FLA_Syrk_lt_blk_var4.c File Reference

(r)


Functions

FLA_Error FLA_Syrk_lt_blk_var4 (FLA_Obj alpha, FLA_Obj A, FLA_Obj beta, FLA_Obj C, fla_syrk_t *cntl)

Function Documentation

FLA_Error FLA_Syrk_lt_blk_var4 ( FLA_Obj  alpha,
FLA_Obj  A,
FLA_Obj  beta,
FLA_Obj  C,
fla_syrk_t cntl 
)

References FLA_Cont_with_1x3_to_1x2(), FLA_Cont_with_3x3_to_2x2(), FLA_Determine_blocksize(), FLA_Gemm_internal(), FLA_Obj_width(), FLA_Part_1x2(), FLA_Part_2x2(), FLA_Repart_1x2_to_1x3(), FLA_Repart_2x2_to_3x3(), and FLA_Syrk_internal().

Referenced by FLA_Syrk_lt().

00038 {
00039   FLA_Obj AL,    AR,       A0,  A1,  A2;
00040 
00041   FLA_Obj CTL,   CTR,      C00, C01, C02, 
00042           CBL,   CBR,      C10, C11, C12,
00043                            C20, C21, C22;
00044 
00045   dim_t b;
00046 
00047   FLA_Part_1x2( A,    &AL,  &AR,      0, FLA_RIGHT );
00048 
00049   FLA_Part_2x2( C,    &CTL, &CTR,
00050                       &CBL, &CBR,     0, 0, FLA_BR );
00051 
00052   while ( FLA_Obj_width( AR ) < FLA_Obj_width( A ) ){
00053 
00054     b = FLA_Determine_blocksize( AL, FLA_LEFT, FLA_Cntl_blocksize( cntl ) );
00055 
00056     FLA_Repart_1x2_to_1x3( AL,  /**/ AR,        &A0, &A1, /**/ &A2,
00057                            b, FLA_LEFT );
00058 
00059     FLA_Repart_2x2_to_3x3( CTL, /**/ CTR,       &C00, &C01, /**/ &C02,
00060                                                 &C10, &C11, /**/ &C12,
00061                         /* ************* */   /* ******************** */
00062                            CBL, /**/ CBR,       &C20, &C21, /**/ &C22,
00063                            b, b, FLA_TL );
00064 
00065     /*------------------------------------------------------------*/
00066 
00067     /* C10 = C10 + A1' * A0 */
00068     FLA_Gemm_internal( FLA_TRANSPOSE, FLA_NO_TRANSPOSE, 
00069                        alpha, A1, A0, beta, C10,
00070                        FLA_Cntl_sub_gemm( cntl ) );
00071 
00072     /* C11 = C11 + A1' * A1 */
00073     FLA_Syrk_internal( FLA_LOWER_TRIANGULAR, FLA_TRANSPOSE, 
00074                        alpha, A1, beta, C11,
00075                        FLA_Cntl_sub_syrk( cntl ) );
00076 
00077     /*------------------------------------------------------------*/
00078 
00079     FLA_Cont_with_1x3_to_1x2( &AL,  /**/ &AR,        A0, /**/ A1, A2,
00080                               FLA_RIGHT );
00081 
00082     FLA_Cont_with_3x3_to_2x2( &CTL, /**/ &CTR,       C00, /**/ C01, C02,
00083                             /* ************** */  /* ****************** */
00084                                                      C10, /**/ C11, C12,
00085                               &CBL, /**/ &CBR,       C20, /**/ C21, C22,
00086                               FLA_BR );
00087 
00088   }
00089 
00090   return FLA_SUCCESS;
00091 }


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