readtensor.cpp

#include "readtensor.h"
#include <stdio.h>
#include <iostream>
#include <fstream>
#include <sstream>
#include <stdlib.h>

using std::ifstream;
using std::istringstream;
using std::endl;
using std::cout;
using std::string;

/**
 * @param
 * @param
 * @param
 * @param
 * @return
 */
int precess(int &dim_i, int &dim_j, int &dim_k, char *file) {
  ifstream in_stream(file);
  string line;
  int total_nnz = 0;
  int i, j, k;
  float value;
  while (getline(in_stream, line)) {
    istringstream liness(line);
    liness >> i >> j >> k >> value;
    dim_i = i > dim_i ? i : dim_i;
    dim_j = j > dim_j ? j : dim_j;
    dim_k = k > dim_k ? k : dim_k;
    total_nnz++;
  }

  return total_nnz;
}


void tensor_malloc(tensor *data, int nnz) {
  *data = (tensor)malloc(sizeof(item) * nnz);
}

void tensor_free(tensor data) {
  free(data);
}

int readtensor(tensor data, char *file) {
  ifstream in_stream(file);
  string line;
  int index = 0;
  // int i,j,k;
  cout << "in readtensor" << endl;
  while (getline(in_stream, line)) {
    // cout<<"in readtensor"<<endl;
    istringstream liness(line);
    liness >> data[index].coord[0] >> data[index].coord[1] >> data[index].coord[2] >> data[index].val;
    // cout<<"in readtensor2"<<endl;
    index++;

    if (index % 1000000 == 0) {
      cout << "Total lines read: " << index << endl;
    }
  }

  return index;
}