Date: Wed, 24 Nov 2010 02:45:58 +0000 From: Alexander Best <arundel@freebsd.org> To: Tobias <tobiash@gmail.com> Cc: FreeBSD <freebsd-questions@freebsd.org> Subject: Re: libm alternative in ports Message-ID: <20101124024558.GA53600@freebsd.org> In-Reply-To: <AANLkTinKNrguch=DOwLqXb0UGnpJ59xMvCSgzYwujDQe@mail.gmail.com> References: <20101123210013.GA71784@freebsd.org> <AANLkTinOnFU59K1e4BNZmitC=eHpEmXN6vCvGfMVZbQg@mail.gmail.com> <20101123231517.GA5056@freebsd.org> <AANLkTinKNrguch=DOwLqXb0UGnpJ59xMvCSgzYwujDQe@mail.gmail.com>
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On Tue Nov 23 10, Tobias wrote: > On Tue, Nov 23, 2010 at 4:15 PM, Alexander Best <arundel@freebsd.org> wrote: > > > On Tue Nov 23 10, Chris Brennan wrote: > > > On Tue, Nov 23, 2010 at 4:00 PM, Alexander Best <arundel@freebsd.org> > > wrote: > > > > > > > hi there, > > > > > > > > does anybody if there's an alternative for libm in the ports dir? i > > need > > > > it, > > > > because the newest snapshots of mplayer require log2() and log2f(), > > which > > > > the > > > > base libm doesn't support. > > > > > > > > cheers. > > > > alex > > > > Can't you just calculate it yourself? > log2(n) = log10(n)/log10(2)? > http://logbase2.blogspot.com/2007/12/log-base-2.html thanks a lot for the hint. that might be a temporal solution. i don't think log2() and log2f() can be implemented that simply, because POSIX defines quite a few historical bugs which programs rely on. cheers. alex > > --Tobias -- a13x
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