Example MATRIX.PRT
; MATRIX
;
; Program for Proteus
;
; (C) 1998-2004 Simone Zanella Productions
;
; Functions to manipulate bidimensional matrices.


FUNCTION MatNew(row, col)

  ; Create a new matrix of size row by col
  hmat = VECNEW(row)
  FOR r = 1 TO row
    VECSET(hmat, r, VECNEW(col))
  NEXT
RETURN hmat


FUNCTION MatLen(hmat)

; Return the number of items in the matrix, assuming
; that each row has the same length
RETURN MUL(VECLEN(hmat), VECLEN(VECGET(hmat, 1)))


FUNCTION MatGet(hmat, row, col)

; Returns item row, col in matrix hmat
RETURN VECGET(VECGET(hmat, row), col)


FUNCTION MatSet(hmat, row, col, val)

; Sets to val item (row, col) in matrix hmat
RETURN VECSET(VECGET(hmat, row), col, val)


FUNCTION MatFree(hmat)

  ; Frees memory reserved to matrix hmat
  limit = VECLEN(hmat)
  FOR row = 1 TO limit
    VECFREE(VECGET(hmat, row))
  NEXT
RETURN VECFREE(hmat)
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