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          Financial Functions available in Professional Edition only
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 Returns the internal rate of return for a series of periodic cash flows
 (payments and receipts). Requires FINANCE.QLB (FINANCE.LIB when compiling);
 include FINANCE.BI.
 
    IRR# (valuearray#(), valuecount%, guess#, status%)
 
    ■ valuearray#()     Array of cash flow values
 
    ■ valuecount%       Total number of items in the cash flow array
 
    ■ guess#            Value you guess is close to the result of IRR#
 
    ■ status%           Variable that returns a value indicating calculation
                        failure or success:
                        0 = success
                        1 = failure
 
 See Also
    ◄Financial Function Summary►   ◄$INCLUDE Metacommand►   ◄Quick Libraries►