C++ (Cpp) ped_alignment_align_down Examples

Example #1

File: pynatmath.c Project: axaxs/pyparted

PyObject *py_ped_alignment_align_down(PyObject *s, PyObject *args) {
    PyObject *in_geom = NULL;
    PedAlignment *align = NULL;
    PedGeometry *out_geom = NULL;
    PedSector sector, ret;

    if (!PyArg_ParseTuple(args, "O!L", &_ped_Geometry_Type_obj, &in_geom, &sector)) {
        return NULL;
    }

    align = _ped_Alignment2PedAlignment(s);
    if (align == NULL) {
        return NULL;
    }

    out_geom = _ped_Geometry2PedGeometry(in_geom);
    if (out_geom == NULL) {
        return NULL;
    }

    ret = ped_alignment_align_down(align, out_geom, sector);

    ped_alignment_destroy(align);

    if (ret == -1) {
        PyErr_SetString(PyExc_ArithmeticError, "Could not align down to sector");
        return NULL;
    }

    return PyLong_FromLong(ret);
}

Example #2

/*
 * Return the region within which the start must lie
 * in order to satisfy a constriant.  It takes into account
 * constraint->start_range, constraint->min_size and constraint->max_size.
 * All sectors in this range that also satisfy alignment requirements have
 * an end, such that the (start, end) satisfy the constraint.
 */
static PedGeometry*
_constraint_get_canonical_start_range (const PedConstraint* constraint)
{
	PedSector	first_end_soln;
	PedSector	last_end_soln;
	PedSector	min_start;
	PedSector	max_start;
	PedGeometry	start_min_max_range;

	if (constraint->min_size > constraint->max_size)
		return NULL;

	first_end_soln = ped_alignment_align_down (
			constraint->end_align, constraint->end_range,
			constraint->end_range->start);
	last_end_soln = ped_alignment_align_up (
			constraint->end_align, constraint->end_range,
			constraint->end_range->end);
	if (first_end_soln == -1 || last_end_soln == -1
	    || first_end_soln > last_end_soln
	    || last_end_soln < constraint->min_size)
		return NULL;

	min_start = first_end_soln - constraint->max_size + 1;
	if (min_start < 0)
		min_start = 0;
	max_start = last_end_soln - constraint->min_size + 1;
	if (max_start < 0)
		return NULL;

	ped_geometry_init (
		&start_min_max_range, constraint->start_range->dev,
		min_start, max_start - min_start + 1);

	return ped_geometry_intersect (&start_min_max_range,
				       constraint->start_range);
}