Am 19. Jan. 2009 um 10:39 Uhr schrieb Christian Borss:
>But you are right, it would be a more clean implementation to avoid a
>division by zero.
How about:
static __inline ALint aluCart2LUTpos(ALfloat re, ALfloat im)
{
ALint pos;
ALfloat denum;
denum = aluFabs(re) + aluFabs(im);
if (denum == 0.0)
return 0;
pos = round(QUADRANT_NUM * aluFabs(im) / denum);
if (re < 0.0)
pos = 2 * QUADRANT_NUM - pos;
if (im < 0.0)
pos = LUT_NUM - pos;
return pos % LUT_NUM;
}
Ciao,
Christian
--
Christian Borß, Dipl.-Ing. || Institut für Kommunikationsakustik
http://www.ika.ruhr-uni-bochum.de || Ruhr-Universität Bochum
Tel.: +49-(0)234-32-22470 || Universitätsstr. 150, IC1/33
Fax.: +49-(0)234-32-14165 || D-44780 Bochum (Germany)
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