Added default parameters.

Author: berndporr

README.md

@@ -12,7 +12,7 @@ The basic usage for 1-d complex FFT is:
 ```
 #include "kiss_fft.h"
 
-kiss_fft_cfg cfg = kiss_fft_alloc( nfft, is_inverse_fft, nullptr, nullptr );
+kiss_fft_cfg cfg = kiss_fft_alloc( nfft, is_inverse_fft );
 kiss_fft_cpx *cx_in = new kiss_fft_cpx[nfft];
 kiss_fft_cpx *cx_out = new kiss_fft_cpx[nfft];
     
@@ -42,7 +42,7 @@ A real valued optimized FFT which takes real valued signals as its input is impl
 ```
 #include "kiss_fftr.h"
 
-kiss_fftr_cfg cfg = kiss_fftr_alloc(nfft, 0, nullptr, nullptr);
+kiss_fftr_cfg cfg = kiss_fftr_alloc(nfft, 0);
 kiss_fft_scalar *cx_in = new kiss_fft_scalar[nfft];
 kiss_fft_cpx *cx_out = new kiss_fft_cpx[nfft/2+1];
 
@@ -62,7 +62,7 @@ delete[] cx_out;
 ```
 #include "kiss_fftr.h"
 
-kiss_fftr_cfg cfg = kiss_fftr_alloc(nfft, 1, nullptr, nullptr);
+kiss_fftr_cfg cfg = kiss_fftr_alloc(nfft, 1);
 kiss_fft_cpx *cx_in = new kiss_fft_cpx[nfft/2+1];
 kiss_fft_scalar *cx_out = new kiss_fft_scalar[nfft];
 

jnifft/src/main/cpp/kiss-fft-lib.cpp

@@ -24,7 +24,7 @@ Java_uk_me_berndporr_kiss_1fft_KISSFastFourierTransformer_dofft(JNIEnv *env, job
         return NULL;
     }
 
-    kiss_fft_cfg cfg = kiss_fft_alloc(n, is_inverse, 0, 0);
+    kiss_fft_cfg cfg = kiss_fft_alloc(n, is_inverse);
 
     double *inValues = env->GetDoubleArrayElements(inArray, 0);
 
@@ -61,7 +61,7 @@ Java_uk_me_berndporr_kiss_1fft_KISSFastFourierTransformer_dofftdouble(JNIEnv *en
         return NULL;
     }
 
-    kiss_fft_cfg cfg = kiss_fft_alloc(n, is_inverse, 0, 0);
+    kiss_fft_cfg cfg = kiss_fft_alloc(n, is_inverse);
     kiss_fft_cpx *inArray = new kiss_fft_cpx[n];
     kiss_fft_cpx *outArray = new kiss_fft_cpx[n];
 
@@ -114,7 +114,7 @@ Java_uk_me_berndporr_kiss_1fft_KISSFastFourierTransformer_dofftr(JNIEnv *env, jo
     }
 
     int is_inverse = 0;
-    kiss_fftr_cfg cfg = kiss_fftr_alloc(n, is_inverse, 0, 0);
+    kiss_fftr_cfg cfg = kiss_fftr_alloc(n, is_inverse);
     kiss_fft_cpx *outArray = new kiss_fft_cpx[n];
 
     double *values = env->GetDoubleArrayElements(data, 0);
@@ -167,7 +167,7 @@ Java_uk_me_berndporr_kiss_1fft_KISSFastFourierTransformer_dofftri(JNIEnv *env, j
     // length of real sequence
     int real_data_points = 2 * n - 2;
 
-    kiss_fftr_cfg cfg = kiss_fftr_alloc(real_data_points, is_inverse, 0, 0);
+    kiss_fftr_cfg cfg = kiss_fftr_alloc(real_data_points, is_inverse);
     kiss_fft_cpx *inArray = new kiss_fft_cpx[n];
 
     for (int j = 0; j < n; j++) {

kiss_fft.h

@@ -6,32 +6,14 @@
 #include <math.h>
 #include <string.h>
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 #define KISS_FFT_MALLOC malloc
 #define KISS_FFT_FREE free
-
-
-#ifdef FIXED_POINT
-#include <sys/types.h>	
-# if (FIXED_POINT == 32)
-#  define kiss_fft_scalar int32_t
-# else	
-#  define kiss_fft_scalar int16_t
-# endif
-#else
-# ifndef kiss_fft_scalar
-/*  default is double */
-#   define kiss_fft_scalar double
-# endif
-#endif
+#define kiss_fft_scalar double
 
 typedef struct {
     kiss_fft_scalar r;
     kiss_fft_scalar i;
-}kiss_fft_cpx;
+} kiss_fft_cpx;
 
 typedef struct kiss_fft_state* kiss_fft_cfg;
 
@@ -40,8 +22,8 @@ typedef struct kiss_fft_state* kiss_fft_cfg;
  *  
  *  Initialize a FFT (or IFFT) algorithm's cfg/state buffer.
  *
- *  typical usage:      kiss_fft_cfg mycfg=kiss_fft_alloc(1024,0,NULL,NULL); for FFT
- *                      kiss_fft_cfg mycfg=kiss_fft_alloc(1024,1,NULL,NULL); for IFFT
+ *  typical usage:      kiss_fft_cfg mycfg=kiss_fft_alloc(1024,0); for FFT
+ *                      kiss_fft_cfg mycfg=kiss_fft_alloc(1024,1); for IFFT
  *
  *  The return value from fft_alloc is a cfg buffer used internally
  *  by the fft routine or NULL.
@@ -61,7 +43,7 @@ typedef struct kiss_fft_state* kiss_fft_cfg;
  *      buffer size in *lenmem.
  * */
 
-kiss_fft_cfg kiss_fft_alloc(int nfft,int inverse_fft,void * mem,size_t * lenmem); 
+kiss_fft_cfg kiss_fft_alloc(int nfft,int inverse_fft,void * mem = nullptr,size_t * lenmem = nullptr); 
 
 /*
  * kiss_fft(cfg,in_out_buf)
@@ -93,8 +75,4 @@ int kiss_fft_next_fast_size(int n);
 #define kiss_fftr_next_fast_size_real(n) \
         (kiss_fft_next_fast_size( ((n)+1)>>1)<<1)
 
-#ifdef __cplusplus
-} 
-#endif
-
 #endif

kiss_fftr.h

@@ -2,23 +2,17 @@
 #define KISS_FTR_H
 
 #include "kiss_fft.h"
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 
 /* 
  
  Real optimized version can save about 45% cpu time vs. complex fft of a real seq.
 
- 
- 
  */
 
 typedef struct kiss_fftr_state *kiss_fftr_cfg;
 
 
-kiss_fftr_cfg kiss_fftr_alloc(int nfft,int inverse_fft,void * mem, size_t * lenmem);
+kiss_fftr_cfg kiss_fftr_alloc(int nfft,int inverse_fft,void * mem = nullptr, size_t * lenmem = nullptr);
 /*
  nfft must be even
 
@@ -40,7 +34,4 @@ void kiss_fftri(kiss_fftr_cfg cfg,const kiss_fft_cpx *freqdata,kiss_fft_scalar *
 
 #define kiss_fftr_free free
 
-#ifdef __cplusplus
-}
-#endif
 #endif