#7858: Fix definitions of abs/signum for Floats/Doubles -------------------------------------+------------------------------------- Reporter: lerkok | Owner: Type: bug | Status: patch Priority: normal | Milestone: Component: | Version: 7.6.3 libraries/base | Keywords: floating point Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: | Related Tickets: #9238 None/Unknown | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by rwbarton): * related: => #9238 Comment: Oh I know why. See #9238. `signum` looks something like {{{ \(D# x) -> case x of { __DEFAULT__ -> ... 0.0 -> x } }}} and at `-O1` and higher, `x` is inlined to `0` in the right-hand side of the second case alternative. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/7858#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler