don't call setbuf, use optimal size.

[unix-history] / usr / src / old / lib2648 / zermat.c

/*      zermat.c        4.1     83/03/09        */
/*
* zermat: set a matrix to all zeros
*/

#include "bit.h"

zermat(m, rows, cols)
bitmat m;
int rows, cols;
{
       register int size = ((cols + 7) >> 3) * rows;
       register char *p;

       for (p = &m[size]; p>=m; )
               *--p = 0;
}