Check for MSVC types

config/cmake/ConfigureChecks.cmake

@@ -824,6 +824,19 @@ HDF_CHECK_TYPE_SIZE ("float _Complex" ${HDF_PREFIX}_SIZEOF_FLOAT_COMPLEX)
 HDF_CHECK_TYPE_SIZE ("double _Complex" ${HDF_PREFIX}_SIZEOF_DOUBLE_COMPLEX)
 HDF_CHECK_TYPE_SIZE ("long double _Complex" ${HDF_PREFIX}_SIZEOF_LONG_DOUBLE_COMPLEX)
 
+if (MSVC AND NOT ${HDF_PREFIX}_SIZEOF_FLOAT_COMPLEX AND NOT ${HDF_PREFIX}_SIZEOF_DOUBLE_COMPLEX
+    AND NOT ${HDF_PREFIX}_SIZEOF_LONG_DOUBLE_COMPLEX)
+  # If using MSVC, the _Complex types (if available) are _Fcomplex, _Dcomplex and _Lcomplex.
+  # The standard types are checked for first in case MSVC uses them in the future or in case
+  # the compiler used is simulating MSVC and uses the standard types.
+  unset (${HDF_PREFIX}_SIZEOF_FLOAT_COMPLEX CACHE)
+  unset (${HDF_PREFIX}_SIZEOF_DOUBLE_COMPLEX CACHE)
+  unset (${HDF_PREFIX}_SIZEOF_LONG_DOUBLE_COMPLEX CACHE)
+  HDF_CHECK_TYPE_SIZE ("_Fcomplex" ${HDF_PREFIX}_SIZEOF_FLOAT_COMPLEX)
+  HDF_CHECK_TYPE_SIZE ("_Dcomplex" ${HDF_PREFIX}_SIZEOF_DOUBLE_COMPLEX)
+  HDF_CHECK_TYPE_SIZE ("_Lcomplex" ${HDF_PREFIX}_SIZEOF_LONG_DOUBLE_COMPLEX)
+endif ()
+
 if (${HDF_PREFIX}_SIZEOF_FLOAT_COMPLEX AND ${HDF_PREFIX}_SIZEOF_DOUBLE_COMPLEX AND
     ${HDF_PREFIX}_SIZEOF_LONG_DOUBLE_COMPLEX)
   # Check if __STDC_NO_COMPLEX__ macro is defined, in which case complex number