Generic Commands - A Tool for Partial Correctness Formalisms
Generic Commands - A Tool for Partial Correctness Formalisms
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通用命令 - 部分正确形式主义的工具
DOI:
10.1093/comjnl/20.2.151
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发表时间:
1977
期刊:
影响因子:
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通讯作者:
J. Schwarz
中科院分区:
文献类型:
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作者:
J. Schwarz
A semantic framework for logical formalisms based on partial correctness assertions of the formP{S}Qis given.P{S}Qasserts that ifPholds before execution ofSthenQholds after. Generic commands are introduced. The generic command{P=≥Q}is in a sense the least specified command with preconditionPand postconditionQ. Proof rules and a noneffective semantics are given for generic commands. A proof rule for recursive procedures is given using generic commands.