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Diffstat (limited to 'gr-fft/include/gnuradio/fft/window.h')
-rw-r--r--gr-fft/include/gnuradio/fft/window.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/gr-fft/include/gnuradio/fft/window.h b/gr-fft/include/gnuradio/fft/window.h
index b7479f48fb..4a7fb44ff9 100644
--- a/gr-fft/include/gnuradio/fft/window.h
+++ b/gr-fft/include/gnuradio/fft/window.h
@@ -20,6 +20,9 @@
* Boston, MA 02110-1301, USA.
*/
+#ifndef INCLUDED_FFT_WINDOW_H
+#define INCLUDED_FFT_WINDOW_H
+
#include <gnuradio/fft/api.h>
#include <vector>
#include <cmath>
@@ -268,3 +271,5 @@ namespace gr {
} /* namespace fft */
} /* namespace gr */
+
+#endif /* INCLUDED_FFT_WINDOW_H */