refactor: some internal headers moce to the _bits/external_ subdirectory

src/core-fmt/include/mp-units/format.h

@@ -22,7 +22,7 @@
 
 #pragma once
 
-#include <mp-units/bits/algorithm.h>
+#include <mp-units/bits/external/algorithm.h>
 #include <mp-units/bits/fmt.h>
 #include <mp-units/customization_points.h>
 #include <mp-units/quantity.h>

src/core/CMakeLists.txt

@@ -31,19 +31,19 @@ endif()
 add_library(
     mp-units-core
     INTERFACE
+    include/mp-units/bits/external/algorithm.h
     include/mp-units/bits/external/fixed_string.h
     include/mp-units/bits/external/hacks.h
+    include/mp-units/bits/external/math_concepts.h
+    include/mp-units/bits/external/prime.h
     include/mp-units/bits/external/type_list.h
     include/mp-units/bits/external/type_name.h
     include/mp-units/bits/external/type_traits.h
-    include/mp-units/bits/algorithm.h
     include/mp-units/bits/dimension_concepts.h
     include/mp-units/bits/expression_template.h
     include/mp-units/bits/get_associated_quantity.h
     include/mp-units/bits/get_common_base.h
     include/mp-units/bits/magnitude.h
-    include/mp-units/bits/math_concepts.h
-    include/mp-units/bits/prime.h
     include/mp-units/bits/quantity_cast.h
     include/mp-units/bits/quantity_concepts.h
     include/mp-units/bits/quantity_point_concepts.h

src/core/include/mp-units/bits/expression_template.h

@@ -22,9 +22,9 @@
 
 #pragma once
 
+#include <mp-units/bits/external/math_concepts.h>
 #include <mp-units/bits/external/type_list.h>
 #include <mp-units/bits/external/type_traits.h>
-#include <mp-units/bits/math_concepts.h>
 #include <mp-units/bits/ratio.h>
 
 namespace mp_units {

src/core/include/mp-units/bits/external/fixed_string.h

@@ -24,7 +24,7 @@
 
 #include <mp-units/bits/external/hacks.h>  // IWYU pragma: keep
 // TODO use <algorithm> when moved to C++20 modules (parsing takes too long for each translation unit)
-#include <mp-units/bits/algorithm.h>
+#include <mp-units/bits/external/algorithm.h>
 
 // IWYU pragma: begin_exports
 #include <compare>

src/core/include/mp-units/bits/external/prime.h

@@ -22,7 +22,7 @@
 
 #pragma once
 
-#include <mp-units/bits/algorithm.h>
+#include <mp-units/bits/external/algorithm.h>
 #include <array>
 #include <cstddef>
 #include <cstdint>

src/core/include/mp-units/bits/magnitude.h

@@ -24,10 +24,10 @@
 
 #include <mp-units/bits/expression_template.h>
 #include <mp-units/bits/external/hacks.h>
+#include <mp-units/bits/external/math_concepts.h>
+#include <mp-units/bits/external/prime.h>
 #include <mp-units/bits/external/type_name.h>
 #include <mp-units/bits/external/type_traits.h>
-#include <mp-units/bits/math_concepts.h>
-#include <mp-units/bits/prime.h>
 #include <mp-units/bits/ratio.h>
 #include <mp-units/bits/symbol_text.h>
 #include <mp-units/bits/text_tools.h>

src/core/include/mp-units/quantity_spec.h

@@ -22,8 +22,8 @@
 
 #pragma once
 
-#include <mp-units/bits/algorithm.h>
 #include <mp-units/bits/expression_template.h>
+#include <mp-units/bits/external/algorithm.h>
 #include <mp-units/bits/external/type_name.h>
 #include <mp-units/bits/external/type_traits.h>
 #include <mp-units/bits/get_common_base.h>

src/core/include/mp-units/unit.h

@@ -22,8 +22,8 @@
 
 #pragma once
 
-#include <mp-units/bits/algorithm.h>
 #include <mp-units/bits/expression_template.h>
+#include <mp-units/bits/external/algorithm.h>
 #include <mp-units/bits/external/fixed_string.h>
 #include <mp-units/bits/external/type_name.h>
 #include <mp-units/bits/external/type_traits.h>

test/unit_test/static/prime_test.cpp

@@ -20,7 +20,7 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 // SOFTWARE.
 
-#include <mp-units/bits/prime.h>
+#include <mp-units/bits/external/prime.h>
 #include <type_traits>
 #include <utility>