RAM vs. SEG in r.watershed

[Olga Waupotitsch]

try the following:
 
replace raster/r.watershed/ram/ramseg.h

by the following fixed ramseg.h:




#define RAMSEG		int
#define RAMSEGBITS 	4
#define DOUBLEBITS 	8	/* 2 * ramsegbits	*/
#define SEGLENLESS 	15	/* 2 ^ ramsegbits - 1	*/

#define SEG_INDEX(s,r,c) (int) \
   (((((r) >> RAMSEGBITS) * (s) + ((c) >> RAMSEGBITS)) << DOUBLEBITS) \
    + (((r) & SEGLENLESS) << RAMSEGBITS) + ((c) & SEGLENLESS))