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Overview
| Comment: | Use integer rather than floating point compuations in converting from julian day number to unix-time to avoid round-off errors on Borland compilers. Ticket #3769. (CVS 6445) |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
c26f97bd857f3ddb15e63216cdd4a00e |
| User & Date: | drh 2009-04-03 12:04:37 |
Context
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2009-04-03
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| 12:12 | Remove a blank line in sqlite.h.in that was preventing the SQLITE_LOCKED_SHAREDCACHE constant appears in the automatically-generated documentation. Ticket #3775. (CVS 6446) check-in: 65f9d3b9 user: drh tags: trunk | |
| 12:04 | Use integer rather than floating point compuations in converting from julian day number to unix-time to avoid round-off errors on Borland compilers. Ticket #3769. (CVS 6445) check-in: c26f97bd user: drh tags: trunk | |
| 01:43 | Fix the PRAGMA parser so that it can accept negative numbers in parentheses, like the syntax diagrams say it should be able to. (CVS 6444) check-in: 286e8317 user: drh tags: trunk | |
Changes
Changes to src/date.c.
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** This file contains the C functions that implement date and time ** functions for SQLite. ** ** There is only one exported symbol in this file - the function ** sqlite3RegisterDateTimeFunctions() found at the bottom of the file. ** All other code has file scope. ** ** $Id: date.c,v 1.104 2009/04/01 20:44:14 drh Exp $ ** ** SQLite processes all times and dates as Julian Day numbers. The ** dates and times are stored as the number of days since noon ** in Greenwich on November 24, 4714 B.C. according to the Gregorian ** calendar system. ** ** 1970-01-01 00:00:00 is JD 2440587.5 ................................................................................ j+=sqlite3Strlen30(&z[j]); break; } case 'm': sqlite3_snprintf(3, &z[j],"%02d",x.M); j+=2; break; case 'M': sqlite3_snprintf(3, &z[j],"%02d",x.m); j+=2; break; case 's': { sqlite3_snprintf(30,&z[j],"%lld", (i64)(x.iJD/1000.0 - 210866760000.0)); j += sqlite3Strlen30(&z[j]); break; } case 'S': sqlite3_snprintf(3,&z[j],"%02d",(int)x.s); j+=2; break; case 'w': { z[j++] = (char)(((x.iJD+129600000)/86400000) % 7) + '0'; break; |
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** This file contains the C functions that implement date and time ** functions for SQLite. ** ** There is only one exported symbol in this file - the function ** sqlite3RegisterDateTimeFunctions() found at the bottom of the file. ** All other code has file scope. ** ** $Id: date.c,v 1.105 2009/04/03 12:04:37 drh Exp $ ** ** SQLite processes all times and dates as Julian Day numbers. The ** dates and times are stored as the number of days since noon ** in Greenwich on November 24, 4714 B.C. according to the Gregorian ** calendar system. ** ** 1970-01-01 00:00:00 is JD 2440587.5 ................................................................................ j+=sqlite3Strlen30(&z[j]); break; } case 'm': sqlite3_snprintf(3, &z[j],"%02d",x.M); j+=2; break; case 'M': sqlite3_snprintf(3, &z[j],"%02d",x.m); j+=2; break; case 's': { sqlite3_snprintf(30,&z[j],"%lld", (i64)(x.iJD/1000 - 21086676*(i64)10000)); j += sqlite3Strlen30(&z[j]); break; } case 'S': sqlite3_snprintf(3,&z[j],"%02d",(int)x.s); j+=2; break; case 'w': { z[j++] = (char)(((x.iJD+129600000)/86400000) % 7) + '0'; break; |