public static long parseLong(String s, int radix)
{
if (s == null)
{
throw new NumberFormatException("null");
}
if (radix < Character.MIN_RADIX)
{
throw new NumberFormatException("radix " + radix +
" less than Character.MIN_RADIX");
}
if (radix > Character.MAX_RADIX)
{
throw new NumberFormatException("radix " + radix +
" greater than Character.MAX_RADIX");
}
long result = 0;
boolean negative = false;
int i = 0, len = s.length();
long limit = -Long.MAX_VALUE;
long multmin;
int digit;
if (len > 0)
{
char firstChar = s.charAt(0);
if (firstChar < '0') // Possible leading "+" or "-"
{
if (firstChar == '-')
{
negative = true;
limit = Long.MIN_VALUE;
}
else if (firstChar != '+')
{
throw NumberFormatException.forInputString(s);
}
if (len == 1) // Cannot have lone "+" or "-"
{
throw NumberFormatException.forInputString(s);
}
i++;
}
multmin = limit / radix;
while (i < len)
{
// Accumulating negatively avoids surprises near MAX_VALUE
digit = Character.digit(s.charAt(i++), radix);
if (digit < 0)
{
throw NumberFormatException.forInputString(s);
}
if (result < multmin)
{
throw NumberFormatException.forInputString(s);
}
result *= radix;
if (result < limit + digit)
{
throw NumberFormatException.forInputString(s);
}
result -= digit;
}
}
else
{
throw NumberFormatException.forInputString(s);
}
return(negative ? result : -result);
}
public static int parseInt(String s, int radix)
{
/*
* WARNING: This method may be invoked early during VM initialization
* before IntegerCache is initialized. Care must be taken to not use
* the valueOf method.
*/
if (s == null)
{
throw new NumberFormatException("null");
}
if (radix < Character.MIN_RADIX)
{
throw new NumberFormatException("radix " + radix +
" less than Character.MIN_RADIX");
}
if (radix > Character.MAX_RADIX)
{
throw new NumberFormatException("radix " + radix +
" greater than Character.MAX_RADIX");
}
int result = 0;
boolean negative = false;
int i = 0, len = s.length();
int limit = -Integer.MAX_VALUE;
int multmin;
int digit;
if (len > 0)
{
char firstChar = s.charAt(0);
if (firstChar < '0') // Possible leading "+" or "-"
{
if (firstChar == '-')
{
negative = true;
limit = Integer.MIN_VALUE;
}
else if (firstChar != '+')
{
throw NumberFormatException.forInputString(s);
}
if (len == 1) // Cannot have lone "+" or "-"
{
throw NumberFormatException.forInputString(s);
}
i++;
}
multmin = limit / radix;
while (i < len)
{
// Accumulating negatively avoids surprises near MAX_VALUE
digit = Character.digit(s.charAt(i++), radix);
if (digit < 0)
{
throw NumberFormatException.forInputString(s);
}
if (result < multmin)
{
throw NumberFormatException.forInputString(s);
}
result *= radix;
if (result < limit + digit)
{
throw NumberFormatException.forInputString(s);
}
result -= digit;
}
}
else
{
throw NumberFormatException.forInputString(s);
}
return(negative ? result : -result);
}
