diff --git a/.project b/.project
new file mode 100644
index 0000000..fe65065
--- /dev/null
+++ b/.project
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Theta_fourier</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+	</buildSpec>
+	<natures>
+	</natures>
+</projectDescription>
diff --git a/C/FFT_FP_realisation.c b/C/FFT_FP_realisation.c
index 07eff61..ec6bdf1 100644
--- a/C/FFT_FP_realisation.c
+++ b/C/FFT_FP_realisation.c
@@ -3,8 +3,10 @@
 #include <math.h>
 #include <stdio.h>
 
+#ifndef FFT_FP_EXTERNAL_TWIDDLES
 static int64_t twiddle_re[TWIDDLE_L] = {0,};
 static int64_t twiddle_im[TWIDDLE_L] = {0,};
+#endif
 
 void fft_twiddle_gen(int64_t* tw_re, int64_t* tw_im){
 	for (uint32_t k = 0; k < TWIDDLE_L; ++k){
diff --git a/C/FFT_FP_realisation.h b/C/FFT_FP_realisation.h
index 4df8244..6331ce8 100644
--- a/C/FFT_FP_realisation.h
+++ b/C/FFT_FP_realisation.h
@@ -19,6 +19,11 @@
 #define PI 3.141592653589793238462643383279502884197169399375105820974944
 #endif
 
+#ifdef FFT_FP_EXTERNAL_TWIDDLES
+extern int64_t twiddle_re[TWIDDLE_L];
+extern int64_t twiddle_im[TWIDDLE_L];
+#endif
+
 void fft_twiddle_gen(int64_t* twiddle_re, int64_t* twiddle_im);
 void fft_fp_prepare(void);
 void FFT_fp(int64_t* inp, uint32_t inp_L, int64_t* buf);