Inclusion of MPFR for Turaev-Viro computation

CMakeLists.txt

@@ -306,6 +306,15 @@ MACRO_LOG_FEATURE(JANSSON_FOUND
   "Essential: JSON support"
   "http://www.digip.org/jansson/"
   TRUE)
+
+FIND_PACKAGE(MPFR)
+INCLUDE_DIRECTORIES(${MPFR_INCLUDE_DIR})
+MACRO_LOG_FEATURE(MPFR_FOUND
+  "MPFR"
+  "High precision computation"
+  "http://www.mpfr.org/"
+  TRUE)
+
 
 IF (NOT DISABLE_PYTHON)
   MESSAGE (STATUS "Searching for a Python installation")

cmake/modules/FindMPFR.cmake

@@ -0,0 +1,47 @@
+# Try to find the MPFR libraries
+# MPFR_FOUND - system has MPFR lib
+# MPFR_INCLUDE_DIR - the MPFR include directory
+# MPFR_LIBRARIES_DIR - Directory where the MPFR libraries are located
+# MPFR_LIBRARIES - the MPFR libraries
+
+include(FindPackageHandleStandardArgs)
+
+if(MPFR_INCLUDE_DIR)
+  set(MPFR_in_cache TRUE)
+else()
+  set(MPFR_in_cache FALSE)
+endif()
+if(NOT MPFR_LIBRARIES)
+  set(MPFR_in_cache FALSE)
+endif()
+
+# Is it already configured?
+if (NOT MPFR_in_cache)
+
+  find_path(MPFR_INCLUDE_DIR
+            NAMES mpfr.h
+            HINTS ENV MPFR_INC_DIR
+                  ENV MPFR_DIR
+            PATH_SUFFIXES include
+  	        DOC "The directory containing the MPFR header files"
+           )
+
+  find_library(MPFR_LIBRARIES NAMES mpfr libmpfr-4 libmpfr-1
+    HINTS ENV MPFR_LIB_DIR
+          ENV MPFR_DIR
+    PATH_SUFFIXES lib
+    DOC "Path to the MPFR library"
+    )
+
+  if ( MPFR_LIBRARIES )
+    get_filename_component(MPFR_LIBRARIES_DIR ${MPFR_LIBRARIES} PATH CACHE )
+  endif()
+
+  # Attempt to load a user-defined configuration for MPFR if couldn't be found
+  if ( NOT MPFR_INCLUDE_DIR OR NOT MPFR_LIBRARIES_DIR )
+    include( MPFRConfig OPTIONAL )
+  endif()
+
+endif()
+
+find_package_handle_standard_args(MPFR "DEFAULT_MSG" MPFR_LIBRARIES MPFR_INCLUDE_DIR)

engine/CMakeLists.txt

@@ -56,7 +56,7 @@ ADD_LIBRARY("regina-engine" SHARED ${SOURCES} )
 # that build against libregina-engine.
 # Note: PUBLIC and PRIVATE only appeard in CMake 2.8.12.
 # For compatibility back to 2.8.7 we use LINK_PUBLIC and LINK_PRIVATE instead.
-SET(ENGINE_LINK_LIBRARIES ${LIBXML2_LIBRARIES} ${GMP_LIBRARIES} ${GMPXX_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
+SET(ENGINE_LINK_LIBRARIES ${LIBXML2_LIBRARIES} ${GMP_LIBRARIES} ${GMPXX_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT} ${MPFR_LIBRARIES})
 TARGET_LINK_LIBRARIES(regina-engine
   LINK_PUBLIC ${ENGINE_LINK_LIBRARIES}
   LINK_PRIVATE ${STDFS_LIBRARY} "${ICONV_LIBRARY}" ${ZLIB_LIBRARIES} ${JANSSON_LIBRARIES} ${KVSTORE_LIBRARIES})

engine/maths/CMakeLists.txt

@@ -30,6 +30,7 @@ if (${REGINA_INSTALL_DEV})
     matrix.h
     matrix2.h
     matrixops.h
+    mfloat.h
     numbertheory.h
     perm.h
     perm-impl.h