Enhance the SUM() aggregate (and related AVG() and TOTAL()) so that the running

sum is accurate to about 100 bits.

FossilOrigin-Name: a915f15a916af698e0cef46c8b3e7ed11bda19349179d2d414073cd39c4cce24

1 files changed, 10 insertions, 0 deletions

diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index 91b78710c..332048f43 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -1234,6 +1234,7 @@ typedef struct Cte Cte;
 typedef struct CteUse CteUse;
 typedef struct Db Db;
 typedef struct DbFixer DbFixer;
+typedef struct DblDbl DblDbl;
 typedef struct Schema Schema;
 typedef struct Expr Expr;
 typedef struct ExprList ExprList;
@@ -5035,6 +5036,15 @@ int sqlite3FixSrcList(DbFixer*, SrcList*);
 int sqlite3FixSelect(DbFixer*, Select*);
 int sqlite3FixExpr(DbFixer*, Expr*);
 int sqlite3FixTriggerStep(DbFixer*, TriggerStep*);
+
+
+/* Representation of an extended precision floating point value.
+** The actual value is the sum r and rr.  See the dbldbl.c file.
+*/
+void sqlite3DDFromInt(i64,double*);
+void sqlite3DDAdd(double,double,double,double,double*);
+void sqlite3DDSub(double,double,double,double,double*);
+
 int sqlite3RealSameAsInt(double,sqlite3_int64);
 i64 sqlite3RealToI64(double);
 int sqlite3Int64ToText(i64,char*);