FLA_Gemv_t_blk_var1.c File Reference

(r)


Functions

FLA_Error FLA_Gemv_t_blk_var1 (FLA_Obj alpha, FLA_Obj A, FLA_Obj x, FLA_Obj beta, FLA_Obj y, fla_gemv_t *cntl)

Function Documentation

FLA_Error FLA_Gemv_t_blk_var1 ( FLA_Obj  alpha,
FLA_Obj  A,
FLA_Obj  x,
FLA_Obj  beta,
FLA_Obj  y,
fla_gemv_t cntl 
)

References FLA_Cont_with_1x3_to_1x2(), FLA_Cont_with_3x1_to_2x1(), FLA_Determine_blocksize(), FLA_Gemv_internal(), FLA_Obj_width(), FLA_Part_1x2(), FLA_Part_2x1(), FLA_Repart_1x2_to_1x3(), and FLA_Repart_2x1_to_3x1().

Referenced by FLA_Gemv_t().

00036 {
00037   FLA_Obj AL,    AR,       A0,  A1,  A2;
00038 
00039   FLA_Obj yT,              y0,
00040           yB,              y1,
00041                            y2;
00042 
00043   dim_t b;
00044 
00045   FLA_Part_1x2( A,    &AL,  &AR,      0, FLA_LEFT );
00046 
00047   FLA_Part_2x1( y,    &yT, 
00048                       &yB,            0, FLA_TOP );
00049 
00050   while ( FLA_Obj_width( AL ) < FLA_Obj_width( A ) ){
00051 
00052     b = FLA_Determine_blocksize( AR, FLA_RIGHT, FLA_Cntl_blocksize( cntl ) );
00053 
00054     FLA_Repart_1x2_to_1x3( AL,  /**/ AR,        &A0, /**/ &A1, &A2,
00055                            b, FLA_RIGHT );
00056 
00057     FLA_Repart_2x1_to_3x1( yT,                &y0, 
00058                         /* ** */            /* ** */
00059                                               &y1, 
00060                            yB,                &y2,        b, FLA_BOTTOM );
00061 
00062     /*------------------------------------------------------------*/
00063 
00064     /* y1 = alpha * A1' * x + y1 */
00065     FLA_Gemv_internal( FLA_TRANSPOSE, 
00066                        alpha, A1, x, beta, y1,
00067                        FLA_Cntl_sub_gemv( cntl ) );
00068 
00069     /*------------------------------------------------------------*/
00070 
00071     FLA_Cont_with_1x3_to_1x2( &AL,  /**/ &AR,        A0, A1, /**/ A2,
00072                               FLA_LEFT );
00073 
00074     FLA_Cont_with_3x1_to_2x1( &yT,                y0, 
00075                                                   y1, 
00076                             /* ** */           /* ** */
00077                               &yB,                y2,     FLA_TOP );
00078 
00079   }
00080 
00081   return FLA_SUCCESS;
00082 }


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