updated libquantum 0.1.0 source files

expn.c

@@ -0,0 +1,28 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <math.h>
+
+#include "defs.h"
+#include "gates.h"
+#include "omuln.h"
+#include "qureg.h"
+
+void 
+quantum_exp_mod_n(int N, int x, int width_input, int width, quantum_reg *reg)
+{
+	
+	int i, j, f;
+	
+	
+
+	quantum_sigma_x(2*width+2, reg);
+	for (i=1; i<=width_input;i++){
+		f=x%N;			//compute
+		for (j=1;j<i;j++)
+		  { 
+		    f*=f;	//x^2^(i-1)
+		    f= f%N;
+		  }
+		mul_mod_n(N,f,3*width+1+i, width, reg);
+		}
+	}