mirror of https://github.com/sqlite/sqlite
Fix a round-off error when moving dates by negative modifier amounts.
Ticket #3618. Enhance the "NNN years" modifier to accept fractional years. (CVS 6220) FossilOrigin-Name: 86be908c5e77ba2b9ac98e394fa987b443d790f8
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drh
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C Made\scode\sto\sremove\sunused\sparameter\swarning\spart\sof\sthe\sconditional.\s\sTicket\s#3610.\s(CVS\s6219)
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D 2009-01-30T16:09:23
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C Fix\sa\sround-off\serror\swhen\smoving\sdates\sby\snegative\smodifier\samounts.\nTicket\s#3618.\s\sEnhance\sthe\s"NNN\syears"\smodifier\sto\saccept\sfractional\nyears.\s(CVS\s6220)
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D 2009-01-30T17:27:44
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F Makefile.arm-wince-mingw32ce-gcc fcd5e9cd67fe88836360bb4f9ef4cb7f8e2fb5a0
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F Makefile.in 3871d308188cefcb7c5ab20da4c7b6aad023bc52
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F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
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@ -109,7 +109,7 @@ F src/btreeInt.h 44bcbfe387ba99a3a9f2527bd12fa1bb8bc574b3
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F src/build.c c8bf5dcef4d5889bc57eecdb8b3dba178e5e06a8
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F src/callback.c bee8949d619b1b7b1e4dfac8a19c5116ae1dd12a
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F src/complete.c cb14e06dbe79dee031031f0d9e686ff306afe07c
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F src/date.c b4db68e6cd7f3c7b437c440fca5863692b8cd026
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F src/date.c 870770dde3fb56772ab247dfb6a6eda44d16cfbc
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F src/delete.c 6249005bdd8f85db6ec5f31ddb5c07de023693cc
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F src/expr.c 76dc3dc83b56ab8db50a772714fac49def8bbf12
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F src/fault.c dc88c821842157460750d2d61a8a8b4197d047ff
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@ -291,7 +291,7 @@ F test/crash8.test 5b32966fcb58fd616d24ce94303420351d076eb9
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F test/crashtest1.c 09c1c7d728ccf4feb9e481671e29dda5669bbcc2
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F test/createtab.test 199cf68f44e5d9e87a0b8afc7130fdeb4def3272
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F test/cse.test 277350a26264495e86b1785f34d2d0c8600e021c
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F test/date.test 4ea54e26feea7c24dfc7fad1b2b87da21ff12380
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F test/date.test bb2cc648333c04d09e8e23cfc0cddc398c334a92
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F test/default.test 252298e42a680146b1dd64f563b95bdf088d94fb
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F test/delete.test f171c1011395a8dd63169438fe1d8cc625eb7442
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F test/delete2.test 3a03f2cca1f9a67ec469915cb8babd6485db43fa
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@ -693,7 +693,7 @@ F tool/speedtest16.c c8a9c793df96db7e4933f0852abb7a03d48f2e81
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F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
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F tool/speedtest8.c 2902c46588c40b55661e471d7a86e4dd71a18224
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F tool/speedtest8inst1.c 293327bc76823f473684d589a8160bde1f52c14e
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P 0a2c7f740397c5c6373434c75d73c2714f14dd32
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R 649046167725b542f7b218aebaf5f5d8
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U shane
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Z 487e1bd5693e1aade7bfd1bf63c7b518
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P c5dca1146de72071ed2e5fdf6890f41682272587
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R 6a74041552de27456797035382a955bb
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U drh
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Z 4f589fc1347644d84b8da190a4ca5065
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@ -1 +1 @@
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c5dca1146de72071ed2e5fdf6890f41682272587
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86be908c5e77ba2b9ac98e394fa987b443d790f8
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20
src/date.c
20
src/date.c
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@ -16,7 +16,7 @@
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** sqlite3RegisterDateTimeFunctions() found at the bottom of the file.
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** All other code has file scope.
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**
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** $Id: date.c,v 1.101 2009/01/28 02:55:29 drh Exp $
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** $Id: date.c,v 1.102 2009/01/30 17:27:44 drh Exp $
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**
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** SQLite processes all times and dates as Julian Day numbers. The
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** dates and times are stored as the number of days since noon
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@ -629,6 +629,7 @@ static int parseModifier(const char *zMod, DateTime *p){
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case '7':
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case '8':
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case '9': {
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double rRounder;
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n = getValue(z, &r);
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assert( n>=1 );
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if( z[n]==':' ){
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@ -661,14 +662,15 @@ static int parseModifier(const char *zMod, DateTime *p){
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if( z[n-1]=='s' ){ z[n-1] = 0; n--; }
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computeJD(p);
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rc = 0;
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rRounder = r<0 ? -0.5 : +0.5;
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if( n==3 && strcmp(z,"day")==0 ){
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p->iJD += (sqlite3_int64)(r*86400000.0 + 0.5);
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p->iJD += (sqlite3_int64)(r*86400000.0 + rRounder);
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}else if( n==4 && strcmp(z,"hour")==0 ){
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p->iJD += (sqlite3_int64)(r*(86400000.0/24.0) + 0.5);
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p->iJD += (sqlite3_int64)(r*(86400000.0/24.0) + rRounder);
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}else if( n==6 && strcmp(z,"minute")==0 ){
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p->iJD += (sqlite3_int64)(r*(86400000.0/(24.0*60.0)) + 0.5);
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p->iJD += (sqlite3_int64)(r*(86400000.0/(24.0*60.0)) + rRounder);
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}else if( n==6 && strcmp(z,"second")==0 ){
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p->iJD += (sqlite3_int64)(r*(86400000.0/(24.0*60.0*60.0)) + 0.5);
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p->iJD += (sqlite3_int64)(r*(86400000.0/(24.0*60.0*60.0)) + rRounder);
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}else if( n==5 && strcmp(z,"month")==0 ){
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int x, y;
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computeYMD_HMS(p);
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@ -680,13 +682,17 @@ static int parseModifier(const char *zMod, DateTime *p){
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computeJD(p);
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y = (int)r;
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if( y!=r ){
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p->iJD += (sqlite3_int64)((r - y)*30.0*86400000.0 + 0.5);
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p->iJD += (sqlite3_int64)((r - y)*30.0*86400000.0 + rRounder);
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}
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}else if( n==4 && strcmp(z,"year")==0 ){
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int y = (int)r;
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computeYMD_HMS(p);
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p->Y += (int)r;
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p->Y += y;
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p->validJD = 0;
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computeJD(p);
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if( y!=r ){
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p->iJD += (sqlite3_int64)((r - y)*365.0*86400000.0 + rRounder);
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}
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}else{
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rc = 1;
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}
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@ -11,7 +11,7 @@
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# This file implements regression tests for SQLite library. The
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# focus of this file is testing date and time functions.
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#
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# $Id: date.test,v 1.31 2008/07/08 02:12:37 drh Exp $
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# $Id: date.test,v 1.32 2009/01/30 17:27:44 drh Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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@ -454,6 +454,28 @@ datetest 13.6 {strftime('%Y-%m-%d %H:%M:%S', '2007-01-01 23:59:59.6')} \
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datetest 13.7 {strftime('%Y-%m-%d %H:%M:%f', '2007-01-01 23:59:59.6')} \
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{2007-01-01 23:59:59.600}
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# Ticket #3618
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datetest 13.11 {julianday(2454832.5,'-1 day')} {2454831.5}
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datetest 13.12 {julianday(2454832.5,'+1 day')} {2454833.5}
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datetest 13.13 {julianday(2454832.5,'-1.5 day')} {2454831.0}
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datetest 13.14 {julianday(2454832.5,'+1.5 day')} {2454834.0}
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datetest 13.15 {julianday(2454832.5,'-3 hours')} {2454832.375}
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datetest 13.16 {julianday(2454832.5,'+3 hours')} {2454832.625}
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datetest 13.17 {julianday(2454832.5,'-45 minutes')} {2454832.46875}
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datetest 13.18 {julianday(2454832.5,'+45 minutes')} {2454832.53125}
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datetest 13.19 {julianday(2454832.5,'-675 seconds')} {2454832.4921875}
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datetest 13.20 {julianday(2454832.5,'+675 seconds')} {2454832.5078125}
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datetest 13.21 {julianday(2454832.5,'-1.5 months')} {2454786.5}
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datetest 13.22 {julianday(2454832.5,'+1.5 months')} {2454878.5}
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datetest 13.23 {julianday(2454832.5,'-1.5 years')} {2454284.0}
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datetest 13.24 {julianday(2454832.5,'+1.5 years')} {2455380.0}
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datetest 13.30 {date('2000-01-01','+1.5 years')} {2001-07-02}
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datetest 13.31 {date('2001-01-01','+1.5 years')} {2002-07-02}
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datetest 13.32 {date('2002-01-01','+1.5 years')} {2003-07-02}
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datetest 13.33 {date('2002-01-01','-1.5 years')} {2000-07-02}
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datetest 13.34 {date('2001-01-01','-1.5 years')} {1999-07-02}
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# Test for issues reported by BareFeet (list.sql at tandb.com.au)
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# on mailing list on 2008-06-12.
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#
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