abCalc/ops/abCOpMult.c

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/*
abCOpMult.c
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By: Jeremy Rand
*/
#include <stdio.h>
#include "abCError.h"
#include "abCStack.h"
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#include "expr/abCExpr.h"
#include "expr/abCExpReal.h"
#include "expr/abCExprInt.h"
#include "ops/abCOp.h"
#include "ops/abCOpMult.h"
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#define OP_NAME "*"
static void multExecute(void);
void abCalcOpMultInit(void)
{
abCalcOpRegister(OP_NAME, multExecute);
}
void multExecute(void)
{
abCalcExpr result;
char expr1Real = 0;
char expr2Real = 0;
AB_CALC_OP_TWO_ARGS(OP_NAME);
if (expr1->type == abCalcExprTypeReal) {
expr1Real = 1;
} else if (expr1->type != abCalcExprTypeInt) {
abCalcRaiseError(abCalcBadArgTypeError, OP_NAME);
return;
}
if (expr2->type == abCalcExprTypeReal) {
expr2Real = 1;
} else if (expr2->type != abCalcExprTypeInt) {
abCalcRaiseError(abCalcBadArgTypeError, OP_NAME);
return;
}
if ((expr1Real) && (expr2Real)) {
abCalcExprRealSet(&result, expr2->u.real * expr1->u.real);
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} else {
if (expr1Real) {
abCalcExprIntSet(&result, expr2->u.integer * (abCalcIntType)expr1->u.real);
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} else if (expr2Real) {
abCalcExprIntSet(&result, (abCalcIntType)expr2->u.real * expr1->u.integer);
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} else {
abCalcExprIntSet(&result, expr2->u.integer * expr1->u.integer);
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}
}
abCalcStackExprPop(NULL);
abCalcStackExprPop(NULL);
abCalcStackExprPush(&result);
}