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Faster and smaller implementation of sqlite3StrICmp().

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FossilOrigin-Name: 7ac500fb5abfe1ad60f2ffdcc8fbe5ccc1c641bbeed53f00940e9ff78788e53d
This commit is contained in:
drh 2019-04-17 11:34:44 +00:00
parent d331c7ab1f
commit 7e427337fe
3 changed files with 16 additions and 13 deletions
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15
manifest
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@ -1,5 +1,5 @@
C Version\s3.28.0
D 2019-04-16T19:49:53.412
C Faster\sand\ssmaller\simplementation\sof\ssqlite3StrICmp().
D 2019-04-17T11:34:44.568
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F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@ -588,7 +588,7 @@ F src/trigger.c bb034c08eca111e66a19cda045903a12547c1be2294b5570d794b869d9c44a73
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src/util.c
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@ -322,12 +322,18 @@ int sqlite3_stricmp(const char *zLeft, const char *zRight){
}
int sqlite3StrICmp(const char *zLeft, const char *zRight){
unsigned char *a, *b;
int c;
int c, x;
a = (unsigned char *)zLeft;
b = (unsigned char *)zRight;
for(;;){
c = (int)UpperToLower[*a] - (int)UpperToLower[*b];
if( c || *a==0 ) break;
c = *a;
x = *b;
if( c==x ){
if( c==0 ) break;
}else{
c = (int)UpperToLower[c] - (int)UpperToLower[x];
if( c ) break;
}
a++;
b++;
}