FLA_Gemm_th_blk_var6.c File Reference

(r12600)

Functions
FLA_Error	FLA_Gemm_th_blk_var6 (FLA_Obj alpha, FLA_Obj A, FLA_Obj B, FLA_Obj beta, FLA_Obj C, fla_gemm_t *cntl)

---

Function Documentation

FLA_Error FLA_Gemm_th_blk_var6	(	FLA_Obj	alpha,
		FLA_Obj	A,
		FLA_Obj	B,
		FLA_Obj	beta,
		FLA_Obj	C,
		fla_gemm_t *	cntl
	)

References FLA_Cont_with_1x3_to_1x2(), FLA_Cont_with_3x1_to_2x1(), FLA_Determine_blocksize(), FLA_Gemm_internal(), FLA_Obj_length(), FLA_ONE, FLA_Part_1x2(), FLA_Part_2x1(), FLA_Repart_1x2_to_1x3(), FLA_Repart_2x1_to_3x1(), and FLA_Scal_internal().

Referenced by FLA_Gemm_th().

{
  FLA_Obj AT,              A0,
          AB,              A1,
                           A2;

  FLA_Obj BL,    BR,       B0,  B1,  B2;

  dim_t b;

  FLA_Scal_internal( beta, C,
                     FLA_Cntl_sub_scal( cntl ) );

  FLA_Part_2x1( A,    &AT, 
                      &AB,            0, FLA_BOTTOM );

  FLA_Part_1x2( B,    &BL,  &BR,      0, FLA_RIGHT );

  while ( FLA_Obj_length( AB ) < FLA_Obj_length( A ) ){

    b = FLA_Determine_blocksize( AT, FLA_TOP, FLA_Cntl_blocksize( cntl ) );

    FLA_Repart_2x1_to_3x1( AT,                &A0, 
                                              &A1, 
                        /* ** */            /* ** */
                           AB,                &A2,        b, FLA_TOP );

    FLA_Repart_1x2_to_1x3( BL,  /**/ BR,        &B0, &B1, /**/ &B2,
                           b, FLA_LEFT );

    /*------------------------------------------------------------*/

    /* C = alpha * A1' * B1' + C; */
    FLA_Gemm_internal( FLA_TRANSPOSE, FLA_CONJ_TRANSPOSE,
                       alpha, A1, B1, FLA_ONE, C,
                       FLA_Cntl_sub_gemm( cntl ) );

    /*------------------------------------------------------------*/

    FLA_Cont_with_3x1_to_2x1( &AT,                A0, 
                            /* ** */           /* ** */
                                                  A1, 
                              &AB,                A2,     FLA_BOTTOM );

    FLA_Cont_with_1x3_to_1x2( &BL,  /**/ &BR,        B0, /**/ B1, B2,
                              FLA_RIGHT );

  }

  return FLA_SUCCESS;
}