1 files changed, 50 insertions, 0 deletions
diff --git a/lib/fftease.h b/lib/fftease.h
new file mode 100644
index 0000000..30b39e9
--- /dev/null
+++ b/lib/fftease.h
@@ -0,0 +1,50 @@
+#include <stdio.h>
+#include <math.h>
+#include <string.h>
+
+#define FORWARD 1
+#define INVERSE 0
+
+#ifndef PI
+#define PI 3.141592653589793115997963468544185161590576171875 
+#endif
+
+#ifndef TWOPI
+#define TWOPI 6.28318530717958623199592693708837032318115234375
+#endif
+
+#define FFTEASE_ANNOUNCEMENT "- a member of FFTease 2.5\nby Eric Lyon and Christopher Penrose"
+
+#define MAX_N (16384)
+#define MAX_Nw (MAX_N * 4)
+#define MAX_N2 (MAX_N/2)
+
+void rfft( float *x, int N, int forward );
+void cfft( float *x, int NC, int forward );
+void convert(float *S, float *C, int N2, float *lastphase, float fundamental, float factor );
+void unconvert( float *C, float *S, int N2, float *lastphase, float fundamental,  float factor );
+void leanconvert( float *S, float *C, int N2 );
+void leanunconvert( float *C, float *S, int N2 );
+void makewindows( float *H, float *A, float *S, int Nw, int N, int I );
+void makehamming( float *H, float *A, float *S, int Nw, int N, int I,int odd );
+void makehanning( float *H, float *A, float *S, int Nw, int N, int I,int odd );
+void fold( float *I, float *W, int Nw, float *O, int N, int n );
+void overlapadd( float *I, int N, float *W, float *O, int Nw, int n );
+void bitreverse( float *x, int N );
+void bloscbank( float *S, float *O, int D, float iD, float *lf, float *la, float *bindex, float *tab, 
+	int len, float synt, int lo, int hi );
+/* fast fft calls */
+void makect(int nc, int *ip, float *c);
+void makewt(int nw, int *ip, float *w);
+void rftsub(int n, float *a, int nc, float *c);
+void cftsub(int n, float *a, float *w);
+void bitrv2(int n, int *ip, float *a);
+void rdft(int n, int isgn, float *a, int *ip, float *w);
+void init_rdft(int n, int *ip, float *w);
+/* rands */
+float randf( float min, float max );
+int randi( int min, int max );
+int power_of_two(int test);
+
+void limit_fftsize(int *N, int *Nw, char *OBJECT_NAME);
+