FLA_Gemm_th_unb_var2.c File Reference

(r)


Functions

FLA_Error FLA_Gemm_th_unb_var2 (FLA_Obj alpha, FLA_Obj A, FLA_Obj B, FLA_Obj beta, FLA_Obj C)

Function Documentation

FLA_Error FLA_Gemm_th_unb_var2 ( FLA_Obj  alpha,
FLA_Obj  A,
FLA_Obj  B,
FLA_Obj  beta,
FLA_Obj  C 
)

References FLA_Cont_with_1x3_to_1x2(), FLA_Cont_with_3x1_to_2x1(), FLA_Gemv_external(), FLA_Obj_width(), FLA_ONE, FLA_Part_1x2(), FLA_Part_2x1(), FLA_Repart_1x2_to_1x3(), FLA_Repart_2x1_to_3x1(), and FLA_Scal_external().

00038 {
00039   FLA_Obj AL,    AR,       A0,  a1,  A2;
00040 
00041   FLA_Obj CT,              C0,
00042           CB,              c1t,
00043                            C2;
00044 
00045   FLA_Scal_external( beta, C );
00046 
00047   FLA_Part_1x2( A,    &AL,  &AR,      0, FLA_RIGHT );
00048 
00049   FLA_Part_2x1( C,    &CT, 
00050                       &CB,            0, FLA_BOTTOM );
00051 
00052   while ( FLA_Obj_width( AR ) < FLA_Obj_width( A ) ){
00053 
00054     FLA_Repart_1x2_to_1x3( AL,  /**/ AR,        &A0, &a1, /**/ &A2,
00055                            1, FLA_LEFT );
00056 
00057     FLA_Repart_2x1_to_3x1( CT,                &C0, 
00058                                               &c1t, 
00059                         /* ** */            /* *** */
00060                            CB,                &C2,        1, FLA_TOP );
00061 
00062     /*------------------------------------------------------------*/
00063 
00064     /* c1t  = a1' * B' + c1t    */
00065     /* c1t' = B * a1 + c1t' */
00066     FLA_Gemv_external( FLA_NO_TRANSPOSE, alpha, B, a1, FLA_ONE, c1t );
00067 
00068     /*------------------------------------------------------------*/
00069 
00070     FLA_Cont_with_1x3_to_1x2( &AL,  /**/ &AR,        A0, /**/ a1, A2,
00071                               FLA_RIGHT );
00072 
00073     FLA_Cont_with_3x1_to_2x1( &CT,                C0, 
00074                             /* ** */           /* *** */
00075                                                   c1t, 
00076                               &CB,                C2,     FLA_BOTTOM );
00077 
00078   }
00079 
00080   return FLA_SUCCESS;
00081 }


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