public static long castToLong(String s) {
if (s == null) return 0;
if (s.equals("INF") || s.equals("-INF") || s.equals("NaN"))
throw new ArithmeticException("'" + s + "' is too large for long.");
s = s.trim();
java.lang.StringBuffer buf = new java.lang.StringBuffer();
switch (prepareNumber(buf, s)) {
case 1:
return Long.parseLong(buf.toString());
case 2:
return new BigDecimal(buf.toString()).longValue();
case 3:
return (long) Double.parseDouble(buf.toString());
default:
throw new NumberFormatException("'" + s + "' cannot be converted to long.");
}
}
public long toLong() {
int dot = mantissa.indexOf('.');
if (dot >= 0) return Long.parseLong(sign + mantissa.substring(0, dot));
else return Long.parseLong(sign + mantissa);
}