/* Copyright (C) The Scalable Software Infrastructure Project. 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. Neither the name of the project nor the names of its contributors 
      may be used to endorse or promote products derived from this software 
      without specific prior written permission.

   THIS SOFTWARE IS PROVIDED BY THE SCALABLE SOFTWARE INFRASTRUCTURE PROJECT
   ``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 SCALABLE SOFTWARE INFRASTRUCTURE
   PROJECT 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.
*/

#ifdef HAVE_CONFIG_H
  #include "lis_config.h"
#else
#ifdef HAVE_CONFIG_WIN_H
  #include "lis_config_win.h"
#endif
#endif

#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_MALLOC_H
        #include <malloc.h>
#endif
#include <string.h>
#include <stdarg.h>
#ifdef _OPENMP
  #include <omp.h>
#endif
#ifdef USE_MPI
  #include <mpi.h>
#endif
#include "lislib.h"

/************************************************
 * lis_output_mm_vec
 * lis_output_mm_header
 * lis_output_mm_csr
 * lis_output_mm_csc
 ************************************************/

#undef __FUNC__
#define __FUNC__ "lis_output_mm_vec"
#ifdef USE_MPI
LIS_INT lis_output_mm_vec(LIS_MATRIX A, LIS_VECTOR b, LIS_VECTOR x, LIS_INT format, char *path)
{
  LIS_INT        n,local_nnz,nnz,nprocs,my_rank;
  LIS_INT        i,j,jj,is;
  LIS_INT        pe;
  LIS_INT        err,ret;
  FILE      *file;
  LIS_MM_VECFMT  fmt;

  LIS_DEBUG_FUNC_IN;


  nprocs    = A->nprocs;
  my_rank   = A->my_rank;
  local_nnz = A->nnz;
  n         = A->n;
  is        = A->is;

  if( !lis_vector_is_null(b) )
  {
    err = 0;
    for(pe=0;pe<nprocs;pe++)
    {
      if( my_rank==pe )
      {
        if( format==LIS_FMT_MM )
        {
          file = fopen(path, "a");
        }
        else
        {
          file = fopen(path, "ab");
        }
        if( file==NULL )
        {
          LIS_SETERR1(LIS_ERR_FILE_IO,"cannot open file %s\n", path);
          err = 1;
        }
        else
        {
          if( format==LIS_FMT_MM )
          {
            for(i=0;i<n;i++)
            {
#ifdef _LONGLONG
#ifdef _LONG__DOUBLE
              fprintf(file, "%lld %28.20Le\n", is+i+1,b->value[i]);
#else
              fprintf(file, "%lld %28.20e\n", is+i+1,b->value[i]);
#endif
#else
#ifdef _LONG__DOUBLE
              fprintf(file, "%d %28.20Le\n", is+i+1,b->value[i]);
#else
              fprintf(file, "%d %28.20e\n", is+i+1,b->value[i]);
#endif
#endif
            }
          }
          else
          {
            for(i=0;i<n;i++)
            {
              fmt.i     = is+i+1;
              fmt.value = b->value[i];
              fwrite(&fmt,sizeof(fmt),1,file);
            }
          }
          fclose(file);
        }
      }
      MPI_Allreduce(&err,&ret,1,LIS_MPI_INT,MPI_SUM,A->comm);
      if( ret )
      {
        return LIS_ERR_FILE_IO;
      }
    }
  }
  if( !lis_vector_is_null(x) )
  {
    err = 0;
    for(pe=0;pe<nprocs;pe++)
    {
      if( my_rank==pe )
      {
        if( format==LIS_FMT_MM )
        {
          file = fopen(path, "a");
        }
        else
        {
          file = fopen(path, "ab");
        }
        if( file==NULL )
        {
          LIS_SETERR1(LIS_ERR_FILE_IO,"cannot open file %s\n", path);
          err = 1;
        }
        else
        {
          if( format==LIS_FMT_MM )
          {
            for(i=0;i<n;i++)
            {
#ifdef _LONGLONG
#ifdef _LONG__DOUBLE
              fprintf(file, "%lld %28.20Le\n", is+i+1,x->value[i]);
#else
              fprintf(file, "%lld %28.20e\n", is+i+1,x->value[i]);
#endif
#else
#ifdef _LONG__DOUBLE
              fprintf(file, "%d %28.20Le\n", is+i+1,x->value[i]);
#else
              fprintf(file, "%d %28.20e\n", is+i+1,x->value[i]);
#endif
#endif
            }
          }
          else
          {
            for(i=0;i<n;i++)
            {
              fmt.i     = is+i+1;
              fmt.value = x->value[i];
              fwrite(&fmt,sizeof(fmt),1,file);
            }
          }
          fclose(file);
        }
      }
      MPI_Allreduce(&err,&ret,1,LIS_MPI_INT,MPI_SUM,A->comm);
      if( ret )
      {
        return LIS_ERR_FILE_IO;
      }
    }
  }

  LIS_DEBUG_FUNC_OUT;
  return LIS_SUCCESS;
}
#else
LIS_INT lis_output_mm_vec(LIS_MATRIX A, LIS_VECTOR b, LIS_VECTOR x, LIS_INT format, FILE *file)
{
  LIS_INT        n;
  LIS_INT        i;
  LIS_MM_VECFMT  fmt;

  LIS_DEBUG_FUNC_IN;

  n   = A->n;
  
  if( !lis_vector_is_null(b) )
  {
    if( format==LIS_FMT_MM )
    {
      for(i=0;i<n;i++)
      {
#ifdef _LONGLONG
#ifdef _LONG__DOUBLE
        fprintf(file, "%lld %28.20Le\n", i+1,b->value[i]);
#else
        fprintf(file, "%lld %28.20e\n", i+1,b->value[i]);
#endif
#else
#ifdef _LONG__DOUBLE
        fprintf(file, "%d %28.20Le\n", i+1,b->value[i]);
#else
        fprintf(file, "%d %28.20e\n", i+1,b->value[i]);
#endif
#endif
      }
    }
    else
    {
      for(i=0;i<n;i++)
      {
        fmt.i     = i+1;
        fmt.value = b->value[i];
        fwrite(&fmt,sizeof(fmt),1,file);
      }
    }
  }
  if( !lis_vector_is_null(x) )
  {
    if( format==LIS_FMT_MM )
    {
      for(i=0;i<n;i++)
      {
#ifdef _LONGLONG
#ifdef _LONG__DOUBLE
        fprintf(file, "%lld %28.20Le\n", i+1,x->value[i]);
#else
        fprintf(file, "%lld %28.20e\n", i+1,x->value[i]);
#endif
#else
#ifdef _LONG__DOUBLE
        fprintf(file, "%d %28.20Le\n", i+1,b->value[i]);
#else
        fprintf(file, "%d %28.20e\n", i+1,b->value[i]);
#endif
#endif
      }
    }
    else
    {
      for(i=0;i<n;i++)
      {
        fmt.i     = i+1;
        fmt.value = x->value[i];
        fwrite(&fmt,sizeof(fmt),1,file);
      }
    }
  }
  LIS_DEBUG_FUNC_OUT;
  return LIS_SUCCESS;
}
#endif

#undef __FUNC__
#define __FUNC__ "lis_output_mm_header"
#ifdef USE_MPI
LIS_INT lis_output_mm_header(LIS_MATRIX A, LIS_VECTOR b, LIS_VECTOR x, LIS_INT format, char *path, FILE **file)
{
  LIS_INT        n,local_nnz,nnz,nprocs,my_rank;
  LIS_INT        err,ret;
  LIS_INT        isb,isx,endian;

  LIS_DEBUG_FUNC_IN;

  nprocs    = A->nprocs;
  my_rank   = A->my_rank;
  local_nnz = A->nnz;
  isb = 0;
  isx = 0;
  if( !lis_vector_is_null(b) ) isb = 1;
  if( !lis_vector_is_null(x) ) isx = 1;
  endian = 1;
  endian = *(char *)&endian;

  err       = 0;
  MPI_Allreduce(&local_nnz,&nnz,1,LIS_MPI_INT,MPI_SUM,A->comm);
  if( my_rank==0 )
  {
    if( format==LIS_FMT_MM )
    {
      *file = fopen(path, "w");
    }
    else
    {
      *file = fopen(path, "wb");
    }
    if( file==NULL )
    {
      LIS_SETERR1(LIS_ERR_FILE_IO,"cannot open file %s\n",path);
      err = 1;
    }
    else
    {
      fprintf(*file, "%%%%MatrixMarket matrix coordinate real general\n");

      if( format==LIS_FMT_MM )
      {
        if( isb==0 && isx==0 )
        {
#ifdef _LONGLONG
          fprintf(*file, "%lld %lld %lld\n", A->gn, A->gn, nnz);
#else
          fprintf(*file, "%d %d %d\n", A->gn, A->gn, nnz);
#endif
        }
        else
        {
#ifdef _LONGLONG
          fprintf(*file, "%lld %lld %lld %lld %lld\n", A->gn, A->gn, nnz, isb, isx);
#else
          fprintf(*file, "%d %d %d %d %d\n", A->gn, A->gn, nnz, isb, isx);
#endif
        }
      }
      else
      {
#ifdef _LONGLONG
        fprintf(*file, "%lld %lld %lld %lld %lld %lld\n", A->gn, A->gn, nnz, isb, isx, endian+1);
#else
        fprintf(*file, "%d %d %d %d %d %d\n", A->gn, A->gn, nnz, isb, isx, endian+1);
#endif
      }
      fclose(*file);
    }
  }
  MPI_Allreduce(&err,&ret,1,LIS_MPI_INT,MPI_SUM,A->comm);
  if( ret )
  {
    return LIS_ERR_FILE_IO;
  }

  LIS_DEBUG_FUNC_OUT;
  return LIS_SUCCESS;
}
#else
LIS_INT lis_output_mm_header(LIS_MATRIX A, LIS_VECTOR b, LIS_VECTOR x, LIS_INT format, char *path, FILE **file)
{
  LIS_INT        nnz;
  LIS_INT        isb,isx,endian;

  LIS_DEBUG_FUNC_IN;

  nnz = A->nnz;
  isb = 0;
  isx = 0;
  if( !lis_vector_is_null(b) ) isb = 1;
  if( !lis_vector_is_null(x) ) isx = 1;
  endian = 1;
  endian = *(char *)&endian;

  if( format==LIS_FMT_MM )
  {
    *file = fopen(path, "w");
  }
  else
  {
    *file = fopen(path, "wb");
  }
  if( file==NULL )
  {
    LIS_SETERR1(LIS_ERR_FILE_IO,"cannot open file %s\n",path);
    return LIS_ERR_FILE_IO;
  }
  fprintf(*file, "%%%%MatrixMarket matrix coordinate real general\n");

  if( format==LIS_FMT_MM )
  {
    if( isb==0 && isx==0 )
    {
#ifdef _LONGLONG
      fprintf(*file, "%lld %lld %lld\n", A->gn, A->gn, nnz);
#else
      fprintf(*file, "%d %d %d\n", A->gn, A->gn, nnz);
#endif
    }
    else
    {
#ifdef _LONGLONG
      fprintf(*file, "%lld %lld %lld %lld %lld\n", A->gn, A->gn, nnz, isb, isx);
#else
      fprintf(*file, "%d %d %d %d %d\n", A->gn, A->gn, nnz, isb, isx);
#endif
    }
  }
  else
  {
#ifdef _LONGLONG
    fprintf(*file, "%lld %lld %lld %lld %lld %lld\n", A->gn, A->gn, nnz, isb, isx, endian+1);
#else
    fprintf(*file, "%d %d %d %d %d %d\n", A->gn, A->gn, nnz, isb, isx, endian+1);
#endif
  }

  LIS_DEBUG_FUNC_OUT;
  return LIS_SUCCESS;
}
#endif

#undef __FUNC__
#define __FUNC__ "lis_output_mm_csr"
#ifdef USE_MPI
LIS_INT lis_output_mm_csr(LIS_MATRIX A, LIS_VECTOR b, LIS_VECTOR x, LIS_INT format, char *path)
{
  LIS_INT        n,local_nnz,nnz,nprocs,my_rank;
  LIS_INT        i,j,jj,is;
  LIS_INT        pe;
  LIS_INT        err,ret;
  LIS_INT        isb,isx;
  FILE      *file;
  LIS_MM_MATFMT  fmt;

  LIS_DEBUG_FUNC_IN;

  nprocs    = A->nprocs;
  my_rank   = A->my_rank;
  local_nnz = A->nnz;
  n         = A->n;
  is        = A->is;

  err = lis_output_mm_header(A,b,x,format,path,&file);
  if( err ) return err;


  for(pe=0;pe<nprocs;pe++)
  {
    if( my_rank==pe )
    {
      file = fopen(path, "a");
      if( file==NULL )
      {
        LIS_SETERR1(LIS_ERR_FILE_IO,"cannot open file %s\n", path);
        return LIS_FAILS;
      }
      if( A->matrix_type==LIS_MATRIX_CSR )
      {
        if( format==LIS_FMT_MM )
        {
          for(i=0;i<n;i++)
          {
            for(j=A->ptr[i];j<A->ptr[i+1];j++)
            {
              if( A->index[j]>=n )
              {
                jj = A->l2g_map[A->index[j]-n]+1;
              }
              else
              {
                jj = is + A->index[j]+1;
              }
#ifdef _LONGLONG
#ifdef _LONG__DOUBLE
              fprintf(file, "%lld %lld %28.20Le\n", is+i+1,jj,A->value[j]);
#else
              fprintf(file, "%lld %lld %28.20e\n", is+i+1,jj,A->value[j]);
#endif
#else
#ifdef _LONG__DOUBLE
              fprintf(file, "%d %d %28.20Le\n", is+i+1,jj,A->value[j]);
#else
              fprintf(file, "%d %d %28.20e\n", is+i+1,jj,A->value[j]);
#endif
#endif
            }
          }
        }
        else
        {
          for(i=0;i<n;i++)
          {
            for(j=A->ptr[i];j<A->ptr[i+1];j++)
            {
              if( A->index[j]>=n )
              {
                jj = A->l2g_map[A->index[j]-n]+1;
              }
              else
              {
                jj = is + A->index[j]+1;
              }
              fmt.i     = is+i+1;
              fmt.j     = jj;
              fmt.value = A->value[j];
              fwrite(&fmt,sizeof(fmt),1,file);
            }
          }
        }
      }
      else
      {
        if( format==LIS_FMT_MM )
        {
          for(i=0;i<n;i++)
          {
            for(j=A->ptr[i];j<A->ptr[i+1];j++)
            {
              if( A->index[j]>=n )
              {
                jj = A->l2g_map[A->index[j]-n]+1;
              }
              else
              {
                jj = is + A->index[j]+1;
              }
#ifdef _LONGLONG
#ifdef _LONG__DOUBLE
              fprintf(file, "%lld %lld %28.20Le\n", jj,is+i+1,A->value[j]);
#else
              fprintf(file, "%lld %lld %28.20e\n", jj,is+i+1,A->value[j]);
#endif
#else
#ifdef _LONG__DOUBLE
              fprintf(file, "%d %d %28.20Le\n", jj,is+i+1,A->value[j]);
#else
              fprintf(file, "%d %d %28.20e\n", jj,is+i+1,A->value[j]);
#endif
#endif
            }
          }
        }
        else
        {
          for(i=0;i<n;i++)
          {
            for(j=A->ptr[i];j<A->ptr[i+1];j++)
            {
              if( A->index[j]>=n )
              {
                jj = A->l2g_map[A->index[j]-n]+1;
              }
              else
              {
                jj = is + A->index[j]+1;
              }
              fmt.j     = is+i+1;
              fmt.i     = jj;
              fmt.value = A->value[j];
              fwrite(&fmt,sizeof(fmt),1,file);
            }
          }
        }
      }
      fclose(file);
    }
    MPI_Barrier(A->comm);
  }
  err = lis_output_mm_vec(A,b,x,format,path);
  if( err ) return err;

  LIS_DEBUG_FUNC_OUT;
  return LIS_SUCCESS;
}
#else
LIS_INT lis_output_mm_csr(LIS_MATRIX A, LIS_VECTOR b, LIS_VECTOR x, LIS_INT format, char *path)
{
  LIS_INT        n,nnz;
  LIS_INT        i,j,jj;
  LIS_INT        err;
  FILE      *file;
  LIS_MM_MATFMT  fmt;

  LIS_DEBUG_FUNC_IN;

  n   = A->n;
  nnz = A->nnz;

  err = lis_output_mm_header(A,b,x,format,path,&file);
  if( err ) return err;

  if( A->matrix_type==LIS_MATRIX_CSR )
  {
    if( format==LIS_FMT_MM )
    {
      for(i=0;i<n;i++)
      {
        for(j=A->ptr[i];j<A->ptr[i+1];j++)
        {
          jj = A->index[j]+1;
#ifdef _LONGLONG
#ifdef _LONG__DOUBLE
          fprintf(file, "%lld %lld %28.20Le\n", i+1,jj,A->value[j]);
#else
          fprintf(file, "%lld %lld %28.20e\n", i+1,jj,A->value[j]);
#endif
#else
#ifdef _LONG__DOUBLE
          fprintf(file, "%d %d %28.20Le\n", i+1,jj,A->value[j]);
#else
          fprintf(file, "%d %d %28.20e\n", i+1,jj,A->value[j]);
#endif
#endif
        }
      }
    }
    else
    {
      for(i=0;i<n;i++)
      {
        for(j=A->ptr[i];j<A->ptr[i+1];j++)
        {
          jj = A->index[j]+1;
          fmt.i     = i+1;
          fmt.j     = jj;
          fmt.value = A->value[j];
          fwrite(&fmt,sizeof(fmt),1,file);
        }
      }
    }
  }
  else
  {
    if( format==LIS_FMT_MM )
    {
      for(i=0;i<n;i++)
      {
        for(j=A->ptr[i];j<A->ptr[i+1];j++)
        {
          jj = A->index[j]+1;
#ifdef _LONGLONG
#ifdef _LONG__DOUBLE
          fprintf(file, "%lld %lld %28.20Le\n", jj,i+1,A->value[j]);
#else
          fprintf(file, "%lld %lld %28.20e\n", jj,i+1,A->value[j]);
#endif
#else
#ifdef _LONG__DOUBLE
          fprintf(file, "%d %d %28.20Le\n", jj,i+1,A->value[j]);
#else
          fprintf(file, "%d %d %28.20e\n", jj,i+1,A->value[j]);
#endif
#endif
        }
      }
    }
    else
    {
      for(i=0;i<n;i++)
      {
        for(j=A->ptr[i];j<A->ptr[i+1];j++)
        {
          jj = A->index[j]+1;
          fmt.j     = i+1;
          fmt.i     = jj;
          fmt.value = A->value[j];
          fwrite(&fmt,sizeof(fmt),1,file);
        }
      }
    }
  }
  lis_output_mm_vec(A,b,x,format,file);
  fclose(file);
  
  LIS_DEBUG_FUNC_OUT;
  return LIS_SUCCESS;
}
#endif

#undef __FUNC__
#define __FUNC__ "lis_output_mm_csc"
LIS_INT lis_output_mm_csc(LIS_MATRIX A, LIS_VECTOR b, LIS_VECTOR x, LIS_INT format, char *path)
{
  LIS_INT        err;

  LIS_DEBUG_FUNC_IN;

  err = lis_output_mm_csr(A,b,x,format,path);

  LIS_DEBUG_FUNC_OUT;
  return err;

}

