Shift row or column

//Shift a row/column in array by 1 starting from some point. This is the double array variant.
void shift ( int rowStart, int colStart, int wid, int hei, int actWid, bool vert, double *array ) {
    for ( int ind = (vert?rowStart:colStart); ind < (vert?hei:wid) - 1; ind ++ )
        array[(vert?ind:rowStart)*actWid + (vert?colStart:ind)] = array[(vert?ind+1:rowStart)*actWid + (vert?colStart:ind+1)];
}