xmalloc (sizeof(*info->isam_positions) * info->no_isam_positions);
memcpy (info->isam_positions, r_parms->isam_positions,
sizeof(*info->isam_positions) * info->no_isam_positions);
xmalloc (sizeof(*info->isam_positions) * info->no_isam_positions);
memcpy (info->isam_positions, r_parms->isam_positions,
sizeof(*info->isam_positions) * info->no_isam_positions);