diff --git a/.hlint.yaml b/.hlint.yaml
--- a/.hlint.yaml
+++ b/.hlint.yaml
@@ -1,3 +1,3 @@
-- arguments: [--cpp-define=HLINT, --cpp-ansi, --cpp-define=__USE_FFI__]
+- arguments: [--cpp-ansi]
 
 - ignore: {name: Use camelCase}
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
--- a/.travis.yml
+++ /dev/null
@@ -1,175 +0,0 @@
-# This Travis job script has been generated by a script via
-#
-#   haskell-ci '--output=.travis.yml' '--config=cabal.haskell-ci' 'cabal.project'
-#
-# For more information, see https://github.com/haskell-CI/haskell-ci
-#
-# version: 0.5.20180830
-#
-language: c
-dist: xenial
-git:
-  # whether to recursively clone submodules
-  submodules: false
-notifications:
-  irc:
-    channels:
-      - irc.freenode.org#haskell-lens
-    skip_join: true
-    template:
-      - "\"\\x0313log-domain\\x03/\\x0306%{branch}\\x03 \\x0314%{commit}\\x03 %{build_url} %{message}\""
-cache:
-  directories:
-    - $HOME/.cabal/packages
-    - $HOME/.cabal/store
-before_cache:
-  - rm -fv $CABALHOME/packages/hackage.haskell.org/build-reports.log
-  # remove files that are regenerated by 'cabal update'
-  - rm -fv $CABALHOME/packages/hackage.haskell.org/00-index.*
-  - rm -fv $CABALHOME/packages/hackage.haskell.org/*.json
-  - rm -fv $CABALHOME/packages/hackage.haskell.org/01-index.cache
-  - rm -fv $CABALHOME/packages/hackage.haskell.org/01-index.tar
-  - rm -fv $CABALHOME/packages/hackage.haskell.org/01-index.tar.idx
-  - rm -rfv $CABALHOME/packages/head.hackage
-matrix:
-  include:
-    - compiler: ghc-8.8.1
-      addons: {"apt":{"sources":["hvr-ghc"],"packages":["ghc-8.8.1","cabal-install-3.0"]}}
-    - compiler: ghc-8.6.5
-      addons: {"apt":{"sources":["hvr-ghc"],"packages":["ghc-8.6.5","cabal-install-3.0"]}}
-    - compiler: ghc-8.4.4
-      addons: {"apt":{"sources":["hvr-ghc"],"packages":["ghc-8.4.4","cabal-install-3.0"]}}
-    - compiler: ghc-8.2.2
-      addons: {"apt":{"sources":["hvr-ghc"],"packages":["ghc-8.2.2","cabal-install-3.0"]}}
-    - compiler: ghc-8.0.2
-      addons: {"apt":{"sources":["hvr-ghc"],"packages":["ghc-8.0.2","cabal-install-3.0"]}}
-    - compiler: ghc-7.10.3
-      addons: {"apt":{"sources":["hvr-ghc"],"packages":["ghc-7.10.3","cabal-install-3.0"]}}
-    - compiler: ghc-7.8.4
-      addons: {"apt":{"sources":["hvr-ghc"],"packages":["ghc-7.8.4","cabal-install-3.0"]}}
-    - compiler: ghc-7.6.3
-      addons: {"apt":{"sources":["hvr-ghc"],"packages":["ghc-7.6.3","cabal-install-3.0"]}}
-    - compiler: ghc-7.4.2
-      addons: {"apt":{"sources":["hvr-ghc"],"packages":["ghc-7.4.2","cabal-install-3.0"]}}
-    - compiler: ghc-head
-      addons: {"apt":{"sources":["hvr-ghc"],"packages":["ghc-head","cabal-install-head"]}}
-  allow_failures:
-    - compiler: ghc-head
-before_install:
-  - HC=$(echo "/opt/$CC/bin/ghc" | sed 's/-/\//')
-  - WITHCOMPILER="-w $HC"
-  - HADDOCK=$(echo "/opt/$CC/bin/haddock" | sed 's/-/\//')
-  - HCPKG="$HC-pkg"
-  - unset CC
-  - CABAL=/opt/ghc/bin/cabal
-  - CABALHOME=$HOME/.cabal
-  - export PATH="$CABALHOME/bin:$PATH"
-  - TOP=$(pwd)
-  - "HCNUMVER=$(${HC} --numeric-version|perl -ne '/^(\\d+)\\.(\\d+)\\.(\\d+)(\\.(\\d+))?$/; print(10000 * $1 + 100 * $2 + ($3 == 0 ? $5 != 1 : $3))')"
-  - echo $HCNUMVER
-  - CABAL="$CABAL -vnormal+nowrap+markoutput"
-  - set -o pipefail
-  - |
-    echo 'function blue(s) { printf "\033[0;34m" s "\033[0m " }'           >> .colorful.awk
-    echo 'BEGIN { state = "output"; }'                                     >> .colorful.awk
-    echo '/^-----BEGIN CABAL OUTPUT-----$/ { state = "cabal" }'            >> .colorful.awk
-    echo '/^-----END CABAL OUTPUT-----$/ { state = "output" }'             >> .colorful.awk
-    echo '!/^(-----BEGIN CABAL OUTPUT-----|-----END CABAL OUTPUT-----)/ {' >> .colorful.awk
-    echo '  if (state == "cabal") {'                                       >> .colorful.awk
-    echo '    print blue($0)'                                              >> .colorful.awk
-    echo '  } else {'                                                      >> .colorful.awk
-    echo '    print $0'                                                    >> .colorful.awk
-    echo '  }'                                                             >> .colorful.awk
-    echo '}'                                                               >> .colorful.awk
-  - cat .colorful.awk
-  - |
-    color_cabal_output () {
-      awk -f $TOP/.colorful.awk
-    }
-  - echo text | color_cabal_output
-install:
-  - ${CABAL} --version
-  - echo "$(${HC} --version) [$(${HC} --print-project-git-commit-id 2> /dev/null || echo '?')]"
-  - TEST=--enable-tests
-  - BENCH=--enable-benchmarks
-  - HEADHACKAGE=false
-  - if [ $HCNUMVER -gt 80801 ] ; then HEADHACKAGE=true ; fi
-  - rm -f $CABALHOME/config
-  - |
-    echo "verbose: normal +nowrap +markoutput"          >> $CABALHOME/config
-    echo "remote-build-reporting: anonymous"            >> $CABALHOME/config
-    echo "write-ghc-environment-files: always"          >> $CABALHOME/config
-    echo "remote-repo-cache: $CABALHOME/packages"       >> $CABALHOME/config
-    echo "logs-dir:          $CABALHOME/logs"           >> $CABALHOME/config
-    echo "world-file:        $CABALHOME/world"          >> $CABALHOME/config
-    echo "extra-prog-path:   $CABALHOME/bin"            >> $CABALHOME/config
-    echo "symlink-bindir:    $CABALHOME/bin"            >> $CABALHOME/config
-    echo "installdir:        $CABALHOME/bin"            >> $CABALHOME/config
-    echo "build-summary:     $CABALHOME/logs/build.log" >> $CABALHOME/config
-    echo "store-dir:         $CABALHOME/store"          >> $CABALHOME/config
-    echo "install-dirs user"                            >> $CABALHOME/config
-    echo "  prefix: $CABALHOME"                         >> $CABALHOME/config
-    echo "repository hackage.haskell.org"               >> $CABALHOME/config
-    echo "  url: http://hackage.haskell.org/"           >> $CABALHOME/config
-  - |
-    if $HEADHACKAGE; then
-    echo "allow-newer: $($HCPKG list --simple-output | sed -E 's/([a-zA-Z-]+)-[0-9.]+/*:\1/g')" >> $CABALHOME/config
-    echo "repository head.hackage.ghc.haskell.org"                                        >> $CABALHOME/config
-    echo "   url: https://ghc.gitlab.haskell.org/head.hackage/"                           >> $CABALHOME/config
-    echo "   secure: True"                                                                >> $CABALHOME/config
-    echo "   root-keys: 7541f32a4ccca4f97aea3b22f5e593ba2c0267546016b992dfadcd2fe944e55d" >> $CABALHOME/config
-    echo "              26021a13b401500c8eb2761ca95c61f2d625bfef951b939a8124ed12ecf07329" >> $CABALHOME/config
-    echo "              f76d08be13e9a61a377a85e2fb63f4c5435d40f8feb3e12eb05905edb8cdea89" >> $CABALHOME/config
-    echo "   key-threshold: 3"                                                            >> $CABALHOME/config
-    fi
-  - cat $CABALHOME/config
-  - rm -fv cabal.project cabal.project.local cabal.project.freeze
-  - travis_retry ${CABAL} v2-update -v
-  - if [ $HCNUMVER -ge 80800 ] && [ $HCNUMVER -lt 80802 ] ; then (cd /tmp && ${CABAL} v2-install $WITHCOMPILER -j2 hlint --constraint='hlint ==2.1.*' | color_cabal_output) ; fi
-  # Generate cabal.project
-  - rm -rf cabal.project cabal.project.local cabal.project.freeze
-  - touch cabal.project
-  - |
-    echo "packages: ." >> cabal.project
-  - |
-  - "for pkg in $($HCPKG list --simple-output); do echo $pkg | sed 's/-[^-]*$//' | (grep -vE -- '^(log-domain)$' || true) | sed 's/^/constraints: /' | sed 's/$/ installed/' >> cabal.project.local; done"
-  - cat cabal.project || true
-  - cat cabal.project.local || true
-  - if [ -f "./configure.ac" ]; then (cd "." && autoreconf -i); fi
-  - ${CABAL} v2-freeze $WITHCOMPILER ${TEST} ${BENCH} | color_cabal_output
-  - "cat cabal.project.freeze | sed -E 's/^(constraints: *| *)//' | sed 's/any.//'"
-  - rm  cabal.project.freeze
-  - ${CABAL} v2-build $WITHCOMPILER ${TEST} ${BENCH} --dep -j2 all | color_cabal_output
-script:
-  - DISTDIR=$(mktemp -d /tmp/dist-test.XXXX)
-  # Packaging...
-  - ${CABAL} v2-sdist all | color_cabal_output
-  # Unpacking...
-  - mv dist-newstyle/sdist/*.tar.gz ${DISTDIR}/
-  - cd ${DISTDIR} || false
-  - find . -maxdepth 1 -type f -name '*.tar.gz' -exec tar -xvf '{}' \;
-  - find . -maxdepth 1 -type f -name '*.tar.gz' -exec rm       '{}' \;
-  - PKGDIR_log_domain="$(find . -maxdepth 1 -type d -regex '.*/log-domain-[0-9.]*')"
-  # Generate cabal.project
-  - rm -rf cabal.project cabal.project.local cabal.project.freeze
-  - touch cabal.project
-  - |
-    echo "packages: ${PKGDIR_log_domain}" >> cabal.project
-  - |
-  - "for pkg in $($HCPKG list --simple-output); do echo $pkg | sed 's/-[^-]*$//' | (grep -vE -- '^(log-domain)$' || true) | sed 's/^/constraints: /' | sed 's/$/ installed/' >> cabal.project.local; done"
-  - cat cabal.project || true
-  - cat cabal.project.local || true
-  # Building with tests and benchmarks...
-  # build & run tests, build benchmarks
-  - ${CABAL} v2-build $WITHCOMPILER ${TEST} ${BENCH} all | color_cabal_output
-  # Testing...
-  - ${CABAL} v2-test $WITHCOMPILER ${TEST} ${BENCH} all | color_cabal_output
-  # HLint..
-  - if [ $HCNUMVER -ge 80800 ] && [ $HCNUMVER -lt 80802 ] ; then (cd ${PKGDIR_log_domain} && hlint src) ; fi
-  # cabal check...
-  - (cd ${PKGDIR_log_domain} && ${CABAL} -vnormal check)
-  # haddock...
-  - ${CABAL} v2-haddock $WITHCOMPILER --with-haddock $HADDOCK ${TEST} ${BENCH} all | color_cabal_output
-
-# REGENDATA ["--output=.travis.yml","--config=cabal.haskell-ci","cabal.project"]
-# EOF
diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
--- a/CHANGELOG.markdown
+++ b/CHANGELOG.markdown
@@ -1,3 +1,14 @@
+0.13.1 [2021.02.17]
+-------------------
+* The build-type has been changed from `Custom` to `Simple`.
+  To achieve this, the `doctests` test suite has been removed in favor of using
+  [`cabal-docspec`](https://github.com/phadej/cabal-extras/tree/master/cabal-docspec)
+  to run the doctests.
+
+0.13 [2019.11.21]
+-----------------
+* Replace dependency on `Precise` with standard functions available from `base` 4.9 onward.
+
 0.12 [2018.01.18]
 -----------------
 * Add `Semigroup` instance for `Log`.
diff --git a/README.markdown b/README.markdown
--- a/README.markdown
+++ b/README.markdown
@@ -1,7 +1,7 @@
 log-domain
 ==========
 
-[![Hackage](https://img.shields.io/hackage/v/log-domain.svg)](https://hackage.haskell.org/package/log-domain) [![Build Status](https://secure.travis-ci.org/ekmett/log-domain.png?branch=master)](http://travis-ci.org/ekmett/log-domain)
+[![Hackage](https://img.shields.io/hackage/v/log-domain.svg)](https://hackage.haskell.org/package/log-domain) [![Build Status](https://github.com/ekmett/log-domain/workflows/Haskell-CI/badge.svg)](https://github.com/ekmett/log-domain/actions?query=workflow%3AHaskell-CI)
 
 > What rolls down stairs alone or in pairs
 > Rolls over your neighbor's dog?
diff --git a/Setup.lhs b/Setup.lhs
--- a/Setup.lhs
+++ b/Setup.lhs
@@ -1,34 +1,7 @@
-\begin{code}
-{-# LANGUAGE CPP #-}
-{-# OPTIONS_GHC -Wall #-}
-module Main (main) where
-
-#ifndef MIN_VERSION_cabal_doctest
-#define MIN_VERSION_cabal_doctest(x,y,z) 0
-#endif
-
-#if MIN_VERSION_cabal_doctest(1,0,0)
-
-import Distribution.Extra.Doctest ( defaultMainWithDoctests )
-main :: IO ()
-main = defaultMainWithDoctests "doctests"
-
-#else
-
-#ifdef MIN_VERSION_Cabal
--- If the macro is defined, we have new cabal-install,
--- but for some reason we don't have cabal-doctest in package-db
---
--- Probably we are running cabal sdist, when otherwise using new-build
--- workflow
-import Warning ()
-#endif
-
-import Distribution.Simple
-
-main :: IO ()
-main = defaultMain
+#!/usr/bin/runhaskell
+> module Main (main) where
 
-#endif
+> import Distribution.Simple
 
-\end{code}
+> main :: IO ()
+> main = defaultMain
diff --git a/Warning.hs b/Warning.hs
deleted file mode 100644
--- a/Warning.hs
+++ /dev/null
@@ -1,5 +0,0 @@
-module Warning
-  {-# WARNING ["You are configuring this package without cabal-doctest installed.",
-               "The doctests test-suite will not work as a result.",
-               "To fix this, install cabal-doctest before configuring."] #-}
-  () where
diff --git a/log-domain.cabal b/log-domain.cabal
--- a/log-domain.cabal
+++ b/log-domain.cabal
@@ -1,8 +1,8 @@
 name:          log-domain
 category:      Numeric
-version:       0.13
+version:       0.13.1
 license:       BSD3
-cabal-version: >= 1.8
+cabal-version: >= 1.10
 license-file:  LICENSE
 author:        Edward A. Kmett
 maintainer:    Edward A. Kmett <ekmett@gmail.com>
@@ -10,54 +10,32 @@
 homepage:      http://github.com/ekmett/log-domain/
 bug-reports:   http://github.com/ekmett/log-domain/issues
 copyright:     Copyright (C) 2013-2015 Edward A. Kmett
-build-type:    Custom
-tested-with:   GHC == 7.4.2
-             , GHC == 7.6.3
-             , GHC == 7.8.4
-             , GHC == 7.10.3
-             , GHC == 8.0.2
+build-type:    Simple
+tested-with:   GHC == 8.0.2
              , GHC == 8.2.2
              , GHC == 8.4.4
              , GHC == 8.6.5
-             , GHC == 8.8.1
+             , GHC == 8.8.3
+             , GHC == 8.10.1
 synopsis:      Log-domain arithmetic
 description:   This package provides log-domain floats, doubles and complex numbers.
 
 extra-source-files:
-  .travis.yml
   .ghci
   .gitignore
   .hlint.yaml
   .vim.custom
-  travis/cabal-apt-install
-  travis/config
   AUTHORS.markdown
   README.markdown
   CHANGELOG.markdown
-  Warning.hs
 
 source-repository head
   type: git
   location: https://github.com/analytics/log-domain
 
-custom-setup
-  setup-depends:
-    base          >= 4.9 && < 5,
-    Cabal,
-    cabal-doctest >= 1 && < 1.1
-
--- You can disable the doctests test suite with -f-test-doctests
-flag test-doctests
-  default: True
-  manual: True
-
-flag ffi
-  default: True
-  manual: True
-
 library
   build-depends:
-    base                      >= 4.5      && < 5,
+    base                      >= 4.9      && < 5,
     binary                    >= 0.5      && < 0.9,
     bytes                     >= 0.7      && < 1,
     cereal                    >= 0.3.5    && < 0.6,
@@ -75,25 +53,6 @@
   if impl(ghc < 7.6)
     build-depends: ghc-prim
 
-  if flag(ffi) && !(os(windows) && !impl(ghc >= 8.0))
-    cpp-options: -D__USE_FFI__
-
   ghc-options: -Wall -fwarn-tabs -O2
   hs-source-dirs: src
-
-test-suite doctests
-  type:           exitcode-stdio-1.0
-  main-is:        doctests.hs
-  ghc-options:    -Wall -threaded
-  hs-source-dirs: tests
-
-  if !flag(test-doctests)
-    buildable: False
-  else
-    build-depends:
-      base,
-      doctest        >= 0.11.1 && < 0.17,
-      generic-deriving,
-      log-domain,
-      semigroups     >= 0.9,
-      simple-reflect >= 0.3.1
+  default-language: Haskell2010
diff --git a/src/Numeric/Log.hs b/src/Numeric/Log.hs
--- a/src/Numeric/Log.hs
+++ b/src/Numeric/Log.hs
@@ -1,9 +1,7 @@
 {-# LANGUAGE CPP #-}
-{-# LANGUAGE ForeignFunctionInterface #-}
 {-# LANGUAGE DeriveDataTypeable #-}
 {-# LANGUAGE DeriveGeneric #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
-{-# LANGUAGE PatternGuards #-}
 {-# LANGUAGE TypeFamilies #-}
 {-# LANGUAGE Trustworthy #-}
 --------------------------------------------------------------------
@@ -26,7 +24,6 @@
 #endif
 import Control.Comonad
 import Control.DeepSeq
-import Control.Monad
 import Data.Binary as Binary
 import Data.Bytes.Serial
 import Data.Data
@@ -56,8 +53,6 @@
 import Text.Read as T
 import Text.Show as T
 
-{-# ANN module "HLint: ignore Eta reduce" #-}
-
 -- $setup
 -- >>> let Exp x ~= Exp y = abs ((exp x-exp y) / exp x) < 0.01
 
@@ -209,16 +204,16 @@
 -- >>> 1 - 3 :: Log Float
 -- NaN
 --
--- >>> (Exp (1/0)) - (Exp (1/0)) :: Log Double
+-- >>> Exp (1/0) - Exp (1/0) :: Log Double
 -- NaN
 --
 -- >>> 0 - 0 :: Log Double
 -- 0.0
 --
--- >>> 0 - (Exp (1/0)) :: Log Double
+-- >>> 0 - Exp (1/0) :: Log Double
 -- NaN
 --
--- >>> (Exp (1/0)) - 0.0 :: Log Double
+-- >>> Exp (1/0) - 0.0 :: Log Double
 -- Infinity
 --
 -- Multiplication
@@ -226,19 +221,19 @@
 -- >>> (3 * 2 :: Log Double) ~= 6
 -- True
 --
--- >>> 0 * (Exp (1/0)) :: Log Double
+-- >>> 0 * Exp (1/0) :: Log Double
 -- NaN
 --
--- >>> (Exp (1/0)) * (Exp (1/0)) :: Log Double
+-- >>> Exp (1/0) * Exp (1/0) :: Log Double
 -- Infinity
 --
 -- >>> 0 * 0 :: Log Double
 -- 0.0
 --
--- >>> (Exp (0/0)) * 0 :: Log Double
+-- >>> Exp (0/0) * 0 :: Log Double
 -- NaN
 --
--- >>> (Exp (0/0)) * (Exp (1/0)) :: Log Double
+-- >>> Exp (0/0) * Exp (1/0) :: Log Double
 -- NaN
 --
 -- Addition
@@ -249,10 +244,10 @@
 -- >>> 0 + 0 :: Log Double
 -- 0.0
 --
--- >>> (Exp (1/0)) + (Exp (1/0)) :: Log Double
+-- >>> Exp (1/0) + Exp (1/0) :: Log Double
 -- Infinity
 --
--- >>> (Exp (1/0)) + 0 :: Log Double
+-- >>> Exp (1/0) + 0 :: Log Double
 -- Infinity
 --
 -- Division
@@ -263,13 +258,13 @@
 -- >>> 3 / 0 :: Log Double
 -- Infinity
 --
--- >>> (Exp (1/0)) / 0 :: Log Double
+-- >>> Exp (1/0) / 0 :: Log Double
 -- Infinity
 --
--- >>> 0 / (Exp (1/0)) :: Log Double
+-- >>> 0 / Exp (1/0) :: Log Double
 -- 0.0
 --
--- >>> (Exp (1/0)) / (Exp (1/0)) :: Log Double
+-- >>> Exp (1/0) / Exp (1/0) :: Log Double
 -- NaN
 --
 -- >>> 0 / 0 :: Log Double
@@ -366,9 +361,9 @@
   basicLength (MV_Log v) = M.basicLength v
   basicUnsafeSlice i n (MV_Log v) = MV_Log $ M.basicUnsafeSlice i n v
   basicOverlaps (MV_Log v1) (MV_Log v2) = M.basicOverlaps v1 v2
-  basicUnsafeNew n = MV_Log `liftM` M.basicUnsafeNew n
-  basicUnsafeReplicate n (Exp x) = MV_Log `liftM` M.basicUnsafeReplicate n x
-  basicUnsafeRead (MV_Log v) i = Exp `liftM` M.basicUnsafeRead v i
+  basicUnsafeNew n = MV_Log <$> M.basicUnsafeNew n
+  basicUnsafeReplicate n (Exp x) = MV_Log <$> M.basicUnsafeReplicate n x
+  basicUnsafeRead (MV_Log v) i = Exp <$> M.basicUnsafeRead v i
   basicUnsafeWrite (MV_Log v) i (Exp x) = M.basicUnsafeWrite v i x
   basicClear (MV_Log v) = M.basicClear v
 #if MIN_VERSION_vector(0,11,0)
@@ -376,7 +371,7 @@
 #endif
   basicSet (MV_Log v) (Exp x) = M.basicSet v x
   basicUnsafeCopy (MV_Log v1) (MV_Log v2) = M.basicUnsafeCopy v1 v2
-  basicUnsafeGrow (MV_Log v) n = MV_Log `liftM` M.basicUnsafeGrow v n
+  basicUnsafeGrow (MV_Log v) n = MV_Log <$> M.basicUnsafeGrow v n
 
 instance (RealFloat a, Unbox a) => G.Vector U.Vector (Log a) where
   {-# INLINE basicUnsafeFreeze #-}
@@ -385,11 +380,11 @@
   {-# INLINE basicUnsafeSlice #-}
   {-# INLINE basicUnsafeIndexM #-}
   {-# INLINE elemseq #-}
-  basicUnsafeFreeze (MV_Log v) = V_Log `liftM` G.basicUnsafeFreeze v
-  basicUnsafeThaw (V_Log v) = MV_Log `liftM` G.basicUnsafeThaw v
+  basicUnsafeFreeze (MV_Log v) = V_Log <$> G.basicUnsafeFreeze v
+  basicUnsafeThaw (V_Log v) = MV_Log <$> G.basicUnsafeThaw v
   basicLength (V_Log v) = G.basicLength v
   basicUnsafeSlice i n (V_Log v) = V_Log $ G.basicUnsafeSlice i n v
-  basicUnsafeIndexM (V_Log v) i = Exp `liftM` G.basicUnsafeIndexM v i
+  basicUnsafeIndexM (V_Log v) i = Exp <$> G.basicUnsafeIndexM v i
   basicUnsafeCopy (MV_Log mv) (V_Log v) = G.basicUnsafeCopy mv v
   elemseq _ (Exp x) z = G.elemseq (undefined :: U.Vector a) x z
 
diff --git a/src/Numeric/Log/Signed.hs b/src/Numeric/Log/Signed.hs
--- a/src/Numeric/Log/Signed.hs
+++ b/src/Numeric/Log/Signed.hs
@@ -30,9 +30,6 @@
 import Data.Functor ((<$>))
 #endif
 
--- $setup
--- >>> let SLExp sX x ~= SLExp sY y = abs ((exp x-(multSign (nxor sX sY) (exp y))) / exp x) < 0.01
-
 -- | @Log@-domain @Float@ and @Double@ values, with a sign bit.
 data SignedLog a = SLExp { signSL :: Bool, lnSL :: a} deriving (Data, Typeable, Generic)
 
@@ -83,6 +80,13 @@
 nxor = (==)
 
 -- $SignedLogNumTests
+--
+-- Repeating internals, add testing function (~=)
+--
+-- >>> let nxor = (==)
+-- >>> let multSign b = if b then id else (*) (-1)
+--
+-- >>> let SLExp sX x ~= SLExp sY y = abs ((exp x-(multSign (nxor sX sY) (exp y))) / exp x) < 0.01
 --
 -- Subtraction
 --
diff --git a/tests/doctests.hs b/tests/doctests.hs
deleted file mode 100644
--- a/tests/doctests.hs
+++ /dev/null
@@ -1,25 +0,0 @@
------------------------------------------------------------------------------
--- |
--- Module      :  Main (doctests)
--- Copyright   :  (C) 2012-14 Edward Kmett
--- License     :  BSD-style (see the file LICENSE)
--- Maintainer  :  Edward Kmett <ekmett@gmail.com>
--- Stability   :  provisional
--- Portability :  portable
---
--- This module provides doctests for a project based on the actual versions
--- of the packages it was built with. It requires a corresponding Setup.lhs
--- to be added to the project
------------------------------------------------------------------------------
-module Main where
-
-import Build_doctests (flags, pkgs, module_sources)
-import Data.Foldable (traverse_)
-import Test.DocTest
-
-main :: IO ()
-main = do
-    traverse_ putStrLn args
-    doctest args
-  where
-    args = flags ++ pkgs ++ module_sources
diff --git a/travis/cabal-apt-install b/travis/cabal-apt-install
deleted file mode 100644
--- a/travis/cabal-apt-install
+++ /dev/null
@@ -1,27 +0,0 @@
-#! /bin/bash
-set -eu
-
-APT="sudo apt-get -q -y"
-CABAL_INSTALL_DEPS="cabal install --only-dependencies --force-reinstall"
-
-$APT update
-$APT install dctrl-tools
-
-# Find potential system packages to satisfy cabal dependencies
-deps()
-{
-	local M='^\([^ ]\+\)-[0-9.]\+ (.*$'
-	local G=' -o ( -FPackage -X libghc-\L\1\E-dev )'
-	local E="$($CABAL_INSTALL_DEPS "$@" --dry-run -v 2> /dev/null \
-		| sed -ne "s/$M/$G/p" | sort -u)"
-	grep-aptavail -n -sPackage \( -FNone -X None \) $E | sort -u
-}
-
-$APT install $(deps "$@") libghc-quickcheck2-dev # QuickCheck is special
-$CABAL_INSTALL_DEPS "$@" # Install the rest via Hackage
-
-if ! $APT install hlint ; then
-	$APT install $(deps hlint)
-	cabal install hlint
-fi
-
diff --git a/travis/config b/travis/config
deleted file mode 100644
--- a/travis/config
+++ /dev/null
@@ -1,16 +0,0 @@
--- This provides a custom ~/.cabal/config file for use when hackage is down that should work on unix
---
--- This is particularly useful for travis-ci to get it to stop complaining
--- about a broken build when everything is still correct on our end.
---
--- This uses Luite Stegeman's mirror of hackage provided by his 'hdiff' site instead
---
--- To enable this, uncomment the before_script in .travis.yml
-
-remote-repo: hdiff.luite.com:http://hdiff.luite.com/packages/archive
-remote-repo-cache: ~/.cabal/packages
-world-file: ~/.cabal/world
-build-summary: ~/.cabal/logs/build.log
-remote-build-reporting: anonymous
-install-dirs user
-install-dirs global