--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kerneltest/e32utils/nistsecurerng/src/cusum.cpp	Tue Aug 31 16:34:26 2010 +0300
@@ -0,0 +1,109 @@
+/*
+* 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/cephes.h"
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+		    C U M U L A T I V E  S U M S  T E S T
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+void
+CumulativeSums(int n)
+{
+	int	   S, sup, inf;
+	int    z = 0;
+	int    zrev = 0;
+	int    k;
+	double	sum1, sum2, p_value;
+
+	S = 0;
+	sup = 0;
+	inf = 0;
+	for ( k=0; k<n; k++ ) {
+		epsilon[k] ? S++ : S--;
+		if ( S > sup )
+			sup++;
+		if ( S < inf )
+			inf--;
+		z = (sup > -inf) ? sup : -inf;
+		zrev = (sup-S > S-inf) ? sup-S : S-inf;
+	}
+	
+	// forward
+	sum1 = 0.0;
+	for ( k=(-n/z+1)/4; k<=(n/z-1)/4; k++ ) {
+		sum1 += cephes_normal(((4*k+1)*z)/sqrt(n));
+		sum1 -= cephes_normal(((4*k-1)*z)/sqrt(n));
+	}
+	sum2 = 0.0;
+	for ( k=(-n/z-3)/4; k<=(n/z-1)/4; k++ ) {
+		sum2 += cephes_normal(((4*k+3)*z)/sqrt(n));
+		sum2 -= cephes_normal(((4*k+1)*z)/sqrt(n));
+	}
+
+	p_value = 1.0 - sum1 + sum2;
+	
+	fprintf(stats[TEST_CUSUM], "\t\t      CUMULATIVE SUMS (FORWARD) TEST\n");
+	fprintf(stats[TEST_CUSUM], "\t\t-------------------------------------------\n");
+	fprintf(stats[TEST_CUSUM], "\t\tCOMPUTATIONAL INFORMATION:\n");
+	fprintf(stats[TEST_CUSUM], "\t\t-------------------------------------------\n");
+	fprintf(stats[TEST_CUSUM], "\t\t(a) The maximum partial sum = %d\n", z);
+	fprintf(stats[TEST_CUSUM], "\t\t-------------------------------------------\n");
+
+	if ( isNegative(p_value) || isGreaterThanOne(p_value) )
+		fprintf(stats[TEST_CUSUM], "\t\tWARNING:  P_VALUE IS OUT OF RANGE\n");
+
+	fprintf(stats[TEST_CUSUM], "%s\t\tp_value = %f\n\n", p_value < ALPHA ? "FAILURE" : "SUCCESS", p_value);
+	fprintf(results[TEST_CUSUM], "%f\n", p_value);
+		
+	// backwards
+	sum1 = 0.0;
+	for ( k=(-n/zrev+1)/4; k<=(n/zrev-1)/4; k++ ) {
+		sum1 += cephes_normal(((4*k+1)*zrev)/sqrt(n));
+		sum1 -= cephes_normal(((4*k-1)*zrev)/sqrt(n));
+	}
+	sum2 = 0.0;
+	for ( k=(-n/zrev-3)/4; k<=(n/zrev-1)/4; k++ ) {
+		sum2 += cephes_normal(((4*k+3)*zrev)/sqrt(n));
+		sum2 -= cephes_normal(((4*k+1)*zrev)/sqrt(n));
+	}
+	p_value = 1.0 - sum1 + sum2;
+
+	fprintf(stats[TEST_CUSUM], "\t\t      CUMULATIVE SUMS (REVERSE) TEST\n");
+	fprintf(stats[TEST_CUSUM], "\t\t-------------------------------------------\n");
+	fprintf(stats[TEST_CUSUM], "\t\tCOMPUTATIONAL INFORMATION:\n");
+	fprintf(stats[TEST_CUSUM], "\t\t-------------------------------------------\n");
+	fprintf(stats[TEST_CUSUM], "\t\t(a) The maximum partial sum = %d\n", zrev);
+	fprintf(stats[TEST_CUSUM], "\t\t-------------------------------------------\n");
+
+	if ( isNegative(p_value) || isGreaterThanOne(p_value) )
+		fprintf(stats[TEST_CUSUM], "\t\tWARNING:  P_VALUE IS OUT OF RANGE\n");
+
+	fprintf(stats[TEST_CUSUM], "%s\t\tp_value = %f\n\n", p_value < ALPHA ? "FAILURE" : "SUCCESS", p_value);
+	fprintf(results[TEST_CUSUM], "%f\n", p_value);
+}