GRASS GIS 8 Programmer's Manual 8.2.0(2022)-exported
xnull.c
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1
2#include <grass/gis.h>
3#include <grass/raster.h>
4#include <grass/calc.h>
5
6/****************************************************************
7null() null values
8****************************************************************/
9
10int f_null(int argc, const int *argt, void **args)
11{
12 CELL *res = args[0];
13 int i;
14
15 if (argc > 0)
16 return E_ARG_HI;
17
18 if (argt[0] != CELL_TYPE)
19 return E_RES_TYPE;
20
21 for (i = 0; i < columns; i++)
22 SET_NULL_C(&res[i]);
23
24 return 0;
25}
int columns
Definition: calc.c:12
int f_null(int argc, const int *argt, void **args)
Definition: xnull.c:10