--- /dev/null
+#[===[.md:
+# vcpkg_get_program_files_platform_bitness
+
+Get the Program Files directory of the current platform's bitness:
+either `$ENV{ProgramW6432}` on 64-bit windows,
+or `$ENV{PROGRAMFILES}` on 32-bit windows.
+
+## Usage:
+```cmake
+vcpkg_get_program_files_platform_bitness(<variable>)
+```
+#]===]
+
+function(vcpkg_get_program_files_platform_bitness ret)
+
+ set(ret_temp $ENV{ProgramW6432})
+ if (NOT DEFINED ret_temp)
+ set(ret_temp $ENV{PROGRAMFILES})
+ endif()
+
+ set(${ret} ${ret_temp} PARENT_SCOPE)
+
+endfunction()