!                Parallel Sparse BLAS   GPU plugin 
!      (C) Copyright 2013
!  
!                         Salvatore Filippone
!                         Alessandro Fanfarillo
!   
!    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. The name of the PSBLAS group or the names of its contributors may
!         not be used to endorse or promote products derived from this
!         software without specific written permission.
!   
!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
!    ``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 PSBLAS GROUP OR ITS CONTRIBUTORS
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!   
  

module diagdev_mod
  use iso_c_binding 
  use core_mod 

  type, bind(c) :: diagdev_parms
    integer(c_int) :: element_type
    integer(c_int) :: rows
    integer(c_int) :: columns
    integer(c_int) :: firstIndex
 end type diagdev_parms

  interface 
    function FgetDiagDeviceParams(rows, columns, elementType, firstIndex) &
         & result(res) bind(c,name='getDiagDeviceParams')
      use iso_c_binding
      import :: diagdev_parms
      type(diagdev_parms)    :: res
      integer(c_int), value :: rows,columns,elementType,firstIndex
    end function FgetDiagDeviceParams
  end interface
  

  interface 
    function FallocDiagDevice(deviceMat,rows,columns,&
         & elementType,firstIndex) &
         & result(res) bind(c,name='FallocDiagDevice')
      use iso_c_binding
      integer(c_int)        :: res
      integer(c_int), value :: rows,columns,elementType,firstIndex
      type(c_ptr)           :: deviceMat
    end function FallocDiagDevice
  end interface

  interface writeDiagDevice
 
    function writeDiagDeviceFloat(deviceMat,a,off,n) &
         & result(res) bind(c,name='writeDiagDeviceFloat')
      use iso_c_binding
      integer(c_int)      :: res
      type(c_ptr), value  :: deviceMat
      integer(c_int), value :: n
      real(c_float)       :: a(n,*)
      integer(c_int)      :: off(*)!,irn(*)
    end function writeDiagDeviceFloat

    function writeDiagDeviceDouble(deviceMat,a,off,n) &
         & result(res) bind(c,name='writeDiagDeviceDouble')
      use iso_c_binding
      integer(c_int)      :: res
      type(c_ptr), value  :: deviceMat
      integer(c_int),value :: n
      real(c_double)      :: a(n,*)
      integer(c_int)      :: off(*)
    end function writeDiagDeviceDouble

    function writeDiagDeviceFloatComplex(deviceMat,a,off,n) &
         & result(res) bind(c,name='writeDiagDeviceFloatComplex')
      use iso_c_binding
      integer(c_int)           :: res
      type(c_ptr), value       :: deviceMat
      integer(c_int), value    :: n
      complex(c_float_complex) :: a(n,*)
      integer(c_int)           :: off(*)!,irn(*)
    end function writeDiagDeviceFloatComplex

    function writeDiagDeviceDoubleComplex(deviceMat,a,off,n) &
         & result(res) bind(c,name='writeDiagDeviceDoubleComplex')
      use iso_c_binding
      integer(c_int)            :: res
      type(c_ptr), value        :: deviceMat
      integer(c_int), value     :: n
      complex(c_double_complex) :: a(n,*)
      integer(c_int)            :: off(*)!,irn(*)
    end function writeDiagDeviceDoubleComplex
    
  end interface

  interface readDiagDevice 

    function readDiagDeviceFloat(deviceMat,a,off,n) &
         & result(res) bind(c,name='readDiagDeviceFloat')
      use iso_c_binding
      integer(c_int)      :: res
      type(c_ptr), value  :: deviceMat
      real(c_float)       :: a(n,*)
      integer(c_int)      :: off(*)!,irn(*)
    end function readDiagDeviceFloat

    function readDiagDeviceDouble(deviceMat,a,off,n) &
         & result(res) bind(c,name='readDiagDeviceDouble')
      use iso_c_binding
      integer(c_int)      :: res
      type(c_ptr), value  :: deviceMat
      integer(c_int),value :: n
      real(c_double)      :: a(n,*)
      integer(c_int)      :: off(*)
    end function readDiagDeviceDouble

    function readDiagDeviceFloatComplex(deviceMat,a,off,n) &
         & result(res) bind(c,name='readDiagDeviceFloatComplex')
      use iso_c_binding
      integer(c_int)           :: res
      type(c_ptr), value       :: deviceMat
      integer(c_int), value    :: n
      complex(c_float_complex) :: a(n,*)
      integer(c_int)           :: off(*)!,irn(*)
    end function readDiagDeviceFloatComplex

    function readDiagDeviceDoubleComplex(deviceMat,a,off,n) &
         & result(res) bind(c,name='readDiagDeviceDoubleComplex')
      use iso_c_binding
      integer(c_int)           :: res
      type(c_ptr), value       :: deviceMat
      integer(c_int), value    :: n
      complex(c_double_complex) :: a(n,*)
      integer(c_int)           :: off(*)!,irn(*)
    end function readDiagDeviceDoubleComplex

  end interface

  interface 
    subroutine  freeDiagDevice(deviceMat) &
         & bind(c,name='freeDiagDevice')
      use iso_c_binding
      type(c_ptr), value  :: deviceMat
    end subroutine freeDiagDevice
  end interface

  interface 
    subroutine resetDiagTimer() bind(c,name='resetDiagTimer')
      use iso_c_binding
    end subroutine resetDiagTimer
  end interface
  interface 
    function  getDiagTimer() &
         & bind(c,name='getDiagTimer') result(res)
      use iso_c_binding
      real(c_double)      :: res
    end function getDiagTimer
  end interface

  interface 
    function  getDiagDevicePitch(deviceMat) &
         & bind(c,name='getDiagDevicePitch') result(res)
      use iso_c_binding
      type(c_ptr), value  :: deviceMat
      integer(c_int)      :: res
    end function getDiagDevicePitch
  end interface

  interface 
    function  getDiagDeviceMaxRowSize(deviceMat) &
         & bind(c,name='getDiagDeviceMaxRowSize') result(res)
      use iso_c_binding
      type(c_ptr), value  :: deviceMat
      integer(c_int)      :: res
    end function getDiagDeviceMaxRowSize
  end interface


  interface spmvDiagDevice
    function spmvDiagDeviceFloat(deviceMat,alpha,x,beta,y) &
         & result(res) bind(c,name='spmvDiagDeviceFloat')
      use iso_c_binding
      integer(c_int)		:: res
      type(c_ptr), value 	:: deviceMat, x, y
      real(c_float),value     	:: alpha, beta
    end function spmvDiagDeviceFloat
    function spmvDiagDeviceDouble(deviceMat,alpha,x,beta,y) &
         & result(res) bind(c,name='spmvDiagDeviceDouble')
      use iso_c_binding
      integer(c_int)		:: res
      type(c_ptr), value	:: deviceMat, x, y 
      real(c_double),value     	:: alpha,  beta
    end function spmvDiagDeviceDouble
    function spmvDiagDeviceFloatComplex(deviceMat,alpha,x,beta,y) &
         & result(res) bind(c,name='spmvDiagDeviceFloatComplex')
      use iso_c_binding
      integer(c_int)		     :: res
      type(c_ptr), value	     :: deviceMat, x, y 
      complex(c_float_complex),value :: alpha,  beta
    end function spmvDiagDeviceFloatComplex
    function spmvDiagDeviceDoubleComplex(deviceMat,alpha,x,beta,y) &
         & result(res) bind(c,name='spmvDiagDeviceDoubleComplex')
      use iso_c_binding
      integer(c_int)		      :: res
      type(c_ptr), value	      :: deviceMat, x, y 
      complex(c_double_complex),value :: alpha,  beta
    end function spmvDiagDeviceDoubleComplex
  end interface spmvDiagDevice
    
end module diagdev_mod