Added first FPA API functions.

Signed-off-by: Christoph M. Wintersteiger <cwinter@microsoft.com>

src/api/z3_fpa.h

@@ -0,0 +1,82 @@
+/*++
+Copyright (c) 2013 Microsoft Corporation
+
+Module Name:
+
+    z3_fpa.h
+
+Abstract:
+
+    Additional APIs for floating-point arithmetic (FPA).
+
+Author:
+
+    Christoph M. Wintersteiger (cwinter) 2013-06-05
+
+Notes:
+    
+--*/
+#ifndef _Z3_FPA_H_
+#define _Z3_FPA_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
+    /**
+        \brief Create a rounding mode sort.
+     
+        def_API('Z3_mk_fpa_rounding_mode_sort', SORT, (_in(CONTEXT),))
+    */
+    Z3_sort Z3_API Z3_mk_fpa_rounding_mode_sort(__in Z3_context c);
+
+    /**
+        \brief Create a numeral of rounding mode sort which represents the NearestTiesToEven rounding mode.
+     
+        def_API('Z3_mk_fpa_round_nearest_ties_to_even', AST, (_in(CONTEXT),))
+    */
+    Z3_ast Z3_API Z3_mk_fpa_round_nearest_ties_to_even(__in Z3_context c);
+
+    /**
+        \brief Create a numeral of rounding mode sort which represents the NearestTiesToAway rounding mode.
+     
+        def_API('Z3_mk_fpa_round_nearest_ties_to_away', AST, (_in(CONTEXT),))
+    */
+    Z3_ast Z3_API Z3_mk_fpa_round_nearest_ties_to_away(__in Z3_context c);
+
+    /**
+        \brief Create a numeral of rounding mode sort which represents the TowardPositive rounding mode.
+     
+        def_API('Z3_mk_fpa_round_toward_positive', AST, (_in(CONTEXT),))
+    */
+    Z3_ast Z3_API Z3_mk_fpa_round_toward_positive(__in Z3_context c);    
+
+    /**
+        \brief Create a numeral of rounding mode sort which represents the TowardNegative rounding mode.
+     
+        def_API('Z3_mk_fpa_round_toward_negative', AST, (_in(CONTEXT),))
+    */
+    Z3_ast Z3_API Z3_mk_fpa_round_toward_negative(__in Z3_context c);    
+
+    /**
+        \brief Create a numeral of rounding mode sort which represents the TowardZero rounding mode.
+     
+        def_API('Z3_mk_fpa_round_toward_zero', AST, (_in(CONTEXT),))
+    */
+    Z3_ast Z3_API Z3_mk_fpa_round_toward_zero(__in Z3_context c);
+
+
+    /**
+        \brief Create a floating point sort.
+     
+        def_API('Z3_mk_fpa_sort', SORT, (_in(CONTEXT), _in(UINT), _in(UINT)))
+
+        \remark ebits must be larger than 1 and sbits must be larger than 2.
+    */
+    Z3_sort Z3_API Z3_mk_fpa_sort(__in Z3_context c, __in unsigned ebits, __in unsigned sbits);
+  
+#ifdef __cplusplus
+};
+#endif // __cplusplus
+
+#endif