abCalc/ops/abCOpSr.c

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/*
abCOpSr.c
By: Jeremy Rand
*/
#include <stdio.h>
#include "abCError.h"
#include "abCStack.h"
#include "expr/abCExpr.h"
#include "expr/abCExprInt.h"
#include "ops/abCOp.h"
#include "ops/abCOpSr.h"
#define OP_NAME "SR"
static void srExecute(void);
void abCalcOpSrInit(void)
{
abCalcOpRegister(OP_NAME, srExecute);
}
void srExecute(void)
{
abCalcExpr result;
AB_CALC_OP_ONE_ARG(OP_NAME);
if (expr->type != abCalcExprTypeInt) {
abCalcRaiseError(abCalcBadArgTypeError, OP_NAME);
return;
}
abCalcExprIntSet(&result, (expr->u.integer >> 1));
abCalcStackExprPop(NULL);
abCalcStackExprPush(&result);
}