merging

include/config-win.h

@@ -250,6 +250,15 @@ inline double ulonglong2double(ulonglong value)
 #define my_off_t2double(A) ulonglong2double(A)
 #endif /* _WIN64 */
 
+inline ulonglong double2ulonglong(double d)
+{
+  double t= d - (double) 0x8000000000000000ULL;
+
+  if (t >= 0)
+    return  ((ulonglong) t) + 0x8000000000000000ULL;
+  return (ulonglong) d;
+}
+
 #if SIZEOF_OFF_T > 4
 #define lseek(A,B,C) _lseeki64((A),(longlong) (B),(C))
 #define tell(A) _telli64(A)

include/my_global.h

@@ -789,6 +789,9 @@ typedef SOCKET_SIZE_TYPE size_socket;
 #define ulonglong2double(A) ((double) (ulonglong) (A))
 #define my_off_t2double(A)  ((double) (my_off_t) (A))
 #endif
+#ifndef double2ulonglong
+#define double2ulonglong(A) ((ulonglong) (double) (A))
+#endif
 #endif
 
 #ifndef offsetof

mysql-test/r/type_float.result

@@ -392,4 +392,17 @@ f1 + 0e0
 1.0000000150475e+30
 -1.0000000150475e+30
 drop table t1;
+create table t1(d double, u bigint unsigned);
+insert into t1(d) values (9.2233720368547777e+18),
+(9.223372036854779e18),
+(9.22337203685479e18),
+(1.84e19);
+update t1 set u = d;
+select * from t1;
+d	u
+9.22337203685478e+18	9223372036854775808
+9.22337203685478e+18	9223372036854779904
+9.22337203685479e+18	9223372036854790144
+1.84e+19	18400000000000000000
+drop table t1;
 End of 5.0 tests

mysql-test/t/type_float.test

@@ -252,4 +252,21 @@ insert into t1 values (2e30), (-2e30);
 select f1 + 0e0 from t1;
 drop table t1;
 
+# 
+# Bug #27483: Casting 'scientific notation type' to 'unsigned bigint' fails on 
+#             windows.
+#
+
+create table t1(d double, u bigint unsigned);
+
+insert into t1(d) values (9.2233720368547777e+18),
+                         (9.223372036854779e18),
+                         (9.22337203685479e18),
+                         (1.84e19);
+
+update t1 set u = d;
+select * from t1;
+
+drop table t1;
+
 --echo End of 5.0 tests