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NSDecimalNumber Additions for Swift
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import Foundation | |
// MARK: - Comparable | |
extension NSDecimalNumber: Comparable {} | |
public func ==(lhs: NSDecimalNumber, rhs: NSDecimalNumber) -> Bool { | |
return lhs.compare(rhs) == .OrderedSame | |
} | |
public func <(lhs: NSDecimalNumber, rhs: NSDecimalNumber) -> Bool { | |
return lhs.compare(rhs) == .OrderedAscending | |
} | |
// MARK: - Arithmetic Operators | |
public prefix func -(value: NSDecimalNumber) -> NSDecimalNumber { | |
return value.decimalNumberByMultiplyingBy(NSDecimalNumber(mantissa: 1, exponent: 0, isNegative: true)) | |
} | |
public func +(lhs: NSDecimalNumber, rhs: NSDecimalNumber) -> NSDecimalNumber { | |
return lhs.decimalNumberByAdding(rhs) | |
} | |
public func -(lhs: NSDecimalNumber, rhs: NSDecimalNumber) -> NSDecimalNumber { | |
return lhs.decimalNumberBySubtracting(rhs) | |
} | |
public func *(lhs: NSDecimalNumber, rhs: NSDecimalNumber) -> NSDecimalNumber { | |
return lhs.decimalNumberByMultiplyingBy(rhs) | |
} | |
public func /(lhs: NSDecimalNumber, rhs: NSDecimalNumber) -> NSDecimalNumber { | |
return lhs.decimalNumberByDividingBy(rhs) | |
} | |
public func ^(lhs: NSDecimalNumber, rhs: Int) -> NSDecimalNumber { | |
return lhs.decimalNumberByRaisingToPower(rhs) | |
} |
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