tjtools.h

/***************************************************************************
                          tjtools.h  -  description
                             -------------------
    begin                : Thu Jul 13 2000
    copyright            : (C) 2000 by Thies Jochimsen
    email                : jochimse@cns.mpg.de
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/



// This is a collection of frequently used C-routines


#ifndef TJTOOLS_H
#define TJTOOLS_H

#include <tjutils/tjutils.h>

#ifndef PII
#define PII 3.14159265358979323846264338327950288
#endif

#ifndef ODIN_MAXCHAR
#define ODIN_MAXCHAR 4096
#endif

#ifdef HAVE_LONG_LONG
#define LONGEST_INT long long
#else
#define LONGEST_INT long
#endif


// functions of large file extension, define them here so
// these macros can re-used in other modules
#ifdef HAVE_STAT64
#define STAT stat64
#else
#ifdef HAVE_STAT 
#define STAT stat
#endif
#endif

#ifdef HAVE_OPEN64
#define OPEN open64
#else
#define OPEN open
#endif

#ifdef HAVE_FOPEN64
#define FOPEN fopen64
#else
#define FOPEN fopen
#endif

#ifdef HAVE_FSEEKO64
#define FSEEK fseeko64
#else
#ifdef HAVE_FSEEKO
#define FSEEK fseeko
#else
#define FSEEK fseek
#endif
#endif

#ifdef HAVE_FTELLO64
#define FTELL ftello64
#else
#ifdef HAVE_FTELLO
#define FTELL ftello
#else
#define FTELL ftell
#endif
#endif

#ifdef HAVE_MMAP64
#define MMAP mmap64
#else
#define MMAP mmap
#endif


enum fopenMode {readMode,overwriteMode,appendMode};


double norm(double x, double y);


double norm3(double x,double y,double z);



double maxof3(double f1, double f2, double f3);


#ifndef NO_FILEHANDLING


const char* modestring(fopenMode mode);


LONGEST_INT filesize(const char *filename);


const char* getpwd();


int chpwd(const char *dirname);


int createdir(const char *dirname);


bool checkdir(const char *dirname);


int movefile(const char *src, const char* dst);


int copyfile(const char *src, const char* dst);


int rmfile(const char *fname);


int chperm(const char *fname, int perm);



void* filemap(const STD_string& filename, LONGEST_INT nbytes, LONGEST_INT offset, bool readonly, int& fd);


void fileunmap(int fd, void* start, LONGEST_INT nbytes, LONGEST_INT offset);


STD_string tempfile();


int create_empty_file(const STD_string& filename, LONGEST_INT nbytes, fopenMode mode=overwriteMode);


#endif


const char* lasterr();


void sleep_ms(unsigned int ms);


double current_time_s();


double secureDivision(double numerator, double denominator);

inline double secureInv(double denominator) {return secureDivision(1.0, denominator); }



const char* secure_getenv(const char* variable_name);


bool little_endian_byte_order();

unsigned int numof_cores();

double sinc(double x);


#ifndef NO_CMDLINE

int getCommandlineOption(int argc, char *argv[], const char *option, char *returnvalue, int maxchar,bool modify=true);


int isCommandlineOption(int argc, char *argv[], const char *option,bool modify=true);


int getLastArgument(int argc, char *argv[], char *returnvalue, int maxchar,bool modify=true);


int hasHelpOption(int argc, char *argv[]);

const char* helpUsage();

#endif


#endif

---