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xeval.c
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#include <grass/gis.h>
#include <grass/raster.h>
#include <grass/calc.h>
/**********************************************************************
eval(..,..,..,x) = x
return last argument
**********************************************************************/
int f_eval(int argc, const int *argt, void **args)
{
int i;
if (argc < 1)
return E_ARG_LO;
if (argt[0] != argt[argc])
return E_RES_TYPE;
switch (argt[argc]) {
case CELL_TYPE: {
CELL *res = args[0];
CELL *arg1 = args[argc];
for (i = 0; i < columns; i++)
if (IS_NULL_C(&arg1[i]))
SET_NULL_C(&res[i]);
else
res[i] = arg1[i];
return 0;
}
case FCELL_TYPE: {
FCELL *res = args[0];
FCELL *arg1 = args[argc];
for (i = 0; i < columns; i++)
if (IS_NULL_F(&arg1[i]))
SET_NULL_F(&res[i]);
else
res[i] = arg1[i];
return 0;
}
case DCELL_TYPE: {
DCELL *res = args[0];
DCELL *arg1 = args[argc];
for (i = 0; i < columns; i++)
if (IS_NULL_D(&arg1[i]))
SET_NULL_D(&res[i]);
else
res[i] = arg1[i];
return 0;
}
default:
return E_INV_TYPE;
}
}
int c_eval(int argc, int *argt)
{
if (argc < 1)
return E_ARG_LO;
argt[0] = argt[argc];
return 0;
}
columns
int columns
Definition calc.c:11
f_eval
int f_eval(int argc, const int *argt, void **args)
Definition xeval.c:11
c_eval
int c_eval(int argc, int *argt)
Definition xeval.c:61