/**
 * Copyright: Copyright (c) 2009 Jacob Carlborg.
 * Authors: Jacob Carlborg
 * Version: Initial created: Aug 3, 2009 
 * License: $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost Software License 1.0)
 */
module dstep.foundation.NSDecimal;

import dstep.foundation.NSDictionary;
import dstep.foundation.NSObjCRuntime;
import dstep.limits;
import dstep.objc.bridge.Bridge;
import dstep.objc.objc : id;

alias NSUInteger NSRoundingMode;
alias NSUInteger NSCalculationError;

enum
{
	NSRoundPlain,
	NSRoundDown,
	NSRoundUp,
	NSRoundBankers
}

enum
{
	NSCalculationNoError = 0,
	NSCalculationLossOfPrecision,
	NSCalculationUnderflow,
	NSCalculationOverflow,
	NSCalculationDivideByZero
}

struct NSDecimal
{
	int _exponent;
	uint _length;
	uint _isNegative;
	uint _isCompact;
	uint _reserved;
	unsigned short* _mantissa;
}

NSString NSDecimalString (NSDecimal* dcm, Object locale)
{
	return Bridge.invokeObjcFunction!(NSString, bindings.NSDecimalString, NSDecimal*, Object)(dcm, locale);
}

extern (C)
{
	void NSDecimalCopy (NSDecimal* destination, NSDecimal* source);
	void NSDecimalCompact (NSDecimal* number);
	int NSDecimalCompare (NSDecimal* leftOperand, NSDecimal* rightOperand);
	void NSDecimalRound (NSDecimal* result, NSDecimal* number, NSInteger scale, uint roundingMode);
	uint NSDecimalNormalize (NSDecimal* number1, NSDecimal* number2, uint roundingMode);
	uint NSDecimalAdd (NSDecimal* result, NSDecimal* leftOperand, NSDecimal* rightOperand, uint roundingMode);
	uint NSDecimalSubtract (NSDecimal* result, NSDecimal* leftOperand, NSDecimal* rightOperand, uint roundingMode);
	uint NSDecimalMultiply (NSDecimal* result, NSDecimal* leftOperand, NSDecimal* rightOperand, uint roundingMode);
	uint NSDecimalDivide (NSDecimal* result, NSDecimal* leftOperand, NSDecimal* rightOperand, uint roundingMode);
	uint NSDecimalPower (NSDecimal* result, NSDecimal* number, NSUInteger power, uint roundingMode);
	uint NSDecimalMultiplyByPowerOf10 (NSDecimal* result, NSDecimal* number, short power, uint roundingMode);
}