/* unused */

/* crypto/bn/bnspeed.c */

/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)

 * All rights reserved.

 *

 * This package is an SSL implementation written

 * by Eric Young (eay@cryptsoft.com).

 * The implementation was written so as to conform with Netscapes SSL.

 * 

 * This library is free for commercial and non-commercial use as long as

 * the following conditions are aheared to.  The following conditions

 * apply to all code found in this distribution, be it the RC4, RSA,

 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation

 * included with this distribution is covered by the same copyright terms

 * except that the holder is Tim Hudson (tjh@cryptsoft.com).

 * 

 * Copyright remains Eric Young's, and as such any Copyright notices in

 * the code are not to be removed.

 * If this package is used in a product, Eric Young should be given attribution

 * as the author of the parts of the library used.

 * This can be in the form of a textual message at program startup or

 * in documentation (online or textual) provided with the package.

 * 

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *    "This product includes cryptographic software written by

 *     Eric Young (eay@cryptsoft.com)"

 *    The word 'cryptographic' can be left out if the rouines from the library

 *    being used are not cryptographic related :-).

 * 4. If you include any Windows specific code (or a derivative thereof) from 

 *    the apps directory (application code) you must include an acknowledgement:

 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"

 * 

 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 * 

 * The licence and distribution terms for any publically available version or

 * derivative of this code cannot be changed.  i.e. this code cannot simply be

 * copied and put under another distribution licence

 * [including the GNU Public Licence.]

 */

/* most of this code has been pilfered from my libdes speed.c program */

#define BASENUM	1000000

#undef PROG

#define PROG bnspeed_main

#include <stdio.h>

#include <stdlib.h>

#include <signal.h>

#include <string.h>

#include <openssl/crypto.h>

#include <openssl/err.h>

#if !defined(OPENSSL_SYS_MSDOS) && (!defined(OPENSSL_SYS_VMS) || defined(__DECC)) && !defined(OPENSSL_SYS_MACOSX)

#define TIMES

#endif

#ifndef _IRIX

#include <time.h>

#endif

#ifdef TIMES

#include <sys/types.h>

#include <sys/times.h>

#endif

/* Depending on the VMS version, the tms structure is perhaps defined.

   The __TMS macro will show if it was.  If it wasn't defined, we should

   undefine TIMES, since that tells the rest of the program how things

   should be handled.				-- Richard Levitte */

#if defined(OPENSSL_SYS_VMS_DECC) && !defined(__TMS)

#undef TIMES

#endif

#ifndef TIMES

#include <sys/timeb.h>

#endif

#if defined(sun) || defined(__ultrix)

#define _POSIX_SOURCE

#include <limits.h>

#include <sys/param.h>

#endif

#include <openssl/bn.h>

#include <openssl/x509.h>

/* The following if from times(3) man page.  It may need to be changed */

#ifndef HZ

# ifndef CLK_TCK

#  ifndef _BSD_CLK_TCK_ /* FreeBSD hack */

#   define HZ	100.0

#  else /* _BSD_CLK_TCK_ */

#   define HZ ((double)_BSD_CLK_TCK_)

#  endif

# else /* CLK_TCK */

#  define HZ ((double)CLK_TCK)

# endif

#endif

#undef BUFSIZE

#define BUFSIZE	((long)1024*8)

int run=0;

static double Time_F(int s);

#define START	0

#define STOP	1

static double Time_F(int s)

	{

	double ret;

#ifdef TIMES

	static struct tms tstart,tend;

	if (s == START)

		{

		times(&tstart);

		return(0);

		}

	else

		{

		times(&tend);

		ret=((double)(tend.tms_utime-tstart.tms_utime))/HZ;

		return((ret < 1e-3)?1e-3:ret);

		}

#else /* !times() */

	static struct timeb tstart,tend;

	long i;

	if (s == START)

		{

		ftime(&tstart);

		return(0);

		}

	else

		{

		ftime(&tend);

		i=(long)tend.millitm-(long)tstart.millitm;

		ret=((double)(tend.time-tstart.time))+((double)i)/1000.0;

		return((ret < 0.001)?0.001:ret);

		}

#endif

	}

#define NUM_SIZES	5

static int sizes[NUM_SIZES]={128,256,512,1024,2048};

/*static int sizes[NUM_SIZES]={59,179,299,419,539}; */

void do_mul(BIGNUM *r,BIGNUM *a,BIGNUM *b,BN_CTX *ctx); 

int main(int argc, char **argv)

	{

	BN_CTX *ctx;

	BIGNUM a,b,c;

	ctx=BN_CTX_new();

	BN_init(&a);

	BN_init(&b);

	BN_init(&c);

	do_mul(&a,&b,&c,ctx);

	}

void do_mul(BIGNUM *r, BIGNUM *a, BIGNUM *b, BN_CTX *ctx)

	{

	int i,j,k;

	double tm;

	long num;

	for (i=0; i<NUM_SIZES; i++)

		{

		num=BASENUM;

		if (i) num/=(i*3);

		BN_rand(a,sizes[i],1,0);

		for (j=i; j<NUM_SIZES; j++)

			{

			BN_rand(b,sizes[j],1,0);

			Time_F(START);

			for (k=0; k<num; k++)

				BN_mul(r,b,a,ctx);

			tm=Time_F(STOP);

			printf("mul %4d x %4d -> %8.3fms\n",sizes[i],sizes[j],tm*1000.0/num);

			}

		}

	for (i=0; i<NUM_SIZES; i++)

		{

		num=BASENUM;

		if (i) num/=(i*3);

		BN_rand(a,sizes[i],1,0);

		Time_F(START);

		for (k=0; k<num; k++)

			BN_sqr(r,a,ctx);

		tm=Time_F(STOP);

		printf("sqr %4d x %4d -> %8.3fms\n",sizes[i],sizes[i],tm*1000.0/num);

		}

	for (i=0; i<NUM_SIZES; i++)

		{

		num=BASENUM/10;

		if (i) num/=(i*3);

		BN_rand(a,sizes[i]-1,1,0);

		for (j=i; j<NUM_SIZES; j++)

			{

			BN_rand(b,sizes[j],1,0);

			Time_F(START);

			for (k=0; k<100000; k++)

				BN_div(r, NULL, b, a,ctx);

			tm=Time_F(STOP);

			printf("div %4d / %4d -> %8.3fms\n",sizes[j],sizes[i]-1,tm*1000.0/num);

			}

		}

	}