Arjens LOG functions changes with small changes and tests added to mysql-test

Docs/manual.texi:
  Manual changes to doccument new functions and function changes
mysql-test/r/func_math.result:
  Extend tests for LOG family functions
mysql-test/t/func_math.test:
  Extend tests for LOG family functions
sql/gen_lex_hash.cc:
  Lex hash changes
sql/item_create.cc:
  Rename old log function to ln
sql/item_create.h:
  More log functions
sql/item_func.cc:
  Implementation of new log function behavior
sql/item_func.h:
  Class definition for new functions
sql/lex.h:
  Function names
sql/sql_yacc.yy:
  Symbols for new LOG function
tests/function.res:
  One more test result change
tests/function.tst:
  One more test change
BitKeeper/etc/logging_ok:
  Logging to logging@openlogging.org accepted

1 files changed, 20 insertions, 0 deletions

diff --git a/sql/item_func.h b/sql/item_func.h
index 5560d3cdb0d..0860e15d2e4 100644
--- a/sql/item_func.h
+++ b/sql/item_func.h
@@ -338,15 +338,35 @@ public:
   const char *func_name() const { return "exp"; }
 };
 
+
+class Item_func_ln :public Item_dec_func
+{
+public:
+  Item_func_ln(Item *a) :Item_dec_func(a) {}
+  double val();
+  const char *func_name() const { return "ln"; }
+};
+
+
 class Item_func_log :public Item_dec_func
 {
 public:
   Item_func_log(Item *a) :Item_dec_func(a) {}
+  Item_func_log(Item *a,Item *b) :Item_dec_func(a,b) {}
   double val();
   const char *func_name() const { return "log"; }
 };
 
 
+class Item_func_log2 :public Item_dec_func
+{
+public:
+  Item_func_log2(Item *a) :Item_dec_func(a) {}
+  double val();
+  const char *func_name() const { return "log2"; }
+};
+
+
 class Item_func_log10 :public Item_dec_func
 {
 public: