Move detail header floating_conversion.hpp to detail subdirectory (#1…

…7209)

Moves the 'cudf/fixed_point/floating_conversion.hpp' to `cudf/fixed_point/detail/` subdirectory since it only contains declarations and definition in the `detail` namespace.
It had previously been its own module. https://docs.rapids.ai/api/libcudf/stable/modules.html

Authors:
  - David Wendt (https://github.com/davidwendt)

Approvers:
  - Shruti Shivakumar (https://github.com/shrshi)
  - Vyas Ramasubramani (https://github.com/vyasr)
  - Nghia Truong (https://github.com/ttnghia)

URL: #17209

cpp/include/cudf/fixed_point/floating_conversion.hpp → cpp/include/cudf/fixed_point/detail/floating_conversion.hpp

@@ -26,14 +26,6 @@
 #include <cstring>
 
 namespace CUDF_EXPORT numeric {
-
-/**
- * @addtogroup floating_conversion
- * @{
- * @file
- * @brief fixed_point <--> floating-point conversion functions.
- */
-
 namespace detail {
 
 /**
@@ -1141,6 +1133,4 @@ CUDF_HOST_DEVICE inline FloatingType convert_integral_to_floating(Rep const& val
 }
 
 }  // namespace detail
-
-/** @} */  // end of group
 }  // namespace CUDF_EXPORT numeric

cpp/include/cudf/unary.hpp

@@ -16,8 +16,8 @@
 
 #pragma once
 
+#include <cudf/fixed_point/detail/floating_conversion.hpp>
 #include <cudf/fixed_point/fixed_point.hpp>
-#include <cudf/fixed_point/floating_conversion.hpp>
 #include <cudf/types.hpp>
 #include <cudf/utilities/default_stream.hpp>
 #include <cudf/utilities/export.hpp>