# HG changeset patch
# User Peter Meerwald <p.meerwald@bct-electronic.com>
# Date 1316171300 -7200
# Node ID 3b31bd44a09f7975d07f047952b78993b97ffe35
# Parent  3d08140650d8d32e50e60bdc387c521cec3de13c
cleanup

diff -r 3d08140650d8 -r 3b31bd44a09f peck_fft.h
--- a/peck_fft.h	Fri Sep 16 13:02:34 2011 +0200
+++ b/peck_fft.h	Fri Sep 16 13:08:20 2011 +0200
@@ -43,16 +43,16 @@
 typedef struct peck_fft_state* peck_fft_cfg;
 
 /* 
- *  peck_fft_alloc
+ *  peck_fft_alloc()
  *  
- *  Initialize a FFT (or IFFT) algorithm's cfg/state buffer.
+ *  Initialize a FFT (or IFFT) algorithm's cfg buffer.
  *
- *  typical usage:      peck_fft_cfg mycfg=peck_fft_alloc(1024,0,NULL,NULL);
+ *  typical usage: peck_fft_cfg mycfg = peck_fft_alloc(1024, 0, NULL, NULL);
  *
- *  The return value from fft_alloc is a cfg buffer used internally
- *  by the fft routine or NULL.
+ *  The return value from fft_alloc() is a cfg buffer used internally
+ *  by the FFT routine or NULL.
  *
- *  If lenmem is NULL, then peck_fft_alloc will allocate a cfg buffer using malloc.
+ *  If lenmem is NULL, then peck_fft_alloc() will allocate a cfg buffer using malloc.
  *  The returned value should be free()d when done to avoid memory leaks.
  *  
  *  The state can be placed in a user supplied buffer 'mem':
@@ -63,46 +63,41 @@
  *  If lenmem is not NULL and ( mem is NULL or *lenmem is not large enough),
  *      then the function returns NULL and places the minimum cfg 
  *      buffer size in *lenmem.
- * */
+ */
 
 peck_fft_cfg peck_fft_alloc(int nfft,int inverse_fft,void * mem,size_t * lenmem); 
 
 /*
- * peck_fft(cfg,in_out_buf)
+ * peck_fft(cfg, in_buf, out_buf)
  *
  * Perform an FFT on a complex input buffer.
- * for a forward FFT,
- * fin should be  f[0] , f[1] , ... ,f[nfft-1]
- * fout will be   F[0] , F[1] , ... ,F[nfft-1]
+ * For a forward FFT,
+ *   fin should be  f[0], f[1], ... , f[nfft-1]
+ *   fout will be   F[0], F[1], ... , F[nfft-1]
  * Note that each element is complex and can be accessed like
-    f[k].r and f[k].i
- * */
-void peck_fft(peck_fft_cfg cfg,const peck_fft_cpx *fin,peck_fft_cpx *fout);
-
-/*
- A more generic version of the above function. It reads its input from every Nth sample.
- * */
-void peck_fft_stride(peck_fft_cfg cfg,const peck_fft_cpx *fin,peck_fft_cpx *fout,int fin_stride);
+ *   f[k].r and f[k].i
+ */
+void peck_fft(peck_fft_cfg cfg, const peck_fft_cpx *fin, peck_fft_cpx *fout);
 
 /* If peck_fft_alloc allocated a buffer, it is one contiguous 
-   buffer and can be simply free()d when no longer needed*/
+ * buffer and can be simply free()d when no longer needed
+ */
 #define peck_fft_free free
 
 /*
- Cleans up some memory that gets managed internally. Not necessary to call, but it might clean up 
- your compiler output to call this before you exit.
-*/
+ * Cleans up some memory that gets managed internally. Not necessary to call, but it might clean up 
+ * your compiler output to call this before you exit.
+ */
 void peck_fft_cleanup(void);
-	
 
 /*
- * Returns the smallest integer k, such that k>=n and k has only "fast" factors (2,3,5)
+ * Returns the smallest integer k, such that k>=n and k has only 'fast' factors (2,3,5)
  */
 int peck_fft_next_fast_size(int n);
 
 /* for real ffts, we need an even size */
 #define peck_fftr_next_fast_size_real(n) \
-        (peck_fft_next_fast_size( ((n)+1)>>1)<<1)
+    (peck_fft_next_fast_size(((n)+1) >> 1) << 1)
 
 #ifdef __cplusplus
 } 
diff -r 3d08140650d8 -r 3b31bd44a09f peck_fftr.c
--- a/peck_fftr.c	Fri Sep 16 13:02:34 2011 +0200
+++ b/peck_fftr.c	Fri Sep 16 13:08:20 2011 +0200
@@ -58,7 +58,7 @@
             -3.14159265359f * ((float) (i+1) / nfft + 0.5f);
         if (inverse_fft)
             phase *= -1;
-        kf_cexp(st->super_twiddles+i,phase);
+        kf_cexp(st->super_twiddles+i, phase);
     }
     return st;
 }