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Functions
FLA_Syrk_ln_blk_var5.c File Reference

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Functions

FLA_Error FLA_Syrk_ln_blk_var5 (FLA_Obj alpha, FLA_Obj A, FLA_Obj beta, FLA_Obj C, fla_syrk_t *cntl)

Function Documentation

FLA_Error FLA_Syrk_ln_blk_var5 ( FLA_Obj  alpha,
FLA_Obj  A,
FLA_Obj  beta,
FLA_Obj  C,
fla_syrk_t cntl 
)

References FLA_Cont_with_1x3_to_1x2(), FLA_Determine_blocksize(), FLA_Obj_width(), FLA_ONE, FLA_Part_1x2(), FLA_Repart_1x2_to_1x3(), FLA_Scalr_internal(), and FLA_Syrk_internal().

Referenced by FLA_Syrk_ln().

{
  FLA_Obj AL,    AR,       A0,  A1,  A2;

  dim_t b;

  FLA_Scalr_internal( FLA_LOWER_TRIANGULAR, beta, C,
                      FLA_Cntl_sub_scalr( cntl ) );

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

  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 );

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

    /* C = C + A1 * A1' */
    FLA_Syrk_internal( FLA_LOWER_TRIANGULAR, FLA_NO_TRANSPOSE, 
                       alpha, A1, FLA_ONE, C,
                       FLA_Cntl_sub_syrk( cntl ) );

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

    FLA_Cont_with_1x3_to_1x2( &AL,  /**/ &AR,        A0, A1, /**/ A2,
                              FLA_LEFT );
  }

  return FLA_SUCCESS;
}