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doc-src/Tutorial/Ifexpr/bool2if
author kleing
Mon, 15 Oct 2001 21:04:32 +0200
changeset 11787 85b3735a51e1
parent 5377 efb799c5ed3c
permissions -rw-r--r--
canonical 'cases'/'induct' rules for n-tuples (n=3..7) (really belongs to theory Product_Type, but doesn't work there yet)
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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)"
isabelle