cmpdif3.cpp

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/*
 * $Id$
 *
 * Author: David Fournier
 * Copyright (c) 2008-2012 Regents of the University of California
 */
#include <fvar.hpp>

#ifdef __TURBOC__
  #pragma hdrstop
  #include <iostream.h>
#endif

#ifdef __ZTC__
  #include <iostream.hpp>
#endif

#include <string.h>

#ifndef OPT_LIB
  #include <cassert>
  #include <climits>
  #define CHK_ID_STRING
#endif

extern ofstream clogf;

void report_gradstack_flag(void)
{
  verify_identifier_string("stack");
  // Back up the stream and read the number of bytes written in the
  // ``write function'' corresponding to this ``read function''
  int num_bytes;
  gradient_structure::get_fp()->fread(&num_bytes,sizeof(int));
  char str1[100];
  str1[0]='\0';
#ifndef OPT_LIB
  assert(num_bytes > 0);
#endif
  gradient_structure::get_fp()->fread(str1,(size_t)num_bytes);
  cout << "in report_gradstack_flag  " << str1 << endl;
}

#if defined(CHK_ID_STRING)

static void report_gradstack_flag2(void)
{
  verify_identifier_string("stack");
  // Back up the stream and read the number of bytes written in the
  // ``write function'' corresponding to this ``read function''
  int num_bytes;
  gradient_structure::get_fp()->fread(&num_bytes,sizeof(int));
  char str1[100];
  str1[0]='\0';
#ifndef OPT_LIB
  assert(num_bytes >= 0);
#endif
  gradient_structure::get_fp()->fread(str1, (size_t)num_bytes);
  int i,j;
  gradient_structure::get_fp()->fread(&j,sizeof(int));
  gradient_structure::get_fp()->fread(&i,sizeof(int));
  cout << "in report_gradstack_flag  " << str1 << endl;
}
#endif

void set_gradstack_flag(char* str)
{
#if defined(CHK_ID_STRING)
  //int wsize=sizeof(char);
#ifdef OPT_LIB
  int length=(int)strlen(str);
#else
  size_t _length = strlen(str);
  assert(_length <= INT_MAX);
  int length=(int)_length;
#endif
#ifndef OPT_LIB
  assert(length >= 0);
#endif
  gradient_structure::get_fp()->fwrite(str, (size_t)length);
  gradient_structure::get_fp()->fwrite(&length,sizeof(int));
  gradient_structure::GRAD_STACK1->
    set_gradient_stack(report_gradstack_flag);
  save_identifier_string("stack");
#endif
}

void set_gradstack_flag(char* _str,int i,int j)
{
#if defined(CHK_ID_STRING)
  adstring ads=_str;
  ads+=" ";
  ads+=str(i);
  ads+=" ";
  ads+=str(j);
  //int wsize=sizeof(char);
  char * str=(char*)(ads);
#ifdef OPT_LIB
  int length=(int)strlen(str);
#else
  size_t _length = strlen(str);
  assert(_length <= INT_MAX);
  int length=(int)_length;
#endif
  gradient_structure::get_fp()->fwrite(&i,sizeof(int));
  gradient_structure::get_fp()->fwrite(&j,sizeof(int));
#ifndef OPT_LIB
  assert(length >= 0);
#endif
  gradient_structure::get_fp()->fwrite(str, (size_t)length);
  gradient_structure::get_fp()->fwrite(&length,sizeof(int));
  gradient_structure::GRAD_STACK1->
    set_gradient_stack(report_gradstack_flag2);
  save_identifier_string("stack");
#endif
}

void verify_identifier_string(const char* str1)
{
#if defined(CHK_ID_STRING)
  // Back up the stream and read the number of bytes written in the
  // ``write function'' corresponding to this ``read function''
  size_t num_bytes=strlen(str1);
  char str[10];
  str[num_bytes]='\0';
  gradient_structure::get_fp()->fread(str,num_bytes);
  //clogf << "in verify_id_string " << str1 << endl;
  if(strcmp(str1,str))
  {
    cerr << "Error reading stack identifer for " << str1 << endl;
    ad_exit(1);
  }
#endif
}

adstring get_string_marker(void)
{
  adstring str1;
#if defined(CHK_ID_STRING)
  // Back up the stream and read the number of bytes written in the
  // ``write function'' corresponding to this ``read function''
  long int num_bytes=5;
  char str[10];
  str[num_bytes]='\0';
#ifndef OPT_LIB
  assert(num_bytes > 0);
#endif
  gradient_structure::get_fp()->fread(str,(size_t)num_bytes);
  //clogf << "in verify_id_string " << str1 << endl;
  str1=str;
#endif
 return str1;
}

void ivector::save_ivector_position(void) const
{
  // saves the size and address information for a ivector
  size_t wsize=sizeof(ivector_position);
  ivector_position tmp(*this);
  gradient_structure::get_fp()->fwrite(&tmp, wsize);
}

void dvar_vector::save_dvar_vector_position(void) const
{
  // saves the size and address information for a dvar_vector
  size_t wsize=sizeof(dvar_vector_position);
  dvar_vector_position tmp(*this);
  gradient_structure::get_fp()->fwrite(&tmp, wsize);
}

void save_ad_pointer(void * p)
{
  // saves the size and address information for a dvar_vector
  size_t wsize=sizeof(void *);
  gradient_structure::get_fp()->fwrite(&p, wsize);
}

void * restore_ad_pointer(void)
{
  void * p=0;
  // saves the size and address information for a dvar_vector
  size_t wsize=sizeof(void *);
  gradient_structure::get_fp()->fread(&p, wsize);
  return p;
}