Fixed several test failures in the funcs_1 suite introduced by the patch for bug #21205.

mysql-test/suite/funcs_1/r/memory_func_view.result:
  Take additional precision into account.
mysql-test/suite/funcs_1/r/memory_views.result:
  Take additional precision into account.
mysql-test/suite/funcs_1/r/myisam_func_view.result:
  Take additional precision into account.
mysql-test/suite/funcs_1/r/myisam_views.result:
  Take additional precision into account.

mysql-test/suite/funcs_1/r/memory_views.result

@@ -22825,7 +22825,7 @@ f1	f2
 ABC	3
 SELECT * FROM v1 order by 2;
 f1	my_sqrt
-ABC	1.7320508075689
+ABC	1.73205080756888
 ALTER TABLE t1 CHANGE COLUMN f2 f2 VARCHAR(30);
 INSERT INTO t1   SET f1 = 'ABC', f2 = 'DEF';
 DESCRIBE t1;
@@ -22843,7 +22843,7 @@ ABC	DEF
 SELECT * FROM v1 order by 2;
 f1	my_sqrt
 ABC	0
-ABC	1.7320508075689
+ABC	1.73205080756888
 SELECT SQRT('DEF');
 SQRT('DEF')
 0
@@ -22863,7 +22863,7 @@ my_sqrt	double	YES		NULL
 SELECT * FROM v2 order by 2;
 f1	my_sqrt
 ABC	0
-ABC	1.7320508075689
+ABC	1.73205080756888
 CREATE TABLE t2 AS SELECT f1, SQRT(f2) my_sqrt FROM t1;
 SELECT * FROM t2 order by 2;
 f1	ABC