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doc-src/Tutorial/Ifexpr/bool2if
author wenzelm
Fri, 09 Nov 2001 00:16:52 +0100
changeset 12119 fab22bdb1496
parent 5377 efb799c5ed3c
permissions -rw-r--r--
added impose_hyps_tac; robustify insts of tactic emulations;

consts bool2if :: boolex => ifex
primrec
"bool2if (Const b) = CIF b"
"bool2if (Var x)   = VIF x"
"bool2if (Neg b)   = IF (bool2if b) (CIF False) (CIF True)"
"bool2if (And b c) = IF (bool2if b) (bool2if c) (CIF False)"
isabelle