src/share/classes/java/util/Formatter.java

*** 3421,3442 ****
                  // remove "0x"
                  return Double.toHexString(d).substring(2);
              else {
                  assert(prec >= 1 && prec <= 12);
  
!                 int exponent  = FpUtils.getExponent(d);
                  boolean subnormal
                      = (exponent == DoubleConsts.MIN_EXPONENT - 1);
  
                  // If this is subnormal input so normalize (could be faster to
                  // do as integer operation).
                  if (subnormal) {
!                     scaleUp = FpUtils.scalb(1.0, 54);
                      d *= scaleUp;
                      // Calculate the exponent.  This is not just exponent + 54
                      // since the former is not the normalized exponent.
!                     exponent = FpUtils.getExponent(d);
                      assert exponent >= DoubleConsts.MIN_EXPONENT &&
                          exponent <= DoubleConsts.MAX_EXPONENT: exponent;
                  }
  
                  int precision = 1 + prec*4;
--- 3421,3442 ----
                  // remove "0x"
                  return Double.toHexString(d).substring(2);
              else {
                  assert(prec >= 1 && prec <= 12);
  
!                 int exponent  = Math.getExponent(d);
                  boolean subnormal
                      = (exponent == DoubleConsts.MIN_EXPONENT - 1);
  
                  // If this is subnormal input so normalize (could be faster to
                  // do as integer operation).
                  if (subnormal) {
!                     scaleUp = Math.scalb(1.0, 54);
                      d *= scaleUp;
                      // Calculate the exponent.  This is not just exponent + 54
                      // since the former is not the normalized exponent.
!                     exponent = Math.getExponent(d);
                      assert exponent >= DoubleConsts.MIN_EXPONENT &&
                          exponent <= DoubleConsts.MAX_EXPONENT: exponent;
                  }
  
                  int precision = 1 + prec*4;