[phobos] [D-Programming-Language/phobos] 23b17c: fix unittest

[GitHub via phobos]

  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/phobos
  Commit: 23b17ca0829a86d6a116dd85dfae9bf76858daec
      https://github.com/D-Programming-Language/phobos/commit/23b17ca0829a86d6a116dd85dfae9bf76858daec
  Author: Ilya Yaroshenko <ilyayaroshenko at gmail.com>
  Date:   2015-02-05 (Thu, 05 Feb 2015)

  Changed paths:
    M std/math.d

  Log Message:
  -----------
  fix unittest

For future `double` and `float` versions of `log2`.


  Commit: 1d4a3415172ccf42e0d41bd596b81eb33a0815f8
      https://github.com/D-Programming-Language/phobos/commit/1d4a3415172ccf42e0d41bd596b81eb33a0815f8
  Author: Andrei Alexandrescu <andrei at erdani.com>
  Date:   2015-02-05 (Thu, 05 Feb 2015)

  Changed paths:
    M std/math.d

  Log Message:
  -----------
  Merge pull request #2961 from 9il/log2

fix unittest


Compare: https://github.com/D-Programming-Language/phobos/compare/b94d7de35cc3...1d4a3415172c