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doc-src/Tutorial/Recdef/gcd
author wenzelm
Wed, 14 Nov 2001 23:16:05 +0100
changeset 12186 9b7026a0b0ed
parent 9255 2ceb11a2e190
permissions -rw-r--r--
added Induct/Binary_Trees.thy, Induct/Datatypes.thy; removed ex/Data.ML ex/Data.thy ex/Enum.ML ex/Enum.thy;

recdef gcd "measure (%(m,n).n)"
  simpset "simpset() addsimps [mod_less_divisor]"
  "gcd (m, n) = (if n=0 then m else gcd(n, m mod n))"
isabelle