FLA_Syrk_lt_blk_var2.c File Reference

(r)

Functions
FLA_Error	FLA_Syrk_lt_blk_var2 (FLA_Obj alpha, FLA_Obj A, FLA_Obj beta, FLA_Obj C, fla_syrk_t *cntl)

Function Documentation

FLA_Syrk_lt_blk_var2()

FLA_Error FLA_Syrk_lt_blk_var2	(	FLA_Obj	alpha,
		FLA_Obj	A,
		FLA_Obj	beta,
		FLA_Obj	C,
		fla_syrk_t *	cntl
	)

{
  FLA_Obj AL,    AR,       A0,  A1,  A2;
 
  FLA_Obj CTL,   CTR,      C00, C01, C02, 
          CBL,   CBR,      C10, C11, C12,
                           C20, C21, C22;
 
  dim_t b;
 
  FLA_Part_1x2( A,    &AL,  &AR,      0, FLA_LEFT );
 
  FLA_Part_2x2( C,    &CTL, &CTR,
                      &CBL, &CBR,     0, 0, FLA_TL );
 
  while ( FLA_Obj_width( AL ) < FLA_Obj_width( A ) ){
 
    b = FLA_Determine_blocksize( AR, FLA_RIGHT, FLA_Cntl_blocksize( cntl ) );
 
    FLA_Repart_1x2_to_1x3( AL,  /**/ AR,        &A0, /**/ &A1, &A2,
                           b, FLA_RIGHT );
 
    FLA_Repart_2x2_to_3x3( CTL, /**/ CTR,       &C00, /**/ &C01, &C02,
                        /* ************* */   /* ******************** */
                                                &C10, /**/ &C11, &C12,
                           CBL, /**/ CBR,       &C20, /**/ &C21, &C22,
                           b, b, FLA_BR );
 
    /*------------------------------------------------------------*/
 
    /* C21 = C21 + A2' * A1 */
    FLA_Gemm_internal( FLA_TRANSPOSE, FLA_NO_TRANSPOSE, 
                       alpha, A2, A1, beta, C21,
                       FLA_Cntl_sub_gemm( cntl ) );
 
    /* C11 = C11 + A1' * A1 */
    FLA_Syrk_internal( FLA_LOWER_TRIANGULAR, FLA_TRANSPOSE, 
                       alpha, A1, beta, C11,
                       FLA_Cntl_sub_syrk( cntl ) );
 
    /*------------------------------------------------------------*/
 
    FLA_Cont_with_1x3_to_1x2( &AL,  /**/ &AR,        A0, A1, /**/ A2,
                              FLA_LEFT );
 
    FLA_Cont_with_3x3_to_2x2( &CTL, /**/ &CTR,       C00, C01, /**/ C02,
                                                     C10, C11, /**/ C12,
                            /* ************** */  /* ****************** */
                              &CBL, /**/ &CBR,       C20, C21, /**/ C22,
                              FLA_TL );
 
  }
 
  return FLA_SUCCESS;
}

References FLA_Cont_with_1x3_to_1x2(), FLA_Cont_with_3x3_to_2x2(), FLA_Determine_blocksize(), FLA_Gemm_internal(), FLA_Obj_width(), FLA_Part_1x2(), FLA_Part_2x2(), FLA_Repart_1x2_to_1x3(), FLA_Repart_2x2_to_3x3(), FLA_Syrk_internal(), and i.

Referenced by FLA_Syrk_lt().