GRASS GIS 8 Programmer's Manual
8.4.1(2025)-45ca3179ab
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xbitor.c
Go to the documentation of this file.
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#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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bitor(a,b,c,...) = a | b | c | ...
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****************************************************************/
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int
f_bitor
(
int
argc,
const
int
*argt,
void
**args)
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{
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CELL *res = args[0];
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CELL **argz = (CELL **)args;
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int
i, j;
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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] != CELL_TYPE)
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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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if
(IS_NULL_C(&argz[j][i])) {
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SET_NULL_C(&res[i]);
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break
;
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}
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res[i] |= argz[j][i];
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}
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}
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return
0;
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}
columns
int columns
Definition
calc.c:11
f_bitor
int f_bitor(int argc, const int *argt, void **args)
Definition
xbitor.c:9
calc
xbitor.c
Generated on Sat Jun 21 2025 21:07:27 for GRASS GIS 8 Programmer's Manual by
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