange coding problem (audio related), James Stone, (Fri Jan 28, 12:35 am)
Re: [LAU] OT(ish): Strange coding problem (audio related), Gabriel M. Beddingfield, (Fri Jan 28, 3:01 am)
Re: [LAU] OT(ish): Strange coding problem (audio related), Philipp Überbacher, (Fri Jan 28, 11:29 am)
Re: [LAU] OT(ish): Strange coding problem (audio related), Peter Nelson, (Fri Jan 28, 12:04 pm)
Re: [LAU] OT(ish): Strange coding problem (audio related), Philipp Überbacher, (Fri Jan 28, 1:02 pm)
Re: [LAU] OT(ish): Strange coding problem (audio related), Philipp Überbacher, (Sat Jan 29, 11:07 am)
Re: [LAU] OT(ish): Strange coding problem (audio related), Peter Nelson, (Sat Jan 29, 12:47 pm)
Re: [LAU] OT(ish): Strange coding problem (audio related), Philipp Überbacher, (Sun Jan 30, 1:29 pm)
Re: [LAU] OT(ish): Strange coding problem (audio related), Philipp Überbacher, (Sun Feb 13, 3:30 pm)
Re: [LAU] OT(ish): Strange coding problem (audio related), , (Sat Jan 29, 11:46 am)
Re: [LAU] OT(ish): Strange coding problem (audio related), Philipp Überbacher, (Sat Jan 29, 12:22 pm)
Re: [LAU] OT(ish): Strange coding problem (audio related), Peter Nelson, (Sat Jan 29, 12:54 pm)
Re: [LAU] OT(ish): Strange coding problem (audio related), Philipp Überbacher, (Sun Jan 30, 1:46 pm)
Re: [LAU] OT(ish): Strange coding problem (audio related), Gabriel M. Beddingfield, (Fri Jan 28, 2:40 pm)
Re: [LAU] OT(ish): Strange coding problem (audio related), Gabriel Beddingfield, (Fri Jan 28, 12:28 pm)
Re: [LAU] OT(ish): Strange coding problem (audio related), Peter Nelson, (Fri Jan 28, 12:41 pm)
Re: [LAU] OT(ish): Strange coding problem (audio related), Gabriel M. Beddingfield, (Fri Jan 28, 2:31 pm)