GRASS GIS 8 Programmer's Manual
8.5.0dev(2024)-d6dec75dd4
xor.c
Go to the documentation of this file.
1
#include <
grass/gis.h
>
2
#include <
grass/raster.h
>
3
#include <
grass/calc.h
>
4
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/****************************************************************
6
or(a,b,c,...) = a || b || c || ...
7
****************************************************************/
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9
int
f_or
(
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, j;
13
14
if
(argc < 1)
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return
E_ARG_LO
;
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if
(argt[0] !=
CELL_TYPE
)
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return
E_RES_TYPE
;
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for
(i = 1; i <= argc; i++)
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if
(argt[i] != argt[0])
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return
E_ARG_TYPE
;
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for
(i = 0; i <
columns
; i++) {
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res[i] = 0;
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for
(j = 1; j <= argc; j++) {
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CELL
*arg = args[j];
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if
(
IS_NULL_C
(&arg[i])) {
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SET_NULL_C
(&res[i]);
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break
;
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}
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if
(arg[i])
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res[i] = 1;
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}
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}
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return
0;
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}
calc.h
E_RES_TYPE
@ E_RES_TYPE
Definition:
calc.h:14
E_ARG_TYPE
@ E_ARG_TYPE
Definition:
calc.h:13
E_ARG_LO
@ E_ARG_LO
Definition:
calc.h:11
IS_NULL_C
#define IS_NULL_C(x)
Definition:
calc.h:26
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_or
int f_or(int argc, const int *argt, void **args)
Definition:
xor.c:9
lib
calc
xor.c
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