src/share/classes/java/lang/Integer.java

rev 10110 : 8050114: Expose Integer/Long formatUnsigned methods internally
Reviewed-by: mduigou

*** 317,344 ****
          // Use special constructor which takes over "buf".
          return new String(buf, true);
      }
  
      /**
!      * Format a long (treated as unsigned) into a character buffer.
       * @param val the unsigned int to format
       * @param shift the log2 of the base to format in (4 for hex, 3 for octal, 1 for binary)
       * @param buf the character buffer to write to
       * @param offset the offset in the destination buffer to start at
       * @param len the number of characters to write
-      * @return the lowest character  location used
       */
!      static int formatUnsignedInt(int val, int shift, char[] buf, int offset, int len) {
!         int charPos = len;
          int radix = 1 << shift;
          int mask = radix - 1;
!         do {
!             buf[offset + --charPos] = Integer.digits[val & mask];
              val >>>= shift;
!         } while (val != 0 && charPos > 0);
! 
!         return charPos;
      }
  
      final static char [] DigitTens = {
          '0', '0', '0', '0', '0', '0', '0', '0', '0', '0',
          '1', '1', '1', '1', '1', '1', '1', '1', '1', '1',
--- 317,347 ----
          // Use special constructor which takes over "buf".
          return new String(buf, true);
      }
  
      /**
!      * Format an {@code int} (treated as unsigned) into a character buffer. If
!      * {@code len} exceeds the formatted ASCII representation of {@code val},
!      * {@code buf} will be padded with leading zeroes.
!      *
       * @param val the unsigned int to format
       * @param shift the log2 of the base to format in (4 for hex, 3 for octal, 1 for binary)
       * @param buf the character buffer to write to
       * @param offset the offset in the destination buffer to start at
       * @param len the number of characters to write
       */
!      static void formatUnsignedInt(int val, int shift, char[] buf, int offset, int len) {
!         // assert shift > 0 && shift <=5 : "Illegal shift value";
!         // assert offset >= 0 && offset < buf.length : "illegal offset";
!         // assert len > 0 && (offset + len) <= buf.length : "illegal length";
!         int charPos = offset + len;
          int radix = 1 << shift;
          int mask = radix - 1;
!         while (charPos > offset) {
!             buf[--charPos] = Integer.digits[val & mask];
              val >>>= shift;
!         }
      }
  
      final static char [] DigitTens = {
          '0', '0', '0', '0', '0', '0', '0', '0', '0', '0',
          '1', '1', '1', '1', '1', '1', '1', '1', '1', '1',