[phobos] [dlang/phobos] e99a7f: std.functional: add overflow checks

[GitHub via phobos]

  Branch: refs/heads/master
  Home:   https://github.com/dlang/phobos
  Commit: e99a7f61840fd99343c486314f181ed4dde1a00f
      https://github.com/dlang/phobos/commit/e99a7f61840fd99343c486314f181ed4dde1a00f
  Author: Walter Bright <walter at walterbright.com>
  Date:   2016-07-28 (Thu, 28 Jul 2016)

  Changed paths:
    M std/functional.d

  Log Message:
  -----------
  std.functional: add overflow checks


  Commit: ef828293f55a4ae272a41f93d047e90da8a2ee77
      https://github.com/dlang/phobos/commit/ef828293f55a4ae272a41f93d047e90da8a2ee77
  Author: Steven Schveighoffer <schveiguy at yahoo.com>
  Date:   2016-08-02 (Tue, 02 Aug 2016)

  Changed paths:
    M std/functional.d

  Log Message:
  -----------
  Merge pull request #4654 from WalterBright/functional-overflow

std.functional: add overflow checks


Compare: https://github.com/dlang/phobos/compare/6784f6323d99...ef828293f55a