FLA_Syr2k_ln_blk_var9.c File Reference

(r)

Functions
FLA_Error	FLA_Syr2k_ln_blk_var9 (FLA_Obj alpha, FLA_Obj A, FLA_Obj B, FLA_Obj beta, FLA_Obj C, fla_syr2k_t *cntl)

Function Documentation

FLA_Syr2k_ln_blk_var9()

FLA_Error FLA_Syr2k_ln_blk_var9	(	FLA_Obj	alpha,
		FLA_Obj	A,
		FLA_Obj	B,
		FLA_Obj	beta,
		FLA_Obj	C,
		fla_syr2k_t *	cntl )

{
  FLA_Obj AL,    AR,       A0,  A1,  A2;
 
  FLA_Obj BL,    BR,       B0,  B1,  B2;
 
  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 );
 
  FLA_Part_1x2( B,    &BL,  &BR,      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 );
 
    FLA_Repart_1x2_to_1x3( BL,  /**/ BR,        &B0, /**/ &B1, &B2,
                           b, FLA_RIGHT );
 
    /*------------------------------------------------------------*/
 
    /* C = C + A1 * B1' + B1 * A1' */
    FLA_Syr2k_internal( FLA_LOWER_TRIANGULAR, FLA_NO_TRANSPOSE, 
                        alpha, A1, B1, FLA_ONE, C,
                        FLA_Cntl_sub_syr2k( cntl ) );
 
    /*------------------------------------------------------------*/
 
    FLA_Cont_with_1x3_to_1x2( &AL,  /**/ &AR,        A0, A1, /**/ A2,
                              FLA_LEFT );
 
    FLA_Cont_with_1x3_to_1x2( &BL,  /**/ &BR,        B0, B1, /**/ B2,
                              FLA_LEFT );
 
  }
 
  return FLA_SUCCESS;
}

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_Syr2k_internal().

Referenced by FLA_Syr2k_ln().