- revamped indexed objects
[ginac.git] / ginac / flags.h
index 2057baa219f72dcb6475e7174510a32001a026e4..987a4df0260dd894b79a0c3048e6ccaa97c664e0 100644 (file)
@@ -3,7 +3,7 @@
  *  Collection of all flags used through the GiNaC framework. */
 
 /*
- *  GiNaC Copyright (C) 1999 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
 #ifndef __GINAC_FLAGS_H__
 #define __GINAC_FLAGS_H__
 
+namespace GiNaC {
+
 class expand_options {
 public:
-    enum { expand_trigonometric      = 0x0001
-         };
+       enum {
+               expand_trigonometric = 0x0001,
+               expand_indexed = 0x0002
+       };
+};
+
+/** Flags to control series expansion. */
+class series_options {
+public:
+       enum {
+               suppress_branchcut = 0x0001
+       };
+};
+
+/** Switch to control algorithm for determinant computation. */
+class determinant_algo {
+public:
+       enum {
+               automatic,                      ///< Let the system choose
+               gauss,                          ///< Gauss elimiation
+               divfree,                        ///< Division-free elimination
+               laplace,                        ///< Laplace (or minor) elimination
+               bareiss                         ///< Bareiss fraction-free elimination
+       };
+};
+
+/** Switch to control algorithm for linear system solving. */
+class solve_algo {
+public:
+       enum {
+               automatic,                      ///< Let the system choose
+               gauss,                          ///< Gauss elimiation
+               divfree,                        ///< Division-free elimination
+               bareiss                         ///< Bareiss fraction-free elimination
+       };
 };
 
+/** Flags to store information about the state of an object.
+ *  @see basic::flags */
 class status_flags {
 public:
-    enum { dynallocated              = 0x0001,
-           evaluated                 = 0x0002,
-           expanded                  = 0x0004,
-           hash_calculated           = 0x0008
-         };
+       enum {
+               dynallocated    = 0x0001,       ///< Heap-allocated (i.e. created by new if we want to be clever and bypass the stack)
+               evaluated       = 0x0002,       ///< .eval() has already done its job
+               expanded        = 0x0004,       ///< .expand() has already done its job
+               hash_calculated = 0x0008        ///< .calchash() has already done its job
+       };
 };
 
+/** Possible attributes an object can have. */
 class info_flags {
 public:
-    enum { 
-           // answered by class numeric
-           numeric,
-           real,
-           rational,
-           integer,
-           positive,
-           negative,
-           nonnegative,
-           posint,
-           negint,
-           nonnegint,
-           even,
-           odd,
-           prime,
-
-           // answered by class relation
-           relation,
-           relation_equal,
-           relation_not_equal,
-           relation_less,
-           relation_less_or_equal,
-           relation_greater,
-           relation_greater_or_equal,
-
-           // answered by class symbol
-           symbol,
-
-           // answered by class lst
-           list,
-
-           // answered by class exprseq
-           exprseq,
-
-           // answered by classes numeric, symbol, add, mul, power
-           polynomial,
-           integer_polynomial,
-           rational_polynomial,
-           rational_function,
-
-           // answered by class ex
-           normal_form,
-           
-           // answered by class indexed
-           indexed,      // class can carry indices
-           has_indices,  // object has at least one index
-
-           // answered by class idx
-           idx,
-
-           // answered by class coloridx
-           coloridx,
-
-           // answered by class lorentzidx
-           lorentzidx
-    };
+       enum {
+               // answered by class numeric
+               numeric,
+               real,
+               rational,
+               integer,
+               crational,
+               cinteger,
+               positive,
+               negative,
+               nonnegative,
+               posint,
+               negint,
+               nonnegint,
+               even,
+               odd,
+               prime,
+
+               // answered by class relation
+               relation,
+               relation_equal,
+               relation_not_equal,
+               relation_less,
+               relation_less_or_equal,
+               relation_greater,
+               relation_greater_or_equal,
+
+               // answered by class symbol
+               symbol,
+
+               // answered by class lst
+               list,
+
+               // answered by class exprseq
+               exprseq,
+
+               // answered by classes numeric, symbol, add, mul, power
+               polynomial,
+               integer_polynomial,
+               cinteger_polynomial,
+               rational_polynomial,
+               crational_polynomial,
+               rational_function,
+               algebraic,
+
+               // answered by class indexed
+               indexed,      // class can carry indices
+               has_indices,  // object has at least one index
+
+               // answered by class idx
+               idx
+       };
 };
 
 class return_types {
 public:
-    enum { commutative, noncommutative, noncommutative_composite};
+       enum {
+               commutative,
+               noncommutative,
+               noncommutative_composite
+       };
 };
 
 class csrc_types {
@@ -112,4 +151,18 @@ public:
        };
 };
 
+/** Strategies how to clean up the function remember cache.
+ *  @see remember_table */
+class remember_strategies {
+public:
+       enum {
+               delete_never,   ///< Let table grow undefinitely
+               delete_lru,     ///< Least recently used
+               delete_lfu,     ///< Least frequently used
+               delete_cyclic   ///< First (oldest) one in list
+       };
+};
+
+} // namespace GiNaC
+
 #endif // ndef __GINAC_FLAGS_H__