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Functions
FLASH_QR_UT_solve.c File Reference

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Functions

FLA_Error FLASH_QR_UT_solve (FLA_Obj A, FLA_Obj TW, FLA_Obj B, FLA_Obj X)
 

Function Documentation

◆ FLASH_QR_UT_solve()

FLA_Error FLASH_QR_UT_solve ( FLA_Obj  A,
FLA_Obj  TW,
FLA_Obj  B,
FLA_Obj  X 
)
14 {
15  FLA_Obj W, Y;
16  FLA_Obj AT, AB;
17  FLA_Obj YT, YB;
18 
19  // Check parameters.
20  if ( FLA_Check_error_level() >= FLA_MIN_ERROR_CHECKING )
21  FLA_QR_UT_solve_check( A, TW, B, X );
22 
24 
25  FLASH_Obj_create_copy_of( FLA_NO_TRANSPOSE, B, &Y );
26 
27  FLASH_Apply_Q_UT( FLA_LEFT, FLA_CONJ_TRANSPOSE, FLA_FORWARD, FLA_COLUMNWISE,
28  A, TW, W, Y );
29 
30  FLA_Part_2x1( A, &AT,
31  &AB, FLA_Obj_width( A ), FLA_TOP );
32  FLA_Part_2x1( Y, &YT,
33  &YB, FLA_Obj_width( A ), FLA_TOP );
34 
35  FLASH_Trsm( FLA_LEFT, FLA_UPPER_TRIANGULAR, FLA_NO_TRANSPOSE, FLA_NONUNIT_DIAG,
36  FLA_ONE, AT, YT );
37 
38  FLASH_Copy( YT, X );
39 
40  FLASH_Obj_free( &Y );
41  FLASH_Obj_free( &W );
42 
43  return FLA_SUCCESS;
44 }
FLA_Error FLASH_Copy(FLA_Obj A, FLA_Obj B)
Definition: FLASH_Copy.c:15
FLA_Error FLASH_Trsm(FLA_Side side, FLA_Uplo uplo, FLA_Trans trans, FLA_Diag diag, FLA_Obj alpha, FLA_Obj A, FLA_Obj B)
Definition: FLASH_Trsm.c:15
FLA_Error FLASH_Apply_Q_UT(FLA_Side side, FLA_Trans trans, FLA_Direct direct, FLA_Store storev, FLA_Obj A, FLA_Obj T, FLA_Obj W, FLA_Obj B)
Definition: FLASH_Apply_Q_UT.c:16
void FLASH_Obj_free(FLA_Obj *H)
Definition: FLASH_Obj.c:638
FLA_Error FLASH_Obj_create_copy_of(FLA_Trans trans, FLA_Obj H_cur, FLA_Obj *H_new)
Definition: FLASH_Obj.c:561
FLA_Error FLASH_Apply_Q_UT_create_workspace(FLA_Obj TW, FLA_Obj B, FLA_Obj *W)
Definition: FLASH_Apply_Q_UT_create_workspace.c:13
FLA_Error FLA_QR_UT_solve_check(FLA_Obj A, FLA_Obj T, FLA_Obj B, FLA_Obj X)
Definition: FLA_QR_UT_solve_check.c:13
FLA_Obj FLA_ONE
Definition: FLA_Init.c:18
dim_t FLA_Obj_width(FLA_Obj obj)
Definition: FLA_Query.c:123
FLA_Error FLA_Part_2x1(FLA_Obj A, FLA_Obj *A1, FLA_Obj *A2, dim_t mb, FLA_Side side)
Definition: FLA_View.c:76
unsigned int FLA_Check_error_level(void)
Definition: FLA_Check.c:18
Definition: FLA_type_defs.h:159

References FLA_Check_error_level(), FLA_Obj_width(), FLA_ONE, FLA_Part_2x1(), FLA_QR_UT_solve_check(), FLASH_Apply_Q_UT(), FLASH_Apply_Q_UT_create_workspace(), FLASH_Copy(), FLASH_Obj_create_copy_of(), FLASH_Obj_free(), and FLASH_Trsm().