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Backport of WL #2934: Make/find library for doing float/double

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to string conversions and vice versa" 
Initial import of the dtoa.c code and custom wrappers around it 
to allow its usage from the server code. 
 
Conversion of FLOAT/DOUBLE values to DECIMAL ones or strings 
and vice versa has been significantly reworked. As the new 
algoritms are more precise than the older ones, results of such 
conversions may not always match those obtained from older 
server versions. This in turn may break compatibility for some 
applications. 
 
This patch also fixes the following bugs: 
- bug #12860 "Difference in zero padding of exponent between 
Unix and Windows" 
- bug #21497 "DOUBLE truncated to unusable value" 
- bug #26788 "mysqld (debug) aborts when inserting specific 
numbers into char fields" 
- bug #24541 "Data truncated..." on decimal type columns 
without any good reason"
This commit is contained in:
Alexey Kopytov
2009-12-22 19:23:13 +03:00
parent 5bce1e0642
commit f02525be83
58 changed files with 3526 additions and 1159 deletions
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70
mysql-test/r/insert.result
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@ -175,12 +175,12 @@ Warning 1264 Out of range value for column 'f_float_3_1_u' at row 1
select * from t1 where number =last_insert_id();
number 4
original_value 1e+1111111111a
f_double 1.79769313486232e+308
f_float 3.40282e+38
f_double 1.7976931348623157e308
f_float 3.40282e38
f_double_7_2 99999.99
f_float_4_3 9.999
f_double_u 1.79769313486232e+308
f_float_u 3.40282e+38
f_double_u 1.7976931348623157e308
f_float_u 3.40282e38
f_double_15_1_u 99999999999999.9
f_float_3_1_u 99.9
set @value= "-1e+1111111111a";
@ -204,8 +204,8 @@ Warning 1264 Out of range value for column 'f_float_3_1_u' at row 1
select * from t1 where number =last_insert_id();
number 5
original_value -1e+1111111111a
f_double -1.79769313486232e+308
f_float -3.40282e+38
f_double -1.7976931348623157e308
f_float -3.40282e38
f_double_7_2 -99999.99
f_float_4_3 -9.999
f_double_u 0
@ -227,13 +227,13 @@ Warning 1264 Out of range value for column 'f_double_15_1_u' at row 1
Warning 1264 Out of range value for column 'f_float_3_1_u' at row 1
select * from t1 where number =last_insert_id();
number 6
original_value 1e+111
f_double 1e+111
f_float 3.40282e+38
original_value 1e111
f_double 1e111
f_float 3.40282e38
f_double_7_2 99999.99
f_float_4_3 9.999
f_double_u 1e+111
f_float_u 3.40282e+38
f_double_u 1e111
f_float_u 3.40282e38
f_double_15_1_u 99999999999999.9
f_float_3_1_u 99.9
set @value= -1e+111;
@ -248,9 +248,9 @@ Warning 1264 Out of range value for column 'f_double_15_1_u' at row 1
Warning 1264 Out of range value for column 'f_float_3_1_u' at row 1
select * from t1 where number =last_insert_id();
number 7
original_value -1e+111
f_double -1e+111
f_float -3.40282e+38
original_value -1e111
f_double -1e111
f_float -3.40282e38
f_double_7_2 -99999.99
f_float_4_3 -9.999
f_double_u 0
@ -524,42 +524,36 @@ INSERT INTO t1(a,b) VALUES (1.25e-175, 1.25e-175);
INSERT INTO t1(a,c) VALUES (1.225e+0, 1.225e+0);
INSERT INTO t1(a,c) VALUES (1.37e+0, 1.37e+0);
INSERT INTO t1(a,c) VALUES (-1.37e+0, -1.37e+0);
Warnings:
Warning 1265 Data truncated for column 'c' at row 1
INSERT INTO t1(a,c) VALUES (1.87e-3, 1.87e-3);
Warnings:
Warning 1265 Data truncated for column 'c' at row 1
INSERT INTO t1(a,c) VALUES (-1.87e-2, -1.87e-2);
Warnings:
Warning 1265 Data truncated for column 'c' at row 1
INSERT INTO t1(a,c) VALUES (5000e+0, 5000e+0);
INSERT INTO t1(a,c) VALUES (-5000e+0, -5000e+0);
Warnings:
Warning 1265 Data truncated for column 'c' at row 1
SELECT * FROM t1;
a b c
9.999999 10 10
1.225e-05 1.2e-05 1e-0
0.0001225 0.00012 NULL
0.00001225 1.22e-5 1e-5
0.0001225 1.22e-4 NULL
0.1225 0.1225 NULL
0.1225877 0.12259 NULL
12.25 12.25 NULL
12.25 12.25 12.2
122500 122500 NULL
12250000000 1.2e+10 NULL
1.225e+15 1.2e+15 NULL
12250000000 1.22e10 NULL
1.225e15 1.22e15 NULL
5000000 5000000 NULL
1.25e+78 1.2e+78 NULL
1.25e78 1.25e78 NULL
1.25e-94 1.2e-94 NULL
1.25e+203 1e+203 NULL
1.25e203 1.2e203 NULL
1.25e-175 1e-175 NULL
1.225 NULL 1.23
1.37 NULL 1.37
-1.37 NULL -1.3
0.00187 NULL 0.00
-0.0187 NULL -0.0
-1.37 NULL -1.4
0.00187 NULL 2e-3
-0.0187 NULL 0
5000 NULL 5000
-5000 NULL -500
-5000 NULL -5e3
DROP TABLE t1;
CREATE TABLE t1 (
a char(20) NOT NULL,
@ -586,32 +580,30 @@ INSERT INTO t1(a,c) VALUES (1.37e+0, 1.37e+0);
INSERT INTO t1(a,c) VALUES (-1.37e+0, -1.37e+0);
INSERT INTO t1(a,c) VALUES (1.87e-3, 1.87e-3);
INSERT INTO t1(a,c) VALUES (-1.87e-2, -1.87e-2);
Warnings:
Warning 1265 Data truncated for column 'c' at row 1
INSERT INTO t1(a,c) VALUES (5000e+0, 5000e+0);
INSERT INTO t1(a,c) VALUES (-5000e+0, -5000e+0);
SELECT * FROM t1;
a b c
9.999999 10 9.999
1.225e-05 1.2e-05 1e-05
0.0001225 0.00012 NULL
0.00001225 1.22e-5 1e-5
0.0001225 1.22e-4 NULL
0.1225 0.1225 NULL
0.1225877 0.12259 NULL
12.25 12.25 NULL
12.25 12.25 12.25
122500 122500 NULL
12250000000 1.2e+10 NULL
1.225e+15 1.2e+15 NULL
12250000000 1.22e10 NULL
1.225e15 1.22e15 NULL
5000000 5000000 NULL
1.25e+78 1.2e+78 NULL
1.25e78 1.25e78 NULL
1.25e-94 1.2e-94 NULL
1.25e+203 1e+203 NULL
1.25e203 1.2e203 NULL
1.25e-175 1e-175 NULL
1.225 NULL 1.225
1.37 NULL 1.37
-1.37 NULL -1.37
0.00187 NULL 0.002
-0.0187 NULL -0.01
-0.0187 NULL -0.02
5000 NULL 5000
-5000 NULL -5000
DROP TABLE t1;