alloc_cell.c File Reference

#include <math.h>
#include <grass/gis.h>

Include dependency graph for alloc_cell.c:

Go to the source code of this file.

Defines
#define	F2I(map_type)   (map_type == CELL_TYPE ? 0 : (map_type == FCELL_TYPE ? 1 : 2))
Functions
int	G_raster_size (RASTER_MAP_TYPE data_type)
	return size of raster
CELL *	G_allocate_cell_buf ()
	allocate a raster buffer
void *	G_allocate_raster_buf (RASTER_MAP_TYPE data_type)
	Allocate raster array.
CELL *	G_allocate_c_raster_buf ()
	Allocate an array of CELL.
FCELL *	G_allocate_f_raster_buf ()
	Allocate an array of FCELL.
DCELL *	G_allocate_d_raster_buf ()
	Allocate an array of DCELL.
char *	G_allocate_null_buf ()
	Allocate an array of char.
unsigned char *	G__allocate_null_bits (int cols)
int	G__null_bitstream_size (int cols)

---

Define Documentation

#define F2I

(

map_type

)

(map_type == CELL_TYPE ? 0 : (map_type == FCELL_TYPE ? 1 : 2))

Definition at line 5 of file alloc_cell.c.

Referenced by G_raster_size().

---

Function Documentation

unsigned char* G__allocate_null_bits

(

int

cols

)

Definition at line 130 of file alloc_cell.c.

References G__null_bitstream_size(), and G_calloc().

Referenced by G__open_cell_old().

int G__null_bitstream_size

(

int

cols

)

Definition at line 138 of file alloc_cell.c.

Referenced by G__allocate_null_bits(), G__check_null_bit(), G__convert_01_flags(), G__convert_flags_01(), G__init_null_bits(), G__set_flags_from_01_random(), and G__write_null_bits().

CELL* G_allocate_c_raster_buf

(

)

Allocate an array of CELL.

Allocate an array of CELL based on the number of columns in the current region.

Returns:

CELL *

Definition at line 79 of file alloc_cell.c.

References G_calloc(), and G_window_cols().

CELL* G_allocate_cell_buf

(

)

allocate a raster buffer

This routine allocates a buffer of type CELL just large enough to hold one row of raster data (based on the number of columns in the active region).

CELL *cell;
 cell = G_allocate_cell_buf(void);

If larger buffers are required, the routine G_malloc can be used. If sufficient memory is not available, an error message is printed and exit() is called. Returns pointer to a buffer. The routine is generally used with each open cell file.

Parameters:

void

Returns:

CELL *

Definition at line 48 of file alloc_cell.c.

References G_calloc(), and G_window_cols().

DCELL* G_allocate_d_raster_buf

(

)

Allocate an array of DCELL.

Allocate an array of DCELL based on the number of columns in the current region.

Returns:

DCELL *

Definition at line 109 of file alloc_cell.c.

References G_calloc(), and G_window_cols().

FCELL* G_allocate_f_raster_buf

(

)

Allocate an array of FCELL.

Allocate an array of FCELL based on the number of columns in the current region.

Returns:

FCELL *

Definition at line 94 of file alloc_cell.c.

References G_calloc(), and G_window_cols().

char* G_allocate_null_buf

(

)

Allocate an array of char.

Allocate an array of char based on the number of columns in the current region.

Returns:

char *

Definition at line 124 of file alloc_cell.c.

References G_calloc(), and G_window_cols().

void* G_allocate_raster_buf

(

RASTER_MAP_TYPE

data_type

)

Allocate raster array.

Allocate an array of CELL, FCELL, or DCELL (depending on data_type) based on the number of columns in the current region.

Parameters:

data_type

Returns:

void *

Definition at line 63 of file alloc_cell.c.

References G_calloc(), G_raster_size(), and G_window_cols().

int G_raster_size

(

RASTER_MAP_TYPE

data_type

)

return size of raster

If data_type is CELL_TYPE, returns sizeof(CELL) If data_type is FCELL_TYPE, returns sizeof(FCELL) If data_type is DCELL_TYPE, returns sizeof(DCELL)

Parameters:

data_type

Returns:

int

Definition at line 22 of file alloc_cell.c.

References F2I.

Referenced by G__lookup_colors(), G__set_null_value(), G_allocate_raster_buf(), G_get_raster_row_colors(), G_mark_raster_cats(), G_raster_cpy(), G_row_update_fp_range(), and G_zero_raster_buf().