--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/peck_fftr.h	Fri Sep 16 12:53:08 2011 +0200
@@ -0,0 +1,43 @@
+#ifndef PECK_FFTR_H
+#define PECK_FFTR_H
+
+#include "peck_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 peck_fftr_state *peck_fftr_cfg;
+
+/* 
+ * peck_fftr_alloc()
+ * nfft must be even
+ *
+ * If you don't care to allocate space, use mem = lenmem = NULL.
+ */
+peck_fftr_cfg peck_fftr_alloc(int nfft, int inverse_fft, void * mem, size_t * lenmem);
+
+/*
+ * peck_fftr()
+ * input timedata has nfft scalar points
+ * output freqdata has nfft/2+1 complex points
+ */
+void peck_fftr(peck_fftr_cfg cfg,const peck_fft_scalar *timedata, peck_fft_cpx *freqdata);
+
+/*
+ * peck_fftri()
+ * input freqdata has  nfft/2+1 complex points
+ * output timedata has nfft scalar points
+ */
+void peck_fftri(peck_fftr_cfg cfg,const peck_fft_cpx *freqdata, peck_fft_scalar *timedata);
+
+#define peck_fftr_free free
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PECK_FFTR_H */