abCalc/ops/abCOpDiv.c

78 lines
1.7 KiB
C

/*
abCOpDiv.c
By: Jeremy Rand
*/
#include <stdio.h>
#include "abCError.h"
#include "abCStack.h"
#include "expr/abCExpr.h"
#include "expr/abCExpReal.h"
#include "expr/abCExprInt.h"
#include "ops/abCOp.h"
#include "ops/abCOpDiv.h"
#define DIV_NAME "/"
static void divExecute(void);
void abCalcOpDivInit(void)
{
abCalcOpRegister(DIV_NAME, divExecute);
}
void divExecute(void)
{
abCalcExpr result;
char expr1Real = 0;
char expr2Real = 0;
AB_CALC_OP_TWO_ARGS(DIV_NAME);
if (expr1->type == abCalcExprTypeReal) {
expr1Real = 1;
if (expr1->u.real == 0.0) {
abCalcRaiseError(abCalcInfiniteResultError, DIV_NAME);
return;
}
} else if (expr1->type == abCalcExprTypeInt) {
if (expr1->u.integer == 0l) {
abCalcRaiseError(abCalcInfiniteResultError, DIV_NAME);
return;
}
} else {
abCalcRaiseError(abCalcBadArgTypeError, DIV_NAME);
return;
}
if (expr2->type == abCalcExprTypeReal) {
expr2Real = 1;
} else if (expr2->type != abCalcExprTypeInt) {
abCalcRaiseError(abCalcBadArgTypeError, DIV_NAME);
return;
}
if ((expr1Real) && (expr2Real)) {
abCalcExprRealSet(&result, expr2->u.real / expr1->u.real);
} else {
if (expr1Real) {
abCalcExprIntSet(&result, expr2->u.integer / (abCalcIntType)expr1->u.real);
} else if (expr2Real) {
abCalcExprIntSet(&result, (abCalcIntType)expr2->u.real / expr1->u.integer);
} else {
abCalcExprIntSet(&result, expr2->u.integer / expr1->u.integer);
}
}
abCalcStackExprPop(NULL);
abCalcStackExprPop(NULL);
abCalcStackExprPush(&result);
}