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doc-src/Tutorial/Datatype/abevala
author wenzelm
Fri, 03 Mar 2000 21:00:58 +0100
changeset 8335 4c117393e4e6
parent 5851 15ce4c1c8313
permissions -rw-r--r--
added multi_resolveq, resolveq_tac;
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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15ce4c1c8313 New section on advanced datatypes.
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primrec
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  "evala env (IF b a1 a2) =
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     (if evalb env b then evala env a1 else evala env a2)"
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  "evala env (Sum a1 a2) = evala env a1 + evala env a2"
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  "evala env (Diff a1 a2) = evala env a1 - evala env a2"
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  "evala env (Var v) = env v"
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  "evala env (Num n) = n"
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