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4    	/*         SCIP --- Solving Constraint Integer Programs                      */
5    	/*                                                                           */
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7    	/*                                                                           */
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24   	
25   	/**@file   expr_abs.h
26   	 * @ingroup EXPRHDLRS
27   	 * @brief  absolute expression handler
28   	 * @author Stefan Vigerske
29   	 * @author Benjamin Mueller
30   	 */
31   	
32   	/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
33   	
34   	#ifndef __SCIP_EXPR_ABS_H__
35   	#define __SCIP_EXPR_ABS_H__
36   	
37   	
38   	#include "scip/scip.h"
39   	#include "scip/type_expr.h"
40   	
41   	#ifdef __cplusplus
42   	extern "C" {
43   	#endif
44   	
45   	/**@addtogroup EXPRHDLRS
46   	 *
47   	 * @{
48   	 *
49   	 * @name Absolute value expression
50   	 *
51   	 * This expression handler provides the absolute-value function, that is,
52   	 * \f[
53   	 *   x \mapsto |x|.
54   	 * \f]
55   	 *
56   	 * @{
57   	 */
58   	
59   	/** creates an absolute value expression */
60   	SCIP_EXPORT
61   	SCIP_RETCODE SCIPcreateExprAbs(
62   	   SCIP*                 scip,               /**< SCIP data structure */
63   	   SCIP_EXPR**           expr,               /**< pointer where to store expression */
64   	   SCIP_EXPR*            child,              /**< single child */
65   	   SCIP_DECL_EXPR_OWNERCREATE((*ownercreate)), /**< function to call to create ownerdata */
66   	   void*                 ownercreatedata     /**< data to pass to ownercreate */
67   	   );
68   	
69   	/** indicates whether expression is of abs-type */
70   	SCIP_EXPORT
71   	SCIP_Bool SCIPisExprAbs(
72   	   SCIP*                 scip,               /**< SCIP data structure */
73   	   SCIP_EXPR*            expr                /**< expression */
74   	   );
75   	
76   	/** @}
77   	  * @}
78   	  */
79   	
80   	/** creates the handler for absolute expression and includes it into SCIP
81   	 *
82   	 * @ingroup ExprhdlrIncludes
83   	 */
84   	SCIP_EXPORT
85   	SCIP_RETCODE SCIPincludeExprhdlrAbs(
86   	   SCIP*                 scip                /**< SCIP data structure */
87   	   );
88   	
89   	#ifdef __cplusplus
90   	}
91   	#endif
92   	
93   	#endif /* __SCIP_EXPR_ABS_H__ */
94