abCalc/ops/abCOpSqrt.c
2013-07-27 00:22:50 -05:00

52 lines
827 B
C

/*
abCOpSqrt.c
By: Jeremy Rand
*/
#include <math.h>
#include <stdio.h>
#include "abCError.h"
#include "abCStack.h"
#include "expr/abCExpr.h"
#include "expr/abCExpReal.h"
#include "ops/abCOp.h"
#include "ops/abCOpSqrt.h"
#define SQRT_NAME "SQRT"
static void sqrtExecute(void);
void abCalcOpSqrtInit(void)
{
abCalcOpRegister(SQRT_NAME, sqrtExecute);
}
void sqrtExecute(void)
{
abCalcExpr result;
AB_CALC_OP_ONE_ARG(SQRT_NAME);
if (expr->type != abCalcExprTypeReal) {
abCalcRaiseError(abCalcBadArgTypeError, SQRT_NAME);
return;
}
if (expr->u.real < 0.0) {
abCalcRaiseError(abCalcComplexResultError, SQRT_NAME);
return;
}
abCalcExprRealSet(&result, sqrt(expr->u.real));
abCalcStackExprPop(NULL);
abCalcStackExprPush(&result);
}