[Axiom-developer] Internal Error : Interpreter code generation failed for expression...

[Michael Becker]

    Hi,

         I have  the followin input-file


------- ma2.input -----------------------------------
fallingPower : (INT,NNI) -> INT

fallingPower (p,0) == 1
fallingPower (p,n) == p*fallingPower(p-1,n-1)

test0 () ==
   n : Matrix Integer
   n := new(3,3,0)
   for i in 1..3 repeat _
         for j in 1..3 repeat _
         n(i,j) := fallingPower(i+j,j)
   n

test1 () ==
   n : Matrix Integer
   n := new(3,3,0)
   for i in 1..3 repeat _
         for j in 1..3 repeat _
         n(i,j) := i+j
   n

test2 () ==
   n : Matrix Integer  
   n := new(3,3,0)
   for i in 1..3 repeat _
         for j in 1..3 repeat _
         n(i,j) := fallingPower(i,j)
   n


test2()
test1()
test0()
--------------------------------------------------


 reading this in axiom gives the follwing error


--------------------------------------------------

                       AXIOM Computer Algebra System
                          Version: Axiom (May 2009)
                Timestamp: Sunday June 21, 2009 at 23:34:35
-----------------------------------------------------------------------------
   Issue )copyright to view copyright notices.
   Issue )summary for a summary of useful system commands.
   Issue )quit to leave AXIOM and return to shell.
-----------------------------------------------------------------------------

   Re-reading compress.daase   Re-reading interp.daase
   Re-reading operation.daase
   Re-reading category.daase
   Re-reading browse.daase
(1) ->
(1) -> )re ma2
(1) ->


fallingPower : (INT,NNI) -> INT

                                                                   Type: Void

fallingPower (p,0) == 1

                                                                   Type: Void
fallingPower (p,n) == p*fallingPower(p-1,n-1)

                                                                   Type: Void

test0 () ==
   n : Matrix Integer
   n := new(3,3,0)
   for i in 1..3 repeat _
         for j in 1..3 repeat _
         n(i,j) := fallingPower(i+j,j)
   n

                                                                   Type: Void

test1 () ==
   n : Matrix Integer
   n := new(3,3,0)
   for i in 1..3 repeat _
         for j in 1..3 repeat _
         n(i,j) := i+j
   n

                                                                   Type: Void

test2 () ==
   n : Matrix Integer
   n := new(3,3,0)
   for i in 1..3 repeat _
         for j in 1..3 repeat _
         n(i,j) := fallingPower(i,j)
   n

                                                                   Type: Void


test2()

   Loading /usr_local/axiom0509/mnt/opensuse/algebra/MATRIX.o for
      domain Matrix
   Loading /usr_local/axiom0509/mnt/opensuse/algebra/IIARRAY2.o for
      domain InnerIndexedTwoDimensionalArray
   There are no library operations named fallingPower
      Use HyperDoc Browse or issue
                            )what op fallingPower
      to learn if there is any operation containing " fallingPower " in
      its name.
   Cannot find a definition or applicable library operation named
      fallingPower with argument type(s)
                                   Integer
                                   Integer

      Perhaps you should use "@" to indicate the required return type,
      or "$" to specify which version of the function you need.
   AXIOM will attempt to step through and interpret the code.
   Compiling function fallingPower with type (Integer,
      NonNegativeInteger) -> Integer
   Compiling function test2 with type () -> Matrix Integer
   Compiling function G1997 with type Integer -> Boolean

   Loading /usr_local/axiom0509/mnt/opensuse/algebra/MATCAT-.o for
      domain MatrixCategory&
   Loading /usr_local/axiom0509/mnt/opensuse/algebra/ARR2CAT-.o for
      domain TwoDimensionalArrayCategory&
        +1  0  0+
        |       |
   (7)  |2  2  0|
        |       |
        +3  6  6+
                                                         Type: Matrix Integer
test1()

   Compiling function test1 with type () -> Matrix Integer

        +2  3  4+
        |       |
   (8)  |3  4  5|
        |       |
        +4  5  6+
                                                         Type: Matrix Integer
test0()

   Compiling function test0 with type () -> Matrix Integer
   Loading /usr_local/axiom0509/mnt/opensuse/algebra/UPMP.o for package
      UnivariatePolynomialMultiplicationPackage
   Loading /usr_local/axiom0509/mnt/opensuse/algebra/UP.o for domain
      UnivariatePolynomial
   Internal Error
   Interpreter code generation failed for expression
      (IF (= |#2| 0) 1 (* |#1| (|fallingPower| (- |#1| 1) (- |#2| 1))))



--------------------------------------------------


 
   i can't see whats wrong with 'test0'.


    -- Michael



  ps:  same result in fricas or open-axiom.

   





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