--- a/kerneltest/e32utils/nistsecurerng/src/approximateentropy.cpp Wed Sep 15 13:42:27 2010 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,111 +0,0 @@
-/*
-* 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"
-
-/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
- A P P R O X I M A T E E N T R O P Y T E S T
- * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-
-void
-ApproximateEntropy(int m, int n)
-{
- int i, j, k, r, blockSize, seqLength, powLen, index;
- double sum, numOfBlocks, ApEn[2], apen, chi_squared, p_value;
- unsigned int *P;
-
- fprintf(stats[TEST_APEN], "\t\t\tAPPROXIMATE ENTROPY TEST\n");
- fprintf(stats[TEST_APEN], "\t\t--------------------------------------------\n");
- fprintf(stats[TEST_APEN], "\t\tCOMPUTATIONAL INFORMATION:\n");
- fprintf(stats[TEST_APEN], "\t\t--------------------------------------------\n");
- fprintf(stats[TEST_APEN], "\t\t(a) m (block length) = %d\n", m);
-
- seqLength = n;
- r = 0;
-
- for ( blockSize=m; blockSize<=m+1; blockSize++ ) {
- if ( blockSize == 0 ) {
- ApEn[0] = 0.00;
- r++;
- }
- else {
- numOfBlocks = (double)seqLength;
- powLen = (int)pow(2, blockSize+1)-1;
- if ( (P = (unsigned int*)calloc(powLen,sizeof(unsigned int)))== NULL ) {
- fprintf(stats[TEST_APEN], "ApEn: Insufficient memory available.\n");
- return;
- }
- for ( i=1; i<powLen-1; i++ )
- P[i] = 0;
- for ( i=0; i<numOfBlocks; i++ ) { /* COMPUTE FREQUENCY */
- k = 1;
- for ( j=0; j<blockSize; j++ ) {
- k <<= 1;
- if ( (int)epsilon[(i+j) % seqLength] == 1 )
- k++;
- }
- P[k-1]++;
- }
- /* DISPLAY FREQUENCY */
- sum = 0.0;
- index = (int)pow(2, blockSize)-1;
- for ( i=0; i<(int)pow(2, blockSize); i++ ) {
- if ( P[index] > 0 )
- sum += P[index]*log(P[index]/numOfBlocks);
- index++;
- }
- sum /= numOfBlocks;
- ApEn[r] = sum;
- r++;
- free(P);
- }
- }
- apen = ApEn[0] - ApEn[1];
-
- chi_squared = 2.0*seqLength*(log(2) - apen);
- p_value = cephes_igamc(pow(2, m-1), chi_squared/2.0);
-
- fprintf(stats[TEST_APEN], "\t\t(b) n (sequence length) = %d\n", seqLength);
- fprintf(stats[TEST_APEN], "\t\t(c) Chi^2 = %f\n", chi_squared);
- fprintf(stats[TEST_APEN], "\t\t(d) Phi(m) = %f\n", ApEn[0]);
- fprintf(stats[TEST_APEN], "\t\t(e) Phi(m+1) = %f\n", ApEn[1]);
- fprintf(stats[TEST_APEN], "\t\t(f) ApEn = %f\n", apen);
- fprintf(stats[TEST_APEN], "\t\t(g) Log(2) = %f\n", log(2.0));
- fprintf(stats[TEST_APEN], "\t\t--------------------------------------------\n");
-
- if ( m > (int)(log(seqLength)/log(2)-5) ) {
- fprintf(stats[TEST_APEN], "\t\tNote: The blockSize = %d exceeds recommended value of %d\n", m,
- MAX(1, (int)(log(seqLength)/log(2)-5)));
- fprintf(stats[TEST_APEN], "\t\tResults are inaccurate!\n");
- fprintf(stats[TEST_APEN], "\t\t--------------------------------------------\n");
- }
-
- fprintf(stats[TEST_APEN], "%s\t\tp_value = %f\n\n", p_value < ALPHA ? "FAILURE" : "SUCCESS", p_value);
- fprintf(results[TEST_APEN], "%f\n", p_value);
-}