New instance with given value. Note an NSDecimal may be created using the function NSDecimalFromString() .

New instance by component. Note that the precision of this initializer is limited.

New instance from string. Arbitrary precision is preserved, though calling one of the decimalNumberBy... methods will return a result constrained by the current scale. Number format is parsed according to current default locale.

New instance from string. Arbitrary precision is preserved, though calling one of the decimalNumberBy... methods will return a result constrained by the current scale. Number format is parsed according to given locale.

Returns the default rounding/precision/exception handling behavior, which is same as [NSDecimalNumberHandler +defaultDecimalNumberHandler] unless it has been explicitly set otherwise.

Return maximum positive value that can be represented.

Return minimum negative value (not the smallest positive value) that can be represented.

Return a fixed value representing an NaN.

Return a constant object with a value of one.

Sets the default rounding/precision/exception handling behavior to the given behavior. If this is not called, behavior defaults to [NSDecimalNumberHandler +defaultDecimalNumberHandler] .

Return a constant object with a value of zero.

Compares with other number, returning less, greater, or equal.

Adds self to decimalNumber and returns new result, using +defaultBehavior for rounding/precision/error handling.

Adds self to decimalNumber and returns new result, using given behavior for rounding/precision/error handling.

Divides self by decimalNumber and returns new result, using +defaultBehavior for rounding/precision/error handling.

Divides self by decimalNumber and returns new result, using given behavior for rounding/precision/error handling.

Multiplies self by decimalNumber and returns new result, using +defaultBehavior for rounding/precision/error handling.

Multiplies self by decimalNumber and returns new result, using given behavior for rounding/precision/error handling.

Multiplies self by given power of 10 and returns new result, using +defaultBehavior for rounding/precision/error handling.

Multiplies self by given power of 10 and returns new result, using given behavior for rounding/precision/error handling.

Raises self to given positive integer power and returns new result, using +defaultBehavior for rounding/precision/error handling.

Raises self to given positive integer power and returns new result, using given behavior for rounding/precision/error handling.

Returns rounded version of underlying decimal.

Subtracts decimalNumber from self and returns new result, using +defaultBehavior for rounding/precision/error handling.

Subtracts decimalNumber from self and returns new result, using given behavior for rounding/precision/error handling.

Return underlying value as an NSDecimal structure.

Returns string version of number formatted according to locale.

Returns underlying value as a double, which may be an approximation if precision greater than the default of 38.

Initialize with given value. Note an NSDecimal may be created using the function NSDecimalFromString() .

Initialize by component. Note that the precision of this initializer is limited.

Initialize from string. Arbitrary precision is preserved, though calling one of the decimalNumberBy... methods will return a result constrained by the current scale. Number format is parsed according to current default locale.

Initialize from string. Arbitrary precision is preserved, though calling one of the decimalNumberBy... methods will return a result constrained by the current scale. Number format is parsed according to given locale.

Returns the Objective-C type ( @encode(...) compatible) of the data contained NSDecimalNumber, which is by convention "d" (for double), even though this is not strictly accurate.

Constructor setting all behavior. (For more precise control over error handling, create your own class implementing the <NSDecimalNumberBehaviors> protocol.)

Provides an instance implementing the default behavior for the NSDecimalNumber class. 38 decimal digits, rounded to closest return value (NSRoundPlain). Exceptions raised on overflow, underflow, and divide by zero.

Initializer setting all behavior. (For more precise control over error handling, create your own class implementing the <NSDecimalNumberBehaviors> protocol.)

Obtaining an NSDecimalNumber version of an ordinary NSNumber.
Returns an NSDecimal representation of the number. Float and double values may not be converted exactly

Specifies behavior when, in the course of applying method to leftOperand and rightOperand, an NSDecimalNumber instance encounters given error.

error has four possible constant values:

NSCalculationLossOfPrecision

The number can't be represented in 38 significant digits.

NSCalculationOverflow

The number is too large to represent.

NSCalculationUnderflow

The number is too small to represent.

NSCalculationDivideByZero

The caller tried to divide by 0.

Behavior on error can be one of the following:

• Raise an exception.
• Return nil. The calling method will return its value as though no error had occurred. If error is NSCalculationLossOfPrecision, method will return an imprecise value, constrained to 38 significant digits. If error is NSCalculationUnderflow or NSCalculationOverflow, method will return NSDecimalNumber 's notANumber. You shouldn't return nil if error is NSDivideByZero.
• Correct the error and return a valid NSDecimalNumber. The calling method will use this as its own return value.

Specifies how NSDecimalNumber 's decimalNumberBy... methods round their return values. This should be set to one of the following constants:

NSRoundDown

Always round down.

NSRoundUp

Always round up.

NSRoundPlain

Round to the closest possible return value. Halfway (e.g..5) rounds up for positive numbers, down for negative (towards larger absolute value).

NSRoundBankers

Round to the closest possible return value, but halfway (e.g..5) rounds towards possibility whose last digit is even.

Specifies the precision of the values returned by NSDecimalNumber 's decimalNumberBy... methods, in terms of the number of digits allowed after the decimal point. This can be negative, implying that the precision should be, e.g., 100's, 1000's, etc.. For unlimited precision, set to NSDecimalNoScale.