Version 5.1.

Changed alignment in the `CFixedBuffer` class to 64 bytes. This improves AVX performance of the `PFFFT DOUBLE` implementation by a few percent.
Removed redundant files from the `pffft_double` folder, integrated the `pffft_common.c` file into the `pffft_double.c` file.

Author: avaneev

README.md

@@ -160,9 +160,9 @@ This SRC library also implements a much faster "power of 2" resampling (e.g.
 which is engaged automatically if the resampling parameters permit.
 
 This library was tested for compatibility with [GNU C++](https://gcc.gnu.org/),
-[Microsoft Visual C++](https://visualstudio.microsoft.com/) and
-[Intel C++](https://software.intel.com/en-us/c-compilers) compilers, on 32-
-and 64-bit Windows, macOS, and CentOS Linux.
+[Microsoft Visual C++](https://visualstudio.microsoft.com/),
+[LLVM](https://llvm.org/) and [Intel C++](https://software.intel.com/en-us/c-compilers)
+compilers, on 32- and 64-bit Windows, macOS, and CentOS Linux.
 
 Most code is "inline", without the need to compile many source files. The
 memory footprint is quite modest.
@@ -194,9 +194,10 @@ This library is used by:
 * [TensorVox](https://github.com/ZDisket/TensorVox)
 * [Curvessor](https://github.com/unevens/Curvessor)
 
-Please drop me a note at [email protected] and I will include a link to
-your software product to the list of users. This list is important at
-maintaining confidence in this library among the interested parties.
+Please send me a note via [email protected] and I will include a link
+to your software product to this list of users. This list is important in
+maintaining confidence in this library among the interested parties. The
+inclusion into this list is not mandatory.
 
 ## Other ##
 
@@ -206,6 +207,13 @@ maintaining confidence in this library among the interested parties.
 
 ## Change Log ##
 
+Version 5.1:
+
+* Changed alignment in the `CFixedBuffer` class to 64 bytes. This improves AVX
+performance of the `PFFFT DOUBLE` implementation by a few percent.
+* Removed redundant files from the `pffft_double` folder, integrated the
+`pffft_common.c` file into the `pffft_double.c` file.
+
 Version 5.0:
 
 * Removed a long-outdated macros from the `r8bconf.h` file.

bench/zerotest.cpp

@@ -43,7 +43,7 @@ VOXMAIN
 	CWaveFile inf;
 	VOXCHECK( inf.loadFile( *Args.getArgValue( "in-file" ).ValueStr ));
 
-	const int InBufSize = (int) min( 50000, inf.SampleCount );
+	const int InBufSize = (int) min( (int64_t) 50000, inf.SampleCount );
 
 	CInitArray< CFixedBuffer< double > > InBufs( inf.ChannelCount );
 	int i;

pffft.h

@@ -78,7 +78,7 @@
 #define PFFFT_H
 
 #include <stddef.h> // for size_t
-#include <stdint.h> // Addition by AV.
+#include <stdint.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -90,12 +90,17 @@ extern "C" {
   */
   typedef struct PFFFT_Setup PFFFT_Setup;
 
+#ifndef PFFFT_COMMON_ENUMS
+#define PFFFT_COMMON_ENUMS
+
   /* direction of the transform */
   typedef enum { PFFFT_FORWARD, PFFFT_BACKWARD } pffft_direction_t;
 
   /* type of transform */
   typedef enum { PFFFT_REAL, PFFFT_COMPLEX } pffft_transform_t;
 
+#endif
+
   /*
     prepare for performing transforms of size N -- the returned
     PFFFT_Setup structure is read-only so it can safely be shared by