FLA_Gemm_tt_unb_var1.c File Reference

(r12600)

Functions
FLA_Error	FLA_Gemm_tt_unb_var1 (FLA_Obj alpha, FLA_Obj A, FLA_Obj B, FLA_Obj beta, FLA_Obj C)

---

Function Documentation

FLA_Error FLA_Gemm_tt_unb_var1	(	FLA_Obj	alpha,
		FLA_Obj	A,
		FLA_Obj	B,
		FLA_Obj	beta,
		FLA_Obj	C
	)

References FLA_Cont_with_1x3_to_1x2(), FLA_Cont_with_3x1_to_2x1(), FLA_Gemv_external(), FLA_Obj_width(), FLA_ONE, FLA_Part_1x2(), FLA_Part_2x1(), FLA_Repart_1x2_to_1x3(), FLA_Repart_2x1_to_3x1(), and FLA_Scal_external().

Referenced by FLA_Gemm_tt().

{
  FLA_Obj AL,    AR,       A0,  a1,  A2;

  FLA_Obj CT,              C0,
          CB,              c1t,
                           C2;

  FLA_Scal_external( beta, C );

  FLA_Part_1x2( A,    &AL,  &AR,      0, FLA_LEFT );

  FLA_Part_2x1( C,    &CT, 
                      &CB,            0, FLA_TOP );

  while ( FLA_Obj_width( AL ) < FLA_Obj_width( A ) ){

    FLA_Repart_1x2_to_1x3( AL,  /**/ AR,        &A0, /**/ &a1, &A2,
                           1, FLA_RIGHT );

    FLA_Repart_2x1_to_3x1( CT,                &C0, 
                        /* ** */            /* *** */
                                              &c1t, 
                           CB,                &C2,        1, FLA_BOTTOM );

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

    /* c1t  = a1' * B' + c1t    */
    /* c1t' = B * a1 + c1t' */
    FLA_Gemv_external( FLA_NO_TRANSPOSE, alpha, B, a1, FLA_ONE, c1t );

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

    FLA_Cont_with_1x3_to_1x2( &AL,  /**/ &AR,        A0, a1, /**/ A2,
                              FLA_LEFT );

    FLA_Cont_with_3x1_to_2x1( &CT,                C0, 
                                                  c1t, 
                            /* ** */           /* *** */
                              &CB,                C2,     FLA_TOP );

  }

  return FLA_SUCCESS;
}