src/java.base/share/classes/java/util/stream/Collectors.java

*** 1,7 ****
  /*
!  * Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
--- 1,7 ----
  /*
!  * Copyright (c) 2012, 2016, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
*** 654,665 ****
           * the proper result if the stream contains infinite values of
           * the same sign.
           */
          return new CollectorImpl<>(
                  () -> new double[3],
!                 (a, t) -> { sumWithCompensation(a, mapper.applyAsDouble(t));
!                             a[2] += mapper.applyAsDouble(t);},
                  (a, b) -> { sumWithCompensation(a, b[0]);
                              a[2] += b[2];
                              return sumWithCompensation(a, b[1]); },
                  a -> computeFinalSum(a),
                  CH_NOID);
--- 654,666 ----
           * the proper result if the stream contains infinite values of
           * the same sign.
           */
          return new CollectorImpl<>(
                  () -> new double[3],
!                 (a, t) -> { double val = mapper.applyAsDouble(t);
!                             sumWithCompensation(a, val);
!                             a[2] += val;},
                  (a, b) -> { sumWithCompensation(a, b[0]);
                              a[2] += b[2];
                              return sumWithCompensation(a, b[1]); },
                  a -> computeFinalSum(a),
                  CH_NOID);
*** 766,776 ****
           * the low-order bits of the sum computed via compensated
           * summation, and index 2 holds the number of values seen.
           */
          return new CollectorImpl<>(
                  () -> new double[4],
!                 (a, t) -> { sumWithCompensation(a, mapper.applyAsDouble(t)); a[2]++; a[3]+= mapper.applyAsDouble(t);},
                  (a, b) -> { sumWithCompensation(a, b[0]); sumWithCompensation(a, b[1]); a[2] += b[2]; a[3] += b[3]; return a; },
                  a -> (a[2] == 0) ? 0.0d : (computeFinalSum(a) / a[2]),
                  CH_NOID);
      }
  
--- 767,777 ----
           * the low-order bits of the sum computed via compensated
           * summation, and index 2 holds the number of values seen.
           */
          return new CollectorImpl<>(
                  () -> new double[4],
!                 (a, t) -> { double val = mapper.applyAsDouble(t); sumWithCompensation(a, val); a[2]++; a[3]+= val;},
                  (a, b) -> { sumWithCompensation(a, b[0]); sumWithCompensation(a, b[1]); a[2] += b[2]; a[3] += b[3]; return a; },
                  a -> (a[2] == 0) ? 0.0d : (computeFinalSum(a) / a[2]),
                  CH_NOID);
      }