Refactor: Improve code clarity, modularity, and style

CMakeLists.txt

@@ -0,0 +1,40 @@
+cmake_minimum_required(VERSION 3.15)
+project(snplib LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+option(USE_MKL "Use Intel MKL" OFF)
+option(USE_OPENBLAS "Use OpenBLAS" OFF)
+
+if(USE_MKL)
+    find_package(MKL REQUIRED)
+    if(MKL_FOUND)
+        include_directories(${MKL_INCLUDE_DIRS})
+        link_libraries(${MKL_LIBRARIES})
+    endif()
+elseif(USE_OPENBLAS)
+    find_package(OpenBLAS REQUIRED)
+    if(OPENBLAS_FOUND)
+        include_directories(${OPENBLAS_INCLUDE_DIRS})
+        link_libraries(${OPENBLAS_LIBRARIES})
+    endif()
+endif()
+
+include_directories(src)
+
+add_library(snplib
+    src/data_manage.cc
+    src/grm.cc
+    src/ibs.cc
+    src/king.cc
+    src/snp.cc
+    src/statistics.cc
+    src/ugrm.cc
+)
+
+target_include_directories(snplib PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/src)
+
+# Example executable
+add_executable(example main.cc)
+target_link_libraries(example snplib)