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doc-src/Tutorial/Ifexpr/bool2if
author wenzelm
Fri, 04 Aug 2000 22:56:52 +0200
changeset 9529 d9434a9277a4
parent 5377 efb799c5ed3c
permissions -rw-r--r--
lemmas atomize = all_eq imp_eq; setup hypsubst_setup;
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consts bool2if :: boolex => ifex
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primrec
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"bool2if (Const b) = CIF b"
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"bool2if (Var x)   = VIF x"
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"bool2if (Neg b)   = IF (bool2if b) (CIF False) (CIF True)"
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"bool2if (And b c) = IF (bool2if b) (bool2if c) (CIF False)"
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