--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kerneltest/e32utils/nistsecurerng/src/overlappingtemplatematchings.cpp	Wed Sep 15 13:42:27 2010 +0300
@@ -0,0 +1,132 @@
+/*
+* Portions Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: 
+* The original NIST Statistical Test Suite code is placed in public domain.
+* (http://csrc.nist.gov/groups/ST/toolkit/rng/documentation_software.html) 
+* 
+* This software was developed at the National Institute of Standards and Technology by 
+* employees of the Federal Government in the course of their official duties. Pursuant
+* to title 17 Section 105 of the United States Code this software is not subject to 
+* copyright protection and is in the public domain. The NIST Statistical Test Suite is
+* an experimental system. NIST assumes no responsibility whatsoever for its use by other 
+* parties, and makes no guarantees, expressed or implied, about its quality, reliability, 
+* or any other characteristic. We would appreciate acknowledgment if the software is used.
+*/
+
+#include "openc.h"
+#include "../include/externs.h"
+#include "../include/utilities.h"
+#include "../include/cephes.h"  
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+               O V E R L A P P I N G  T E M P L A T E  T E S T
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+double	Pr(int u, double eta);
+
+void
+OverlappingTemplateMatchings(int m, int n)
+{
+	int				i, k, match;
+	double			W_obs, eta, sum, chi2, p_value, lambda;
+	int				M, N, j, K = 5;
+	unsigned int	nu[6] = { 0, 0, 0, 0, 0, 0 };
+	double			pi[6] = { 0.143783, 0.139430, 0.137319, 0.124314, 0.106209, 0.348945 };
+	BitSequence		*sequence;
+
+	M = 1032;
+	N = n/M;
+	
+	if ( (sequence = (BitSequence *) calloc(m, sizeof(BitSequence))) == NULL ) {
+		fprintf(stats[TEST_OVERLAPPING], "\t\t    OVERLAPPING TEMPLATE OF ALL ONES TEST\n");
+		fprintf(stats[TEST_OVERLAPPING], "\t\t---------------------------------------------\n");
+		fprintf(stats[TEST_OVERLAPPING], "\t\tTEMPLATE DEFINITION:  Insufficient memory, Overlapping Template Matchings test aborted!\n");
+	}
+	else
+		for ( i=0; i<m; i++ )
+			sequence[i] = 1;
+	
+	lambda = (double)(M-m+1)/pow(2,m);
+	eta = lambda/2.0;
+	sum = 0.0;
+	for ( i=0; i<K; i++ ) {			/* Compute Probabilities */
+		pi[i] = Pr(i, eta);
+		sum += pi[i];
+	}
+	pi[K] = 1 - sum;
+
+	for ( i=0; i<N; i++ ) {
+		W_obs = 0;
+		for ( j=0; j<M-m+1; j++ ) {
+			match = 1;
+			for ( k=0; k<m; k++ ) {
+				if ( sequence[k] != epsilon[i*M+j+k] )
+					match = 0;
+			}
+			if ( match == 1 )
+				W_obs++;
+		}
+		if ( W_obs <= 4 )
+			nu[(int)W_obs]++;
+		else
+			nu[K]++;
+	}
+	sum = 0;
+	chi2 = 0.0;                                   /* Compute Chi Square */
+	for ( i=0; i<K+1; i++ ) {
+		chi2 += pow((double)nu[i] - (double)N*pi[i], 2)/((double)N*pi[i]);
+		sum += nu[i];
+	}
+	p_value = cephes_igamc(K/2.0, chi2/2.0);
+
+	fprintf(stats[TEST_OVERLAPPING], "\t\t    OVERLAPPING TEMPLATE OF ALL ONES TEST\n");
+	fprintf(stats[TEST_OVERLAPPING], "\t\t-----------------------------------------------\n");
+	fprintf(stats[TEST_OVERLAPPING], "\t\tCOMPUTATIONAL INFORMATION:\n");
+	fprintf(stats[TEST_OVERLAPPING], "\t\t-----------------------------------------------\n");
+	fprintf(stats[TEST_OVERLAPPING], "\t\t(a) n (sequence_length)      = %d\n", n);
+	fprintf(stats[TEST_OVERLAPPING], "\t\t(b) m (block length of 1s)   = %d\n", m);
+	fprintf(stats[TEST_OVERLAPPING], "\t\t(c) M (length of substring)  = %d\n", M);
+	fprintf(stats[TEST_OVERLAPPING], "\t\t(d) N (number of substrings) = %d\n", N);
+	fprintf(stats[TEST_OVERLAPPING], "\t\t(e) lambda [(M-m+1)/2^m]     = %f\n", lambda);
+	fprintf(stats[TEST_OVERLAPPING], "\t\t(f) eta                      = %f\n", eta);
+	fprintf(stats[TEST_OVERLAPPING], "\t\t-----------------------------------------------\n");
+	fprintf(stats[TEST_OVERLAPPING], "\t\t   F R E Q U E N C Y\n");
+	fprintf(stats[TEST_OVERLAPPING], "\t\t  0   1   2   3   4 >=5   Chi^2   P-value  Assignment\n");
+	fprintf(stats[TEST_OVERLAPPING], "\t\t-----------------------------------------------\n");
+	fprintf(stats[TEST_OVERLAPPING], "\t\t%3d %3d %3d %3d %3d %3d  %f ",
+		nu[0], nu[1], nu[2], nu[3], nu[4], nu[5], chi2);
+
+	if ( isNegative(p_value) || isGreaterThanOne(p_value) )
+		fprintf(stats[TEST_OVERLAPPING], "WARNING:  P_VALUE IS OUT OF RANGE.\n");
+
+	free(sequence);
+	fprintf(stats[TEST_OVERLAPPING], "%f %s\n\n", p_value, p_value < ALPHA ? "FAILURE" : "SUCCESS");
+	fprintf(results[TEST_OVERLAPPING], "%f\n", p_value);
+}
+
+double
+Pr(int u, double eta)
+{
+	int		l;
+	double	sum, p;
+	
+	if ( u == 0 )
+		p = exp(-eta);
+	else {
+		sum = 0.0;
+		for ( l=1; l<=u; l++ )
+			sum += exp(-eta-u*log(2)+l*log(eta)-cephes_lgam(l+1)+cephes_lgam(u)-cephes_lgam(l)-cephes_lgam(u-l+1));
+		p = sum;
+	}
+	return p;
+}