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add tactic descriptions

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Nikolaj Bjorner 2022-12-14 20:38:28 -08:00
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src/tactic/arith/purify_arith_tactic.h
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@ -42,7 +42,28 @@ Author:
Leonardo de Moura (leonardo) 2011-12-30.
Revision History:
Tactic Documentation:
## Tactic purify-arith
### Short Description
Eliminate unnecessary operators: -, /, div, mod, rem, is-int, to-int, ^, root-objects.
These operators can be replaced by introcing fresh variables and using multiplication and addition.
### Example
```z3
(declare-const x Int)
(declare-const y Int)
(declare-const z Int)
(declare-const u Int)
(declare-const v Int)
(declare-const w Int)
(assert (= (div x 3) y))
(assert (= (mod z 4) u))
(assert (> (mod v w) u))
(apply purify-arith)
```
--*/
#pragma once