misc.cc

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/* -*-  Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
/*
 * Copyright (c) 1994 Regents of the University of California.
 * All rights reserved.
 *
 * 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 above 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 software developed by the Computer Systems
 *  Engineering Group at Lawrence Berkeley Laboratory.
 * 4. Neither the name of the University nor of the Laboratory may be used
 *    to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS 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.
 *
 * miscellaneous "ns" commands
 */

#ifndef lint
static const char rcsid[] =
    "@(#) $Header: /nfs/jade/vint/CVSROOT/ns-2/common/misc.cc,v 1.14 2002/06/04 23:25:19 haldar Exp $ (LBL)";
#endif

#include <stdlib.h>
#include <math.h>
#ifndef WIN32
#include <sys/time.h>
#endif
#include <ctype.h>
#include "config.h"
#include "scheduler.h"
#include "random.h"

#if defined(HAVE_INT64)
class Add64Command : public TclCommand {
public: 
    Add64Command() : TclCommand("ns-add64") {}
    virtual int command(int argc, const char*const* argv);
};

int Add64Command::command(int argc, const char*const* argv)
{
    Tcl& tcl = Tcl::instance();
    if (argc == 3) {
        char res[22]; /* A 64 bit int at most 20 digits */
        int64_t d1 = STRTOI64(argv[1], NULL, 0);
        int64_t d2 = STRTOI64(argv[2], NULL, 0);
        sprintf(res, STRTOI64_FMTSTR, d1+d2);
        tcl.resultf("%s", res);
        return (TCL_OK);
    }
    tcl.add_error("ns-add64 requires two arguments.");
    return (TCL_ERROR);
}

class Mult64Command : public TclCommand {
public: 
    Mult64Command() : TclCommand("ns-mult64") {}
    virtual int command(int argc, const char*const* argv);
};

int Mult64Command::command(int argc, const char*const* argv)
{
    Tcl& tcl = Tcl::instance();
    if (argc == 3) {
        char res[22]; /* A 64 bit int at most 20 digits */
        int64_t d1 = STRTOI64(argv[1], NULL, 0);
        int64_t d2 = STRTOI64(argv[2], NULL, 0);
        sprintf(res, STRTOI64_FMTSTR, d1*d2);
        tcl.resultf("%s", res);
        return (TCL_OK);
    }
    tcl.add_error("ns-mult64 requires two arguments.");
    return (TCL_ERROR);
}

class Int64ToDoubleCommand : public TclCommand {
public: 
    Int64ToDoubleCommand() : TclCommand("ns-int64todbl") {}
    virtual int command(int argc, const char*const* argv);
};

int Int64ToDoubleCommand::command(int argc, const char*const* argv)
{
    Tcl& tcl = Tcl::instance();
    if (argc == 2) {
        char res[22]; /* A 64 bit int at most 20 digits */
        int64_t d1 = STRTOI64(argv[1], NULL, 0);
        double  d2 = d1;
        sprintf(res, "%.1f",d2);
        tcl.resultf("%s", res);
        return (TCL_OK);
    }
    tcl.add_error("ns-int64todbl requires only one arguments.");
    return (TCL_ERROR);
}
#endif

class HasInt64Command : public TclCommand {
public: 
    HasInt64Command() : TclCommand("ns-hasint64") {}
    virtual int command(int argc, const char*const* argv);
};

int HasInt64Command::command(int argc, const char*const* argv)
{
    Tcl& tcl = Tcl::instance();
    char res[2];
    int flag = 0; 
#if defined(HAVE_INT64)
    flag = 1; 
    #endif
    sprintf(res, "%d", flag);
    tcl.resultf("%s", res);
    return (TCL_OK);
}

class RandomCommand : public TclCommand {
public:
    RandomCommand() : TclCommand("ns-random") { }
    virtual int command(int argc, const char*const* argv);
};

/*
 * ns-random
 * ns-random $seed 
 */
int RandomCommand::command(int argc, const char*const* argv)
{
    Tcl& tcl = Tcl::instance();
    if (argc == 1) {
        sprintf(tcl.buffer(), "%u", Random::random());
        tcl.result(tcl.buffer());
    } else if (argc == 2) {
        int seed = atoi(argv[1]);
        if (seed == 0)
            seed = Random::seed_heuristically();
        else
            Random::seed(seed);
        tcl.resultf("%d", seed);
    }
    return (TCL_OK);
}

extern "C" char version_string[];

class VersionCommand : public TclCommand {
public:
    VersionCommand() : TclCommand("ns-version") { }
    virtual int command(int, const char*const*) {
        Tcl::instance().result(version_string);
        return (TCL_OK);
    }
};

class HasSTLCommand : public TclCommand {
public:
    HasSTLCommand() : TclCommand("ns-hasSTL") {}
    virtual int command(int argc, const char*const* argv);
};

int HasSTLCommand::command(int argc, const char*const* argv) 
{
    Tcl& tcl = Tcl::instance();
    char res[2];
    int flag = 0;
        #if defined(HAVE_STL)
    flag = 1;
        #endif
    sprintf(res, "%d", flag);
    tcl.resultf("%s", res);
    return (TCL_OK);
}



class TimeAtofCommand : public TclCommand {
public:
    TimeAtofCommand() : TclCommand("time_atof") { }
    virtual int command(int argc, const char*const* argv) {
        if (argc != 2)
            return (TCL_ERROR);
        char* s = (char*) argv[1];
        char wrk[32];
        char* cp = wrk;
        while (isdigit(*s) || *s == 'e' ||
               *s == '+' || *s == '-' || *s == '.')
            *cp++ = *s++;
        *cp = 0;
        double v = atof(wrk);
        switch (*s) {
        case 'm':
            v *= 1e-3;
            break;
        case 'u':
            v *= 1e-6;
            break;
        case 'n':
            v *= 1e-9;
            break;
        case 'p':
            v *= 1e-12;
            break;
        }
        Tcl::instance().resultf("%g", v);
        return (TCL_OK);
    }
};

void init_misc(void)
{
    (void)new VersionCommand;
    (void)new RandomCommand;
    (void)new TimeAtofCommand;
    (void)new HasInt64Command;
    (void)new HasSTLCommand;
#if defined(HAVE_INT64)
    (void)new Add64Command;
    (void)new Mult64Command;
    (void)new Int64ToDoubleCommand;
#endif
}

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