X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?a=blobdiff_plain;f=ginac%2Fflags.h;h=02a114b34837131a3300dec2b750ecb5a67ced9f;hb=452e51c8a3b84c368ae3ba2e60dacbc1985e7b5c;hp=35cb6e3b0803e62323d09aa5cad55baf2960734c;hpb=80355fb3d929ecec98171db7a0286b8eda877669;p=ginac.git

diff --git a/ginac/flags.h b/ginac/flags.h
index 35cb6e3b..02a114b3 100644
--- a/ginac/flags.h
+++ b/ginac/flags.h
@@ -3,7 +3,7 @@
  *  Collection of all flags used through the GiNaC framework. */
 
 /*
- *  GiNaC Copyright (C) 1999-2003 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2019 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
@@ -17,11 +17,11 @@
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
-#ifndef __GINAC_FLAGS_H__
-#define __GINAC_FLAGS_H__
+#ifndef GINAC_FLAGS_H
+#define GINAC_FLAGS_H
 
 namespace GiNaC {
 
@@ -30,7 +30,17 @@ class expand_options {
 public:
 	enum {
 		expand_indexed = 0x0001,      ///< expands (a+b).i to a.i+b.i
-		expand_function_args = 0x0002 ///< expands the arguments of functions
+		expand_function_args = 0x0002, ///< expands the arguments of functions
+		expand_rename_idx = 0x0004, ///< used internally by mul::expand()
+		expand_transcendental = 0x0008 ///< expands transcendental functions like log and exp
+	};
+};
+
+/** Flags to control the behavior of has(). */
+class has_options {
+public:
+	enum {
+		algebraic = 0x0001              ///< enable algebraic matching
 	};
 };
 
@@ -42,8 +52,23 @@ public:
 		subs_no_pattern = 0x0001, // for backwards compatibility
 		algebraic = 0x0002,              ///< enable algebraic substitutions
 		subs_algebraic = 0x0002,  // for backwards compatibility
-        pattern_is_product = 0x0004,     ///< used internally by expairseq::subschildren()
-        pattern_is_not_product = 0x0008  ///< used internally by expairseq::subschildren()
+		pattern_is_product = 0x0004,     ///< used internally by expairseq::subschildren()
+		pattern_is_not_product = 0x0008, ///< used internally by expairseq::subschildren()
+		no_index_renaming = 0x0010,
+		// To indicate that we want to substitute an index by something that
+		// is not an index. Without this flag the index value would be
+		// substituted in that case.
+		really_subs_idx = 0x0020
+	};
+};
+
+/** Domain of an object */
+class domain {
+public:
+	enum {
+		complex,
+		real,
+		positive
 	};
 };
 
@@ -157,7 +182,15 @@ public:
 		 *  linear systems.  In contrast to division-free elimination it only
 		 *  has a linear expression swell.  For two-dimensional systems, the
 		 *  two algorithms are equivalent, however. */
-		bareiss
+		bareiss,
+		/** Markowitz-ordered Gaussian elimination. Same as the usual
+		 *  Gaussian elimination, but with additional effort spent on
+		 *  selecting pivots that minimize fill-in. Faster than the
+		 *  methods above for large sparse matrices (particularly with
+		 *  symbolic coefficients), otherwise slightly slower than
+		 *  Gaussian elimination.
+		 */
+		markowitz
 	};
 };
 
@@ -169,7 +202,13 @@ public:
 		dynallocated    = 0x0001, ///< heap-allocated (i.e. created by new if we want to be clever and bypass the stack, @see ex::construct_from_basic() )
 		evaluated       = 0x0002, ///< .eval() has already done its job
 		expanded        = 0x0004, ///< .expand(0) has already done its job (other expand() options ignore this flag)
-		hash_calculated = 0x0008  ///< .calchash() has already done its job
+		hash_calculated = 0x0008, ///< .calchash() has already done its job
+		not_shareable   = 0x0010, ///< don't share instances of this object between different expressions unless explicitly asked to (used by ex::compare())
+		has_indices	= 0x0020,
+		has_no_indices	= 0x0040, // ! (has_indices || has_no_indices) means "don't know"
+		is_positive	= 0x0080,
+		is_negative	= 0x0100,
+		purely_indefinite = 0x0200  // If set in a mul, then it does not contains any terms with determined signs, used in power::expand()
 	};
 };
 
@@ -177,7 +216,7 @@ public:
 class info_flags {
 public:
 	enum {
-		// answered by class numeric
+		// answered by class numeric, add, mul, function and symbols/constants in particular domains
 		numeric,
 		real,
 		rational,
@@ -219,14 +258,19 @@ public:
 		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
+		idx,
+
+		// answered by classes numeric, symbol, add, mul, power
+		expanded,
+
+		// is meaningful for mul only
+		indefinite
 	};
 };
 
@@ -251,6 +295,15 @@ public:
 	};
 };
 
+/** Flags to control the polynomial factorization. */
+class factor_options {
+public:
+	enum {
+		polynomial = 0x0000, ///< factor only expressions that are polynomials
+		all        = 0x0001  ///< factor all polynomial subexpressions
+	};
+};
+
 } // namespace GiNaC
 
-#endif // ndef __GINAC_FLAGS_H__
+#endif // ndef GINAC_FLAGS_H