paddr_t
strtopaddr(const char *nptr, char **endptr, int base) {
const char *p;
const char *startp;
int digit;
paddr_t value;
if(endptr != NULL) *endptr = (char *)nptr;
p = nptr;
if(base == 0) {
if(hexstr(p)) base = 16;
else if(*p == '0') base = 8;
else base = 10;
}
if(base == 16) {
if(hexstr(p)) p += 2; /* skip over '0x' */
}
startp = p;
value = 0;
for(;;) {
digit = radix_value(*p);
if(digit >= base) break;
value = value * base + digit;
++p;
}
if(p == startp) p = nptr;
if(endptr != NULL) *endptr = (char *)p;
return value;
}
static unsigned long int _stol( const CHAR_TYPE *nptr,CHAR_TYPE **endptr,int base,int who)
{
const CHAR_TYPE *p;
const CHAR_TYPE *startp;
int digit;
unsigned long int value;
unsigned long int prev_value;
CHAR_TYPE sign;
char overflow; /*overflow is used as a flag so it does not
*need to be of type CHAR_TYPE */
if( endptr != NULL ) *endptr = (CHAR_TYPE *)nptr;
p = nptr;
while( __F_NAME(isspace,iswspace)(*p) ) ++p;
sign = *p;
if( sign == '+' || sign == '-' ) ++p;
if( base == 0 ) {
if( hexstr(p) ) base = 16;
else if( *p == '0' ) base = 8;
else base = 10;
}
if( base < 2 || base > 36 ) {
__set_errno( EDOM );
return( 0 );
}
if( base == 16 ) {
if( hexstr(p) ) p += 2; /* skip over '0x' */
}
startp = p;
overflow = 0;
value = 0;
for(;;) {
digit = radix_value( *p );
if( digit >= base ) break;
if( value > nearly_overflowing[base-2] ) overflow = 1;
prev_value = value;
value = value * base + digit;
if( value < prev_value ) overflow = 1;
++p;
}
if( p == startp ) p = nptr;
if( endptr != NULL ) *endptr = (CHAR_TYPE *)p;
if( who == 1 ) {
if( value >= 0x80000000 ) {
if( value == 0x80000000 && sign == '-' ) {
; /* OK */
} else {
overflow = 1;
}
}
}
if( overflow ) {
__set_errno( ERANGE );
if( who == 0 ) return( ULONG_MAX );
if( sign == '-' ) return( LONG_MIN );
return( LONG_MAX );
}
if( sign == '-' ) value = - value;
return( value );
}
