GRASS GIS 8 Programmer's Manual 8.3.2(2024)-exported
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xbitnot.c
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1#include <grass/gis.h>
2#include <grass/raster.h>
3#include <grass/calc.h>
4
5/****************************************************************
6bitnot(a) = ~a
7****************************************************************/
8
9int f_bitnot(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}
int columns
Definition calc.c:11
int f_bitnot(int argc, const int *argt, void **args)
Definition xbitnot.c:9