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 segofftodbl()       Read a dbl value from a segment/offset address
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 Declaration
   memory.hdr

 Syntax
   func dbl segofftodbl extern
   param value uint uSegment, ;
         value uint uOffset

 Arguments
   uSegment is a segment address.
   uOffset is an offset address.

 Return
   A dbl value.

 Description
   This function returns the dbl located at the specified memory address.

   The function is included for compatibility with earlier Force versions.
   Use the ptr() data type in conjunction with the & and * operators for
   directly writing to explicit memory addresses.

 Example
   #define EXAMPLE_MEMORY
   #include example.hdr

   proc Test_segofftodbl
   vardef
      dbl        eVar
      ptr( dbl ) pMem
   enddef
   eVar := -0.987
   ? eVar                      // access dbl variable directly
   // access dbl variable using function calls
   ? segofftodbl( segmentvalue( eVar ), offsetvalue( eVar ) )
   pMem := &eVar               // access dbl variable using pointer
   ? *pMem
   endproc

   proc main
   Test_segofftodbl()
   endproc