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Overview
Comment: | Faster implementation of hexToInt that uses not branches. Ticket #3047. (CVS 4992) |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
a70e9587569c99dd05e79c6745ff930a |
User & Date: | drh 2008-04-11 19:37:56.000 |
Context
2008-04-11
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21:20 | Add the speedtest8inst1.c program for running speed tests with an instrumented VFS. (CVS 4993) (check-in: baa8056c67 user: drh tags: trunk) | |
19:37 | Faster implementation of hexToInt that uses not branches. Ticket #3047. (CVS 4992) (check-in: a70e958756 user: drh tags: trunk) | |
19:18 | Avoid the use of uninitialized variables in sqlite3GenerateRowIndexDelete. Ticket #3048. (CVS 4991) (check-in: a93b7a344a user: drh tags: trunk) | |
Changes
Changes to src/util.c.
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10 11 12 13 14 15 16 | ** ************************************************************************* ** Utility functions used throughout sqlite. ** ** This file contains functions for allocating memory, comparing ** strings, and stuff like that. ** | | | 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | ** ************************************************************************* ** Utility functions used throughout sqlite. ** ** This file contains functions for allocating memory, comparing ** strings, and stuff like that. ** ** $Id: util.c,v 1.220 2008/04/11 19:37:56 drh Exp $ */ #include "sqliteInt.h" #include <stdarg.h> #include <ctype.h> /* |
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615 616 617 618 619 620 621 622 | #if !defined(SQLITE_OMIT_BLOB_LITERAL) || defined(SQLITE_HAS_CODEC) /* ** Translate a single byte of Hex into an integer. ** This routinen only works if h really is a valid hexadecimal ** character: 0..9a..fA..F */ static int hexToInt(int h){ #if !defined(SQLITE_EBCDIC) | > | < < < < < < | < < < < < < > | 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 | #if !defined(SQLITE_OMIT_BLOB_LITERAL) || defined(SQLITE_HAS_CODEC) /* ** Translate a single byte of Hex into an integer. ** This routinen only works if h really is a valid hexadecimal ** character: 0..9a..fA..F */ static int hexToInt(int h){ assert( (h>='0' && h<='9') || (h>='a' && h<='f') || (h>='A' && h<='F') ); #if !defined(SQLITE_EBCDIC) h += 9*(1&(h>>6)); #else h += 9*(1&~(h>>4)); #endif return h & 0xf; } #endif /* !SQLITE_OMIT_BLOB_LITERAL || SQLITE_HAS_CODEC */ #if !defined(SQLITE_OMIT_BLOB_LITERAL) || defined(SQLITE_HAS_CODEC) /* ** Convert a BLOB literal of the form "x'hhhhhh'" into its binary ** value. Return a pointer to its binary value. Space to hold the |
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