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Extend strtoul() to cope with hex as well as decimal. Doesn't cope

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with octal yet, but we can probably live without that.
This commit is contained in:
Michael Brown 2006-11-15 02:52:06 +00:00
parent fedc186fd7
commit 65ff5357f1
1 changed files with 25 additions and 9 deletions
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34
src/core/misc.c
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@ -150,18 +150,34 @@ int inet_aton ( const char *cp, struct in_addr *inp ) {
return 0;
}
unsigned long strtoul(const char *p, char **endp, int base)
{
unsigned long strtoul ( const char *p, char **endp, int base ) {
unsigned long ret = 0;
if (base != 10) return 0;
while((*p >= '0') && (*p <= '9')) {
ret = ret*10 + (*p - '0');
p++;
unsigned int charval;
if ( base == 0 ) {
if ( ( p[0] == '0' ) && ( ( p[1] | 0x20 ) == 'x' ) ) {
base = 16;
p += 2;
} else {
base = 10;
}
}
if (endp)
while ( 1 ) {
charval = *(p++) - '0';
if ( charval > ( 'A' - '0' - 10 ) )
charval -= ( 'A' - '0' - 10 );
if ( charval > ( 'a' - 'A' ) )
charval -= ( 'a' - 'A' );
if ( charval >= ( unsigned int ) base )
break;
ret = ( ( ret * base ) + charval );
}
if ( endp )
*endp = ( char * ) p;
return(ret);
return ( ret );
}
/*