+++ /dev/null
-/* -*-c-*-
- *
- * $Id: maurer.h,v 1.3 2004/04/08 01:36:15 mdw Exp $
- *
- * Maurer's universal statistical test
- *
- * (c) 2000 Straylight/Edgeware
- */
-
-/*----- Licensing notice --------------------------------------------------*
- *
- * This file is part of Catacomb.
- *
- * Catacomb is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Library General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * Catacomb is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with Catacomb; if not, write to the Free
- * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- */
-
-#ifndef CATACOMB_MAURER_H
-#define CATACOMB_MAURER_H
-
-#ifdef __cplusplus
- extern "C" {
-#endif
-
-/*----- Header files ------------------------------------------------------*/
-
-#include <mLib/bits.h>
-
-/*----- Data structures ---------------------------------------------------*/
-
-typedef struct maurer_ctx {
- unsigned l; /* Chunk size, in bits */
- uint32 a; /* Bitscanner accumulator */
- unsigned b; /* Number of bits in accumulator */
- unsigned long n; /* Number of chunks read so far */
- double x; /* Statistic value */
- unsigned long *t; /* Offset table */
-} maurer_ctx;
-
-/*----- Functions provided ------------------------------------------------*/
-
-/* --- @maurer_init@ --- *
- *
- * Arguments: @maurer_ctx *m@ = pointer to a context to initialize
- * @unsigned l@ = number of bits to take at a time
- *
- * Returns: Minimum recommended amount of data to test.
- *
- * Use: Initializes a Maurer testing context. Note that @l@ values
- * larger than 16 are not supported, and values less than 6 can
- * give bizarre results.
- */
-
-extern unsigned long maurer_init(maurer_ctx */*m*/, unsigned /*l*/);
-
-/* --- @maurer_test@ --- *
- *
- * Arguments: @maurer_ctx *m@ = pointer to a Maurer testing context
- * @const void *buf@ = pointer to a buffer of data
- * @size_t sz@ = size of the buffer
- *
- * Returns: ---
- *
- * Use: Scans a buffer of data and updates the testing context.
- */
-
-extern void maurer_test(maurer_ctx */*m*/,
- const void */*buf*/, size_t /*sz*/);
-
-/* --- @maurer_done@ --- *
- *
- * Arguments: @maurer_ctx *m@ = pointer to a Maurer testing context
- *
- * Returns: The statistic %$Z_u = (X_u - \mu)/\sigma$%, which should be
- * normally distributed with a mean of 0 and variance of 1.
- *
- * Use: Returns the result of Maurer's universal statistical test.
- * Also frees the memory allocated during initialization.
- *
- * If insufficient data was received, the value @HUGE_VAL@ is
- * returned.
- */
-
-extern double maurer_done(maurer_ctx */*m*/);
-
-/* --- @maurer@ --- *
- *
- * Arguments: @const octet *p@ = pointer to a buffer of data
- * @size_t sz@ = size of the buffer
- * @unsigned l@ = number of bits to take at a time
- *
- * Returns: The statistic %$Z_u$%.
- *
- * Use: Simple interface to Maurer's universal statistical test. For
- * large %$l$% you should use the more complicated restartable
- * interface.
- */
-
-extern double maurer(const octet */*p*/, size_t /*sz*/, unsigned /*l*/);
-
-/*----- That's all, folks -------------------------------------------------*/
-
-#ifdef __cplusplus
- }
-#endif
-
-#endif
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