GRASS GIS 8 Programmer's Manual 8.2.0(2022)-exported
xbitnot.c
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1
2#include <grass/gis.h>
3#include <grass/raster.h>
4#include <grass/calc.h>
5
6/****************************************************************
7bitnot(a) = ~a
8****************************************************************/
9
10int f_bitnot(int argc, const int *argt, void **args)
11{
12 CELL *res = args[0];
13 CELL *arg1 = args[1];
14 int i;
15
16 if (argc < 1)
17 return E_ARG_LO;
18 if (argc > 1)
19 return E_ARG_HI;
20
21 if (argt[1] != CELL_TYPE)
22 return E_ARG_TYPE;
23
24 if (argt[0] != CELL_TYPE)
25 return E_RES_TYPE;
26
27 for (i = 0; i < columns; i++) {
28 if (IS_NULL_C(&arg1[i]))
29 SET_NULL_C(&res[i]);
30 else
31 res[i] = ~arg1[i];
32 }
33
34 return 0;
35}
int columns
Definition: calc.c:12
int f_bitnot(int argc, const int *argt, void **args)
Definition: xbitnot.c:10