doc-src/IsarAdvanced/Codegen/Thy/examples/lexicographic.ML
author wenzelm
Tue, 14 Aug 2007 13:20:17 +0200
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Primitive definition forms.
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structure HOL = 
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struct
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type 'a eq = {eq : 'a -> 'a -> bool};
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fun eq (A_:'a eq) = #eq A_;
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type 'a ord = {less_eq : 'a -> 'a -> bool, less : 'a -> 'a -> bool};
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fun less_eq (A_:'a ord) = #less_eq A_;
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fun less (A_:'a ord) = #less A_;
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end; (*struct HOL*)
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structure Codegen = 
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struct
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fun less_eq_product (A1_, A2_) B_ (x1, y1) (x2, y2) =
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  HOL.less A2_ x1 x2 orelse HOL.eq A1_ x1 x2 andalso HOL.less_eq B_ y1 y2;
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end; (*struct Codegen*)