Added a document about the coding conventions used in GiNaC. Corrections,

[ginac.git] / ginac / flags.h

diff --git a/ginac/flags.h b/ginac/flags.h
index c14e58408aa64ba765de1b0d26be9d3d8cd8fd4d..ef921600aaa25483a58d54e846007b8c395a33e9 100644 (file)
--- a/ginac/flags.h
+++ b/ginac/flags.h
@@ -38,10 +38,10 @@ public:
 class subs_options {
 public:
        enum {
-               // this should be called "no_pattern"...
-               subs_no_pattern = 0x0001,        ///< disable pattern matching
-               // this should be called "algebraic"...
-               subs_algebraic = 0x0002,         ///< enable algebraic substitutions
+               no_pattern = 0x0001,             ///< disable pattern matching
+               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()
        };
@@ -169,7 +169,8 @@ 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())
        };
 };