GRASS GIS 8 Programmer's Manual  8.5.0dev(2024)-ee9fa48798
xnot.c
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1 #include <grass/gis.h>
2 #include <grass/raster.h>
3 #include <grass/calc.h>
4 
5 /****************************************************************
6 not(a) = !a
7 ****************************************************************/
8 
9 int f_not(int argc, const int *argt, void **args)
10 {
11  CELL *res = args[0];
12  CELL *arg1 = args[1];
13  int i;
14 
15  if (argc < 1)
16  return E_ARG_LO;
17  if (argc > 1)
18  return E_ARG_HI;
19 
20  if (argt[1] != CELL_TYPE)
21  return E_ARG_TYPE;
22 
23  if (argt[0] != CELL_TYPE)
24  return E_RES_TYPE;
25 
26  for (i = 0; i < columns; i++) {
27  if (IS_NULL_C(&arg1[i]))
28  SET_NULL_C(&res[i]);
29  else
30  res[i] = !arg1[i];
31  }
32 
33  return 0;
34 }
35 
36 int c_not(int argc, int *argt)
37 {
38  if (argc < 1)
39  return E_ARG_LO;
40  if (argc > 1)
41  return E_ARG_HI;
42 
43  if (argt[1] != CELL_TYPE)
44  return E_ARG_TYPE;
45 
46  argt[0] = CELL_TYPE;
47 
48  return 0;
49 }
@ E_RES_TYPE
Definition: calc.h:14
@ E_ARG_TYPE
Definition: calc.h:13
@ E_ARG_HI
Definition: calc.h:12
@ E_ARG_LO
Definition: calc.h:11
#define IS_NULL_C(x)
Definition: calc.h:26
int columns
Definition: calc.c:11
#define SET_NULL_C(x)
Definition: calc.h:30
int CELL
Definition: gis.h:627
#define CELL_TYPE
Definition: raster.h:11
int c_not(int argc, int *argt)
Definition: xnot.c:36
int f_not(int argc, const int *argt, void **args)
Definition: xnot.c:9