GRASS GIS 8 Programmer's Manual
8.5.0dev(2024)-d6dec75dd4
xnull.c
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1
#include <
grass/gis.h
>
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#include <
grass/raster.h
>
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#include <
grass/calc.h
>
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/****************************************************************
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null() null values
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****************************************************************/
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int
f_null
(
int
argc,
const
int
*argt,
void
**args)
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{
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CELL
*res = args[0];
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int
i;
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if
(argc > 0)
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return
E_ARG_HI
;
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if
(argt[0] !=
CELL_TYPE
)
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return
E_RES_TYPE
;
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for
(i = 0; i <
columns
; i++)
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SET_NULL_C
(&res[i]);
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return
0;
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}
calc.h
E_RES_TYPE
@ E_RES_TYPE
Definition:
calc.h:14
E_ARG_HI
@ E_ARG_HI
Definition:
calc.h:12
columns
int columns
Definition:
calc.c:11
SET_NULL_C
#define SET_NULL_C(x)
Definition:
calc.h:30
gis.h
CELL
int CELL
Definition:
gis.h:628
raster.h
CELL_TYPE
#define CELL_TYPE
Definition:
raster.h:11
f_null
int f_null(int argc, const int *argt, void **args)
Definition:
xnull.c:9
lib
calc
xnull.c
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