slightly faster algorithm

[unix-history] / usr / src / lib / libcurses / delch.c

# include       "curses.ext"

/*
*      This routine performs an insert-char on the line, leaving
* (_cury,_curx) unchanged.
*
* @(#)delch.c  1.2 (Berkeley) %G%
*/
wdelch(win)
reg WINDOW      *win; {

       reg char        *temp1, *temp2;
       reg char        *end;

       end = &win->_y[win->_cury][win->_maxx - 1];
       temp1 = &win->_y[win->_cury][win->_curx];
       temp2 = temp1 + 1;
       while (temp1 < end)
               *temp1++ = *temp2++;
       *temp1 = ' ';
       win->_lastch[win->_cury] = win->_maxx - 1;
       if (win->_firstch[win->_cury] == _NOCHANGE ||
           win->_firstch[win->_cury] > win->_curx)
               win->_firstch[win->_cury] = win->_curx;
       return OK;
}