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+/*++
+Copyright (c) 2012 Microsoft Corporation
+
+Module Name:
+
+    z3_algebraic.h
+
+Abstract:
+
+    Additional APIs for handling Z3 algebraic numbers encoded as
+    Z3_ASTs
+
+Author:
+
+    Leonardo de Moura (leonardo) 2012-12-07
+
+Notes:
+
+--*/
+
+#ifndef Z3_ALGEBRAIC_H_
+#define Z3_ALGEBRAIC_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
+    /** \defgroup capi C API */
+    /*@{*/
+
+    /** @name Algebraic Numbers */
+    /*@{*/
+    /**
+       \brief Return \c true if \c a can be used as value in the Z3 real algebraic
+       number package.
+
+       def_API('Z3_algebraic_is_value', BOOL, (_in(CONTEXT), _in(AST)))
+    */
+    bool Z3_API Z3_algebraic_is_value(Z3_context c, Z3_ast a);
+
+    /**
+       \brief Return \c true if \c a is positive, and \c false otherwise.
+
+       \pre Z3_algebraic_is_value(c, a)
+
+       def_API('Z3_algebraic_is_pos', BOOL, (_in(CONTEXT), _in(AST)))
+    */
+    bool Z3_API Z3_algebraic_is_pos(Z3_context c, Z3_ast a);
+
+    /**
+       \brief Return \c true if \c a is negative, and \c false otherwise.
+
+       \pre Z3_algebraic_is_value(c, a)
+
+       def_API('Z3_algebraic_is_neg', BOOL, (_in(CONTEXT), _in(AST)))
+    */
+    bool Z3_API Z3_algebraic_is_neg(Z3_context c, Z3_ast a);
+
+    /**
+       \brief Return \c true if \c a is zero, and \c false otherwise.
+
+       \pre Z3_algebraic_is_value(c, a)
+
+       def_API('Z3_algebraic_is_zero', BOOL, (_in(CONTEXT), _in(AST)))
+    */
+    bool Z3_API Z3_algebraic_is_zero(Z3_context c, Z3_ast a);
+
+    /**
+       \brief Return 1 if \c a is positive, 0 if \c a is zero, and -1 if \c a is negative.
+
+       \pre Z3_algebraic_is_value(c, a)
+
+       def_API('Z3_algebraic_sign', INT, (_in(CONTEXT), _in(AST)))
+    */
+    int Z3_API Z3_algebraic_sign(Z3_context c, Z3_ast a);
+
+    /**
+       \brief Return the value a + b.
+
+       \pre Z3_algebraic_is_value(c, a)
+       \pre Z3_algebraic_is_value(c, b)
+       \post Z3_algebraic_is_value(c, result)
+
+       def_API('Z3_algebraic_add', AST, (_in(CONTEXT), _in(AST), _in(AST)))
+    */
+    Z3_ast Z3_API Z3_algebraic_add(Z3_context c, Z3_ast a, Z3_ast b);
+
+    /**
+       \brief Return the value a - b.
+
+       \pre Z3_algebraic_is_value(c, a)
+       \pre Z3_algebraic_is_value(c, b)
+       \post Z3_algebraic_is_value(c, result)
+
+       def_API('Z3_algebraic_sub', AST, (_in(CONTEXT), _in(AST), _in(AST)))
+    */
+    Z3_ast Z3_API Z3_algebraic_sub(Z3_context c, Z3_ast a, Z3_ast b);
+
+    /**
+       \brief Return the value a * b.
+
+       \pre Z3_algebraic_is_value(c, a)
+       \pre Z3_algebraic_is_value(c, b)
+       \post Z3_algebraic_is_value(c, result)
+
+       def_API('Z3_algebraic_mul', AST, (_in(CONTEXT), _in(AST), _in(AST)))
+    */
+    Z3_ast Z3_API Z3_algebraic_mul(Z3_context c, Z3_ast a, Z3_ast b);
+
+    /**
+       \brief Return the value a / b.
+
+       \pre Z3_algebraic_is_value(c, a)
+       \pre Z3_algebraic_is_value(c, b)
+       \pre !Z3_algebraic_is_zero(c, b)
+       \post Z3_algebraic_is_value(c, result)
+
+       def_API('Z3_algebraic_div', AST, (_in(CONTEXT), _in(AST), _in(AST)))
+    */
+    Z3_ast Z3_API Z3_algebraic_div(Z3_context c, Z3_ast a, Z3_ast b);
+
+    /**
+       \brief Return the a^(1/k)
+
+       \pre Z3_algebraic_is_value(c, a)
+       \pre k is even => !Z3_algebraic_is_neg(c, a)
+       \post Z3_algebraic_is_value(c, result)
+
+       def_API('Z3_algebraic_root', AST, (_in(CONTEXT), _in(AST), _in(UINT)))
+    */
+    Z3_ast Z3_API Z3_algebraic_root(Z3_context c, Z3_ast a, unsigned k);
+
+    /**
+       \brief Return the a^k
+
+       \pre Z3_algebraic_is_value(c, a)
+       \post Z3_algebraic_is_value(c, result)
+
+       def_API('Z3_algebraic_power', AST, (_in(CONTEXT), _in(AST), _in(UINT)))
+    */
+    Z3_ast Z3_API Z3_algebraic_power(Z3_context c, Z3_ast a, unsigned k);
+
+    /**
+       \brief Return \c true if a < b, and \c false otherwise.
+
+       \pre Z3_algebraic_is_value(c, a)
+       \pre Z3_algebraic_is_value(c, b)
+
+       def_API('Z3_algebraic_lt', BOOL, (_in(CONTEXT), _in(AST), _in(AST)))
+    */
+    bool Z3_API Z3_algebraic_lt(Z3_context c, Z3_ast a, Z3_ast b);
+
+    /**
+       \brief Return \c true if a > b, and \c false otherwise.
+
+       \pre Z3_algebraic_is_value(c, a)
+       \pre Z3_algebraic_is_value(c, b)
+
+       def_API('Z3_algebraic_gt', BOOL, (_in(CONTEXT), _in(AST), _in(AST)))
+    */
+    bool Z3_API Z3_algebraic_gt(Z3_context c, Z3_ast a, Z3_ast b);
+
+    /**
+       \brief Return \c true if a <= b, and \c false otherwise.
+
+       \pre Z3_algebraic_is_value(c, a)
+       \pre Z3_algebraic_is_value(c, b)
+
+       def_API('Z3_algebraic_le', BOOL, (_in(CONTEXT), _in(AST), _in(AST)))
+    */
+    bool Z3_API Z3_algebraic_le(Z3_context c, Z3_ast a, Z3_ast b);
+
+    /**
+       \brief Return \c true if a >= b, and \c false otherwise.
+
+       \pre Z3_algebraic_is_value(c, a)
+       \pre Z3_algebraic_is_value(c, b)
+
+       def_API('Z3_algebraic_ge', BOOL, (_in(CONTEXT), _in(AST), _in(AST)))
+    */
+    bool Z3_API Z3_algebraic_ge(Z3_context c, Z3_ast a, Z3_ast b);
+
+    /**
+       \brief Return \c true if a == b, and \c false otherwise.
+
+       \pre Z3_algebraic_is_value(c, a)
+       \pre Z3_algebraic_is_value(c, b)
+
+       def_API('Z3_algebraic_eq', BOOL, (_in(CONTEXT), _in(AST), _in(AST)))
+    */
+    bool Z3_API Z3_algebraic_eq(Z3_context c, Z3_ast a, Z3_ast b);
+
+    /**
+       \brief Return \c true if a != b, and \c false otherwise.
+
+       \pre Z3_algebraic_is_value(c, a)
+       \pre Z3_algebraic_is_value(c, b)
+
+       def_API('Z3_algebraic_neq', BOOL, (_in(CONTEXT), _in(AST), _in(AST)))
+    */
+    bool Z3_API Z3_algebraic_neq(Z3_context c, Z3_ast a, Z3_ast b);
+
+    /**
+       \brief Given a multivariate polynomial p(x_0, ..., x_{n-1}, x_n), returns the
+       roots of the univariate polynomial p(a[0], ..., a[n-1], x_n).
+
+       \pre p is a Z3 expression that contains only arithmetic terms and free variables.
+       \pre forall i in [0, n) Z3_algebraic_is_value(c, a[i])
+       \post forall r in result Z3_algebraic_is_value(c, result)
+
+       def_API('Z3_algebraic_roots', AST_VECTOR, (_in(CONTEXT), _in(AST), _in(UINT), _in_array(2, AST)))
+    */
+    Z3_ast_vector Z3_API Z3_algebraic_roots(Z3_context c, Z3_ast p, unsigned n, Z3_ast a[]);
+
+    /**
+       \brief Given a multivariate polynomial p(x_0, ..., x_{n-1}), return the
+       sign of p(a[0], ..., a[n-1]).
+
+       \pre p is a Z3 expression that contains only arithmetic terms and free variables.
+       \pre forall i in [0, n) Z3_algebraic_is_value(c, a[i])
+
+       def_API('Z3_algebraic_eval', INT, (_in(CONTEXT), _in(AST), _in(UINT), _in_array(2, AST)))
+    */
+    int Z3_API Z3_algebraic_eval(Z3_context c, Z3_ast p, unsigned n, Z3_ast a[]);
+
+    /*@}*/
+    /*@}*/
+
+#ifdef __cplusplus
+}
+#endif // __cplusplus
+
+#endif