| Welsh A. The Specification, Design and Implementation of NDB, M.Sc. Thesis, Dept. of Comp. Science, Univ. of Manchester, October 1982. |
....refinement decisions are taken on BODY , this step is proved correct by using rules devoted to while loop decomposition [3] The example below illustrates an alternative, transformational approach to operation refinement in VDM. The specification used in the example, borrowed from [11] see also [12, 13]) appears in an intermediate model between an abstract mapping Key m Data and its realization (in Pascal) in terms of binary trees. An intermediate type BinT ree is defined as follows: BinT ree = BinNode] BinNode : LT: BinTree K: Key D: Data RT: BinTree subject to the data type ....
Welsh A. The Specification, Design and Implementation of NDB, M.Sc. Thesis, Dept. of Comp. Science, Univ. of Manchester, October 1982.
....level, only conventions for making use of the other notation to describe abstract machines. It is worth noting that Z notation the first two levels has been used with a different set of conventions for other purposes, such as specifying real time systems. 3 Originally formally specified in [Wel82] and revised in [Wal90] this was used as a challenge problem in [FJ90] to which a Z response is given in [Hay92] 4 The description of the NDB state presented here is given postfacto rather than attempting to emulate the process by which specifications are produced. two elements: a from value ....
A. Welsh. The specification, design and implementation of NDB. Master's thesis, University of Manchester, October 1982.
No context found.
A. Welsh. The Specication, Design and Implementation of NDB. Master's thesis, Univ. of Manchester, Oct. 1982.
No context found.
A. Welsh. The specification, design and implementation of NDB. Master's thesis, University of Manchester, October 1982.
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