
// g++ -O3 -g0 -DNDEBUG  sparse_transpose.cpp -I.. -I/home/gael/Coding/LinearAlgebra/mtl4/ -DDENSITY=0.005 -DSIZE=10000
// && ./a.out
//  -DNOGMM -DNOMTL
//  -DCSPARSE -I /home/gael/Coding/LinearAlgebra/CSparse/Include/
//  /home/gael/Coding/LinearAlgebra/CSparse/Lib/libcsparse.a

#ifndef SIZE
#define SIZE 10000
#endif

#ifndef DENSITY
#define DENSITY 0.01
#endif

#ifndef REPEAT
#define REPEAT 1
#endif

#include "BenchSparseUtil.h"

#ifndef MINDENSITY
#define MINDENSITY 0.0004
#endif

#ifndef NBTRIES
#define NBTRIES 10
#endif

#define BENCH(X)                          \
  timer.reset();                          \
  for (int _j = 0; _j < NBTRIES; ++_j) {  \
    timer.start();                        \
    for (int _k = 0; _k < REPEAT; ++_k) { \
      X                                   \
    }                                     \
    timer.stop();                         \
  }

int main(int argc, char *argv[]) {
  int rows = SIZE;
  int cols = SIZE;
  float density = DENSITY;

  EigenSparseMatrix sm1(rows, cols), sm3(rows, cols);

  BenchTimer timer;
  for (float density = DENSITY; density >= MINDENSITY; density *= 0.5) {
    fillMatrix(density, rows, cols, sm1);

// dense matrices
#ifdef DENSEMATRIX
    {
      DenseMatrix m1(rows, cols), m3(rows, cols);
      eiToDense(sm1, m1);
      BENCH(for (int k = 0; k < REPEAT; ++k) m3 = m1.transpose();)
      std::cout << "  Eigen dense:\t" << timer.value() << endl;
    }
#endif

    std::cout << "Non zeros: " << sm1.nonZeros() / float(sm1.rows() * sm1.cols()) * 100 << "%\n";

    // eigen sparse matrices
    {
      BENCH(for (int k = 0; k < REPEAT; ++k) sm3 = sm1.transpose();)
      std::cout << "  Eigen:\t" << timer.value() << endl;
    }

// CSparse
#ifdef CSPARSE
    {
      cs *m1, *m3;
      eiToCSparse(sm1, m1);

      BENCH(for (int k = 0; k < REPEAT; ++k) {
        m3 = cs_transpose(m1, 1);
        cs_spfree(m3);
      })
      std::cout << "  CSparse:\t" << timer.value() << endl;
    }
#endif

// GMM++
#ifndef NOGMM
    {
      GmmDynSparse gmmT3(rows, cols);
      GmmSparse m1(rows, cols), m3(rows, cols);
      eiToGmm(sm1, m1);
      BENCH(for (int k = 0; k < REPEAT; ++k) gmm::copy(gmm::transposed(m1), m3);)
      std::cout << "  GMM:\t\t" << timer.value() << endl;
    }
#endif

// MTL4
#ifndef NOMTL
    {
      MtlSparse m1(rows, cols), m3(rows, cols);
      eiToMtl(sm1, m1);
      BENCH(for (int k = 0; k < REPEAT; ++k) m3 = trans(m1);)
      std::cout << "  MTL4:\t\t" << timer.value() << endl;
    }
#endif

    std::cout << "\n\n";
  }

  return 0;
}