1 files changed, 18 insertions, 0 deletions
diff --git a/externals/vanilla/e_fft.h b/externals/vanilla/e_fft.h
new file mode 100644
index 00000000..e5b1674c
--- /dev/null
+++ b/externals/vanilla/e_fft.h
@@ -0,0 +1,18 @@
+/* Copyright (c) 1997- Miller Puckette and others.
+* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.  */
+
+#include "m_pd.h"
+
+typedef struct fft
+{
+    t_object x_obj;
+    t_float x_f;
+} t_sigfft;
+
+t_int *sigfft_swap(t_int *w); /* swap two arrays */
+    /* take array1 (supply a pointer to beginning) and copy it,
+    into decreasing addresses, into array 2 (supply a pointer one past the
+    end), and negate the sign. */
+t_int *sigrfft_flip(t_int *w);
+void sigfft_dspx(t_sigfft *x, t_signal **sp, t_int *(*f)(t_int *w));