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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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8
mysql-test/r/archive_gis.result
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@ -266,7 +266,7 @@ fid AsText(EndPoint(g))
107 POINT(40 10)
SELECT fid, GLength(g) FROM gis_line ORDER by fid;
fid GLength(g)
105 24.142135623731
105 24.14213562373095
106 40
107 30
SELECT fid, NumPoints(g) FROM gis_line ORDER by fid;
@ -292,7 +292,7 @@ Note 1003 select astext(startpoint(`test`.`gis_line`.`g`)) AS `AsText(StartPoint
SELECT fid, AsText(Centroid(g)) FROM gis_polygon ORDER by fid;
fid AsText(Centroid(g))
108 POINT(15 15)
109 POINT(25.4166666666667 25.4166666666667)
109 POINT(25.416666666666668 25.416666666666668)
110 POINT(20 10)
SELECT fid, Area(g) FROM gis_polygon ORDER by fid;
fid Area(g)
@ -326,8 +326,8 @@ fid IsClosed(g)
116 0
SELECT fid, AsText(Centroid(g)) FROM gis_multi_polygon ORDER by fid;
fid AsText(Centroid(g))
117 POINT(55.5885277530424 17.426536064114)
118 POINT(55.5885277530424 17.426536064114)
117 POINT(55.58852775304245 17.426536064113982)
118 POINT(55.58852775304245 17.426536064113982)
119 POINT(2 2)
SELECT fid, Area(g) FROM gis_multi_polygon ORDER by fid;
fid Area(g)