Fix.

src/owl/fftpack/owl_fftpack_impl.h

@@ -3,12 +3,6 @@
  * Copyright (c) 2016-2022 Liang Wang <[email protected]>
  */
 
-Moved definition of functions away from extern code.
-
-    - Moved the definition of the C functions outside the extern C,
-    while preserved their declaration inside the extern C code.
-
-    This is an attempt to fix the compilation under MacOS.
 #ifdef Treal
 
 #ifdef CAML_COMPATIBILITY_H
@@ -21,10 +15,10 @@ Moved definition of functions away from extern code.
 #define invalid_argument caml_invalid_argument
 #endif
 
-    /** Owl's interface function to pocketfft **/
-    /** Adapted from scipy's pypocketfft.cxx **/
+/** Owl's interface function to pocketfft **/
+/** Adapted from scipy's pypocketfft.cxx **/
 
-    using namespace pocketfft::detail;
+using namespace pocketfft::detail;
 
 template <typename T>
 T norm_fct(int inorm, size_t N)