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pa-112

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Meisam Bahadori 2026-07-26 17:19:36 +02:00 committed by Holger Vogt
parent 648dd4bb8f
commit dab25f0e4c
1 changed files with 16 additions and 9 deletions
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25
src/maths/KLU/klu_multiply.c
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@ -76,7 +76,7 @@ Int KLU_matrix_vector_multiply /* return TRUE if successful, FALSE other
)
{
Entry *Az, *Intermediate, Sum ;
Int i, j, *pExtOrder ;
Int i, j, ei ;
/* ---------------------------------------------------------------------- */
/* check inputs */
@ -106,21 +106,28 @@ Int KLU_matrix_vector_multiply /* return TRUE if successful, FALSE other
Az = (Entry *)Ax ;
pExtOrder = &IntToExtColMap [n] ;
for (i = n - 1 ; i >= 0 ; i--)
{
/* Internal index i (0-based CSR row/col) maps to external vector index
IntToExtColMap[i+1]. A NULL map means internal order == external
order, i.e. the identity map ext = i+1 (external RHS/Solution vectors
are 1-based; entry 0 is the grounded/unused reference). SMPmultiply
passes NULL, so this identity path is what makes the KLU
matrix-vector product (and hence the E-111 line-search residual
merit) work under the KLU solver. */
ei = (IntToExtColMap != NULL) ? IntToExtColMap [i + 1] : (i + 1) ;
#ifdef COMPLEX
Intermediate [i].Real = Solution [*(pExtOrder)] ;
Intermediate [i].Imag = iSolution [*(pExtOrder--)] ;
Intermediate [i].Real = Solution [ei] ;
Intermediate [i].Imag = iSolution [ei] ;
#else
Intermediate [i] = Solution [*(pExtOrder--)] ;
Intermediate [i] = Solution [ei] ;
#endif
}
pExtOrder = &IntToExtRowMap [n] ;
for (i = n - 1 ; i >= 0 ; i--)
{
ei = (IntToExtRowMap != NULL) ? IntToExtRowMap [i + 1] : (i + 1) ;
#ifdef COMPLEX
Sum.Real = 0.0 ;
@ -141,10 +148,10 @@ Int KLU_matrix_vector_multiply /* return TRUE if successful, FALSE other
}
#ifdef COMPLEX
RHS [*(pExtOrder)] = Sum.Real ;
iRHS [*(pExtOrder--)] = Sum.Imag ;
RHS [ei] = Sum.Real ;
iRHS [ei] = Sum.Imag ;
#else
RHS [*(pExtOrder--)] = Sum ;
RHS [ei] = Sum ;
#endif
}