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[libc] Add strtoull()

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Don't implement strtoul() on top of strtoull() as strtoull() is much
bigger and only used on linux currently. Instead refactor most of the
logic out of strtoul() into static inlines and reuse that. Also put it
in a separate object so it won't get linked in.

Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Piotr Jaroszyński
2010-07-18 17:52:43 +02:00
committed by Michael Brown
parent b1fa4378d1
commit 1822b1deb9
3 changed files with 90 additions and 22 deletions
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24
src/core/misc.c
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@@ -37,30 +37,10 @@ unsigned long strtoul ( const char *p, char **endp, int base ) {
unsigned long ret = 0;
unsigned int charval;
while ( isspace ( *p ) )
p++;
if ( base == 0 ) {
base = 10;
if ( *p == '0' ) {
p++;
base = 8;
if ( ( *p | 0x20 ) == 'x' ) {
p++;
base = 16;
}
}
}
base = strtoul_base ( &p, base );
while ( 1 ) {
charval = *p;
if ( charval >= 'a' ) {
charval = ( charval - 'a' + 10 );
} else if ( charval >= 'A' ) {
charval = ( charval - 'A' + 10 );
} else if ( charval <= '9' ) {
charval = ( charval - '0' );
}
charval = strtoul_charval ( *p );
if ( charval >= ( unsigned int ) base )
break;
ret = ( ( ret * base ) + charval );