/*

   BLIS    
   An object-based framework for developing high-performance BLAS-like
   libraries.

   Copyright (C) 2014, The University of Texas

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions are
   met:
    - Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    - 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.
    - Neither the name of The University of Texas 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 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 COPYRIGHT
   HOLDER OR CONTRIBUTORS 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.

*/

#include <unistd.h>
#include "blis.h"

void zgemm3m_( f77_char*, f77_char*, f77_int*, f77_int*, f77_int*, dcomplex*, dcomplex*, f77_int*, dcomplex*, f77_int*, dcomplex*, dcomplex*, f77_int* );


//#define PRINT

int main( int argc, char** argv )
{
	obj_t    a, b, c;
	obj_t    c_save;
	obj_t    alpha, beta;
	dim_t    m, n, k;
	dim_t    p;
	dim_t    p_begin, p_end, p_inc;
	int      m_input, n_input, k_input;
	num_t    dt;
	char     dt_ch;
	int      r, n_repeats;
	trans_t  transa;
	trans_t  transb;
	f77_char f77_transa;
	f77_char f77_transb;

	double   dtime;
	double   dtime_save;
	double   gflops;


	bli_init();

	//bli_error_checking_level_set( BLIS_NO_ERROR_CHECKING );

	n_repeats = 3;

	dt      = DT;

	p_begin = P_BEGIN;
	p_end   = P_END;
	p_inc   = P_INC;

	m_input = -1;
	n_input = -1;
	k_input = -1;

#if 0
	num_t  dt_real = bli_datatype_proj_to_real( DT );
	cntx_t cntx;

	bli_gemm_cntx_init( &cntx );

	// Extract the kc blocksize for the requested datatype and its
	// real analogue.
	dim_t kc      = bli_cntx_get_blksz_def_dt( dt,      BLIS_KC, &cntx );
	dim_t kc_real = bli_cntx_get_blksz_def_dt( dt_real, BLIS_KC, &cntx );

	// Assign the k dimension depending on which implementation is
	// being tested. Note that the BLIS_NAT case handles the real
	// domain cases as well as native complex.
	if      ( IND == BLIS_NAT  ) k_input = kc;
	else if ( IND == BLIS_3M1  ) k_input = kc_real / 3;
	else if ( IND == BLIS_4M1A ) k_input = kc_real / 2;
	else                         k_input = kc_real;
#endif

	// Choose the char corresponding to the requested datatype.
	if      ( bli_is_float( dt ) )    dt_ch = 's';
	else if ( bli_is_double( dt ) )   dt_ch = 'd';
	else if ( bli_is_scomplex( dt ) ) dt_ch = 'c';
	else                              dt_ch = 'z';

	transa = BLIS_NO_TRANSPOSE;
	transb = BLIS_NO_TRANSPOSE;

	bli_param_map_blis_to_netlib_trans( transa, &f77_transa );
	bli_param_map_blis_to_netlib_trans( transb, &f77_transb );

	// Begin with initializing the last entry to zero so that
	// matlab allocates space for the entire array once up-front.
	for ( p = p_begin; p + p_inc <= p_end; p += p_inc ) ;
#ifdef BLIS
	printf( "data_%s_%cgemm_%s_blis", THR_STR, dt_ch, STR );
#else
	printf( "data_%s_%cgemm_%s",      THR_STR, dt_ch, STR );
#endif
	printf( "( %2lu, 1:5 ) = [ %4lu %4lu %4lu  %10.3e  %6.3f ];\n",
	        ( unsigned long )(p - p_begin + 1)/p_inc + 1,
	        ( unsigned long )0,
	        ( unsigned long )0,
	        ( unsigned long )0, 0.0, 0.0 );


	for ( p = p_begin; p <= p_end; p += p_inc )
	{

		if ( m_input < 0 ) m = p / ( dim_t )abs(m_input);
		else               m =     ( dim_t )    m_input;
		if ( n_input < 0 ) n = p / ( dim_t )abs(n_input);
		else               n =     ( dim_t )    n_input;
		if ( k_input < 0 ) k = p / ( dim_t )abs(k_input);
		else               k =     ( dim_t )    k_input;

		bli_obj_create( dt, 1, 1, 0, 0, &alpha );
		bli_obj_create( dt, 1, 1, 0, 0, &beta );

		bli_obj_create( dt, m, k, 0, 0, &a );
		bli_obj_create( dt, k, n, 0, 0, &b );
		bli_obj_create( dt, m, n, 0, 0, &c );
		//bli_obj_create( dt, m, k, 2, 2*m, &a );
		//bli_obj_create( dt, k, n, 2, 2*k, &b );
		//bli_obj_create( dt, m, n, 2, 2*m, &c );
		bli_obj_create( dt, m, n, 0, 0, &c_save );

		bli_randm( &a );
		bli_randm( &b );
		bli_randm( &c );

		bli_obj_set_conjtrans( transa, a );
		bli_obj_set_conjtrans( transb, b );

		bli_setsc(  (2.0/1.0), 0.0, &alpha );
		bli_setsc( -(1.0/1.0), 0.0, &beta );


		bli_copym( &c, &c_save );
	
#ifdef BLIS
		bli_ind_disable_all_dt( dt );
		bli_ind_enable_dt( IND, dt );
#endif

		dtime_save = DBL_MAX;

		for ( r = 0; r < n_repeats; ++r )
		{
			bli_copym( &c_save, &c );


			dtime = bli_clock();


#ifdef PRINT
			bli_printm( "a", &a, "%4.1f", "" );
			bli_printm( "b", &b, "%4.1f", "" );
			bli_printm( "c", &c, "%4.1f", "" );
#endif

#ifdef BLIS

			bli_gemm( &alpha,
			          &a,
			          &b,
			          &beta,
			          &c );

#else

		if ( bli_is_float( dt ) )
		{
			f77_int  mm     = bli_obj_length( c );
			f77_int  kk     = bli_obj_width_after_trans( a );
			f77_int  nn     = bli_obj_width( c );
			f77_int  lda    = bli_obj_col_stride( a );
			f77_int  ldb    = bli_obj_col_stride( b );
			f77_int  ldc    = bli_obj_col_stride( c );
			float*   alphap = bli_obj_buffer( alpha );
			float*   ap     = bli_obj_buffer( a );
			float*   bp     = bli_obj_buffer( b );
			float*   betap  = bli_obj_buffer( beta );
			float*   cp     = bli_obj_buffer( c );

			sgemm_( &f77_transa,
			        &f77_transb,
			        &mm,
			        &nn,
			        &kk,
			        alphap,
			        ap, &lda,
			        bp, &ldb,
			        betap,
			        cp, &ldc );
		}
		else if ( bli_is_double( dt ) )
		{
			f77_int  mm     = bli_obj_length( c );
			f77_int  kk     = bli_obj_width_after_trans( a );
			f77_int  nn     = bli_obj_width( c );
			f77_int  lda    = bli_obj_col_stride( a );
			f77_int  ldb    = bli_obj_col_stride( b );
			f77_int  ldc    = bli_obj_col_stride( c );
			double*  alphap = bli_obj_buffer( alpha );
			double*  ap     = bli_obj_buffer( a );
			double*  bp     = bli_obj_buffer( b );
			double*  betap  = bli_obj_buffer( beta );
			double*  cp     = bli_obj_buffer( c );

			dgemm_( &f77_transa,
			        &f77_transb,
			        &mm,
			        &nn,
			        &kk,
			        alphap,
			        ap, &lda,
			        bp, &ldb,
			        betap,
			        cp, &ldc );
		}
		else if ( bli_is_scomplex( dt ) )
		{
			f77_int  mm     = bli_obj_length( c );
			f77_int  kk     = bli_obj_width_after_trans( a );
			f77_int  nn     = bli_obj_width( c );
			f77_int  lda    = bli_obj_col_stride( a );
			f77_int  ldb    = bli_obj_col_stride( b );
			f77_int  ldc    = bli_obj_col_stride( c );
			scomplex*  alphap = bli_obj_buffer( alpha );
			scomplex*  ap     = bli_obj_buffer( a );
			scomplex*  bp     = bli_obj_buffer( b );
			scomplex*  betap  = bli_obj_buffer( beta );
			scomplex*  cp     = bli_obj_buffer( c );

			cgemm_( &f77_transa,
			        &f77_transb,
			        &mm,
			        &nn,
			        &kk,
			        alphap,
			        ap, &lda,
			        bp, &ldb,
			        betap,
			        cp, &ldc );
		}
		else if ( bli_is_dcomplex( dt ) )
		{
			f77_int  mm     = bli_obj_length( c );
			f77_int  kk     = bli_obj_width_after_trans( a );
			f77_int  nn     = bli_obj_width( c );
			f77_int  lda    = bli_obj_col_stride( a );
			f77_int  ldb    = bli_obj_col_stride( b );
			f77_int  ldc    = bli_obj_col_stride( c );
			dcomplex*  alphap = bli_obj_buffer( alpha );
			dcomplex*  ap     = bli_obj_buffer( a );
			dcomplex*  bp     = bli_obj_buffer( b );
			dcomplex*  betap  = bli_obj_buffer( beta );
			dcomplex*  cp     = bli_obj_buffer( c );

			zgemm_( &f77_transa,
			//zgemm3m_( &f77_transa,
			        &f77_transb,
			        &mm,
			        &nn,
			        &kk,
			        alphap,
			        ap, &lda,
			        bp, &ldb,
			        betap,
			        cp, &ldc );
		}
#endif

#ifdef PRINT
			bli_printm( "c after", &c, "%4.1f", "" );
			exit(1);
#endif


			dtime_save = bli_clock_min_diff( dtime_save, dtime );
		}

		gflops = ( 2.0 * m * k * n ) / ( dtime_save * 1.0e9 );

		if ( bli_is_complex( dt ) ) gflops *= 4.0;

#ifdef BLIS
		printf( "data_%s_%cgemm_%s_blis", THR_STR, dt_ch, STR );
#else
		printf( "data_%s_%cgemm_%s",      THR_STR, dt_ch, STR );
#endif
		printf( "( %2lu, 1:5 ) = [ %4lu %4lu %4lu  %10.3e  %6.3f ];\n",
		        ( unsigned long )(p - p_begin + 1)/p_inc + 1,
		        ( unsigned long )m,
		        ( unsigned long )k,
		        ( unsigned long )n, dtime_save, gflops );

		bli_obj_free( &alpha );
		bli_obj_free( &beta );

		bli_obj_free( &a );
		bli_obj_free( &b );
		bli_obj_free( &c );
		bli_obj_free( &c_save );
	}

	bli_finalize();

	return 0;
}

