FLA_Gemm_nh_unb_var1.c File Reference

(r12600)

Functions
FLA_Error	FLA_Gemm_nh_unb_var1 (FLA_Obj alpha, FLA_Obj A, FLA_Obj B, FLA_Obj beta, FLA_Obj C)

---

Function Documentation

FLA_Error FLA_Gemm_nh_unb_var1	(	FLA_Obj	alpha,
		FLA_Obj	A,
		FLA_Obj	B,
		FLA_Obj	beta,
		FLA_Obj	C
	)

References FLA_Cont_with_3x1_to_2x1(), FLA_Gemv_external(), FLA_Obj_length(), FLA_ONE, FLA_Part_2x1(), FLA_Repart_2x1_to_3x1(), and FLA_Scal_external().

Referenced by FLA_Gemm_nh().

{
  FLA_Obj AT,              A0,
          AB,              a1t,
                           A2;

  FLA_Obj CT,              C0,
          CB,              c1t,
                           C2;

  FLA_Scal_external( beta, C );

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

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

  while ( FLA_Obj_length( AT ) < FLA_Obj_length( A ) ){

    FLA_Repart_2x1_to_3x1( AT,                &A0, 
                        /* ** */            /* *** */
                                              &a1t, 
                           AB,                &A2,        1, FLA_BOTTOM );

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

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

    /* c1t  = a1t * B' + c1t  */
    /* c1t' = B * a1t' + c1t' */
    FLA_Gemv_external( FLA_CONJ_NO_TRANSPOSE, alpha, B, a1t, FLA_ONE, c1t );

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

    FLA_Cont_with_3x1_to_2x1( &AT,                A0, 
                                                  a1t, 
                            /* ** */           /* *** */
                              &AB,                A2,     FLA_TOP );

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

  }

  return FLA_SUCCESS;
}