| /* |
| libparted - a library for manipulating disk partitions |
| Copyright (C) 2000 Free Software Foundation, Inc. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA |
| */ |
| |
| /** |
| * \addtogroup PedAlignment |
| * @{ |
| */ |
| |
| /** \file natmath.h */ |
| |
| #ifndef PED_NATMATH_H_INCLUDED |
| #define PED_NATMATH_H_INCLUDED |
| |
| |
| typedef struct _PedAlignment PedAlignment; |
| |
| #include <parted/disk.h> |
| |
| #define PED_MIN(a, b) ( ((a)<(b)) ? (a) : (b) ) |
| #define PED_MAX(a, b) ( ((a)>(b)) ? (a) : (b) ) |
| |
| /* this is weird (I'm still not sure I should be doing this!) |
| * |
| * For the functions: new, destroy, duplicate and merge: the following values |
| * for align are valid: |
| * * align == NULL (!) represents no solution |
| * * align->grain_size == 0 represents a single solution |
| * (align->offset) |
| * * align->grain_size > 0 represents a set of solutions |
| * |
| * These are invalid: |
| * * align->offset < 0 Note: this gets "normalized" |
| * * align->grain_size < 0 |
| * |
| * For the align_* operations, there must be a solution. i.e. align != NULL |
| * All solutions must be greater than zero. |
| */ |
| |
| struct _PedAlignment { |
| PedSector offset; |
| PedSector grain_size; |
| }; |
| |
| extern PedSector ped_round_up_to (PedSector sector, PedSector grain_size); |
| extern PedSector ped_round_down_to (PedSector sector, PedSector grain_size); |
| extern PedSector ped_round_to_nearest (PedSector sector, PedSector grain_size); |
| extern PedSector ped_greatest_common_divisor (PedSector a, PedSector b); |
| |
| extern int ped_alignment_init (PedAlignment* align, PedSector offset, |
| PedSector grain_size); |
| extern PedAlignment* ped_alignment_new (PedSector offset, PedSector grain_size); |
| extern void ped_alignment_destroy (PedAlignment* align); |
| extern PedAlignment* ped_alignment_duplicate (const PedAlignment* align); |
| extern PedAlignment* ped_alignment_intersect (const PedAlignment* a, |
| const PedAlignment* b); |
| |
| extern PedSector |
| ped_alignment_align_up (const PedAlignment* align, const PedGeometry* geom, |
| PedSector sector); |
| extern PedSector |
| ped_alignment_align_down (const PedAlignment* align, const PedGeometry* geom, |
| PedSector sector); |
| extern PedSector |
| ped_alignment_align_nearest (const PedAlignment* align, const PedGeometry* geom, |
| PedSector sector); |
| |
| extern int |
| ped_alignment_is_aligned (const PedAlignment* align, const PedGeometry* geom, |
| PedSector sector); |
| |
| extern const PedAlignment* ped_alignment_any; |
| extern const PedAlignment* ped_alignment_none; |
| |
| extern PedSector |
| ped_div_round_up (PedSector numerator, PedSector divisor); |
| |
| extern PedSector |
| ped_div_round_to_nearest (PedSector numerator, PedSector divisor); |
| |
| #endif /* PED_NATMATH_H_INCLUDED */ |
| |
| /** |
| * @} |
| */ |
| |
