| GRASS Programmer's Manual
    6.5.svn(2014)-r66266
    | 
#include <stdio.h>#include <stdlib.h>#include <grass/linkm.h>#include <grass/bitmap.h>
Go to the source code of this file.
| Macros | |
| #define | BM_col_to_byte(x) ((x)/8) | 
| #define | BM_col_to_bit(x) ((x)%8) | 
| Functions | |
| struct BM * | BM_create_sparse (int x, int y) | 
| Create a sparse bitmap of dimension 'x'/'y'.  More... | |
| int | BM_destroy_sparse (struct BM *map) | 
| Destroy sparse bitmap and free all associated memory.  More... | |
| int | BM_set_sparse (struct BM *map, int x, int y, int val) | 
| Set sparse bitmap value to 'val' at location 'x'/'y'.  More... | |
| int | BM_get_sparse (struct BM *map, int x, int y) | 
| Returns sparse bitmap value at location 'x'/'y'.  More... | |
| int | BM_get_map_size_sparse (struct BM *map) | 
| Returns size of sparse bitmap in bytes.  More... | |
| int | BM_dump_map_sparse (struct BM *map) | 
| Debugging code to dump out structure of links.  More... | |
| int | BM_dump_map_row_sparse (struct BM *map, int y) | 
| Debugging code to dump out structure of links for single row.  More... | |
| int | BM_file_write_sparse (FILE *fp, struct BM *map) | 
| Write sparse bitmap matrix out to disk file 'fp'. NOTE: 'fp' must already be opened and later closed by user.  More... | |
Create a sparse bitmap of dimension 'x'/'y'.
Returns bitmap structure or NULL on error
| x | |
| y | 
Definition at line 44 of file sparse.c.
References count, link_init(), link_new(), link_set_chunk_size(), malloc(), NULL, and y.
Referenced by BM_create(), and main().
| int BM_destroy_sparse | ( | struct BM * | map | ) | 
Destroy sparse bitmap and free all associated memory.
Returns 0
| map | 
Definition at line 90 of file sparse.c.
References free(), link_cleanup(), link_dispose(), NULL, and VOID_T.
Referenced by BM_destroy().
| int BM_dump_map_sparse | ( | struct BM * | map | ) | 
| int BM_file_write_sparse | ( | FILE * | fp, | 
| struct BM * | map | ||
| ) | 
Write sparse bitmap matrix out to disk file 'fp'. NOTE: 'fp' must already be opened and later closed by user.
Returns 0 on success or -1 on error
| fp | |
| map | 
Definition at line 364 of file sparse.c.
Referenced by BM_file_write().
| int BM_get_map_size_sparse | ( | struct BM * | map | ) | 
Returns size of sparse bitmap in bytes.
| map | 
Definition at line 272 of file sparse.c.
References NULL, and tools::size.
Referenced by BM_get_map_size().