[vorbis-dev] Problems supporting rint.

[Don Pellegrino]

I am coding with vorbis using mingw32 (g++ for win32 without the cygwin.dll
dependency).  mingw32's math library does not support rint and I can't find
a replacement so I have tried the following:

Use Cygwin to execute ./configure.

Then:

(1) "make" with Cygwin - ok.  Cygwin supports rint.  I encode my Aerosmith's
"Get A Grip" .wav from the CD to .ogg with encoder_example.exe.  grip.ogg
file size is 5869034 bytes.  Sounds good

(2) "make" with mingw32 setting all occurrences of rint to "ceil". - ok.
Encode Get A Grip .wav again and get a 6141038 byte .ogg.  Sounds good.  But
why is it bigger now?

(3) "make" with mingw32 setting all occurrences of rint to "floor". - ok.
Encode Get A Grip .wav again and get a 5531747 byte .ogg.  Some parts sound
"off" - Now it is smaller too.

So I have posted to the mingw32 mailing list looking for a new math library
but I haven't found any responses yet (I have been unable to build the libm
from newlib for mingw32).

Any ideas on how I can get around calling rint and still get correct
functionality and file size?  Why do I have these differences?

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