GRASS GIS 8 Programmer's Manual 8.4.1(2025)-45ca3179ab
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xnot.c
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1#include <grass/gis.h>
2#include <grass/raster.h>
3#include <grass/calc.h>
4
5/****************************************************************
6not(a) = !a
7****************************************************************/
8
9int 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
36int 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}
int columns
Definition calc.c: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