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doc-src/Tutorial/Ifexpr/value
author wenzelm
Mon, 08 Feb 1999 15:55:35 +0100
changeset 6258 1f85c03fb3df
parent 5377 efb799c5ed3c
permissions -rw-r--r--
no deps on compile time sources;
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consts value :: boolex => (nat => bool) => bool
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primrec
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"value (Const b) env = b"
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"value (Var x)   env = env x"
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"value (Neg b)   env = (~ value b env)"
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"value (And b c) env = (value b env & value c env)"
isabelle