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SYD# return the sum-of-years' digits depreciation of an asset for a
specified period.
 
SYD# (cost#, salvage#, life#, period#, status%)
    ■ The argument life# is the useful life of the asset (or the number of
      periods over which the asset is being depreciated).
    ■ The arguments life# and period# must use the same units. For example,
      if life is given in months, period must also be given in months.
    ■ The argument status% can be any variable that returns information
      about the success or failure of the calculation. The value of status%
      will be 0 if the calculation was successful, and 1 if it was not.
 
Important
    ■ To use SYD# in the QBX environment, use the FINANCER.QLB Quick
      library. To use SYD# outside the QBX environment, link your program
      with the appropriate FINANCxx.LIB file. Depending on the compiler
      options you chose when you installed BASIC, one or more of the
      following files will be available:
 
           Filename         Compiler options
           ════════════     ═════════════════════════════════════════════
           FINANCER.LIB     80x87 or emulator math; DOS or OS/2 real mode
           FINANCAR.LIB     Alternate math; DOS or OS/2 real mode
           FINANCEP.LIB     80x87 or emulator math, OS/2 protected mode
           FINANCAP.LIB     Alternate math; OS/2 protected mode
 
    ■ The FINANC.BI header file contains the necessary function
      declarations for SYD#.
    ■ For more information on using libraries, see "Creating and Using
      Quick Libraries" and "Using LINK and LIB" in the BASIC Programmer's
      Guide.