extern "C" void
magma_ztrdtype2cbHLsym_withQ_v2(magma_int_t n, magma_int_t nb,
magmaDoubleComplex *A, magma_int_t lda,
magmaDoubleComplex *V, magma_int_t ldv,
magmaDoubleComplex *TAU,
magma_int_t st, magma_int_t ed,
magma_int_t sweep, magma_int_t Vblksiz,
magmaDoubleComplex *work)
{
/*
WORK (workspace) double complex array, dimension NB
*/
magma_int_t ione = 1;
magma_int_t vpos, taupos;
magmaDoubleComplex conjtmp;
magmaDoubleComplex c_one = MAGMA_Z_ONE;
magma_int_t ldx = lda-1;
magma_int_t len = ed - st + 1;
magma_int_t lem = min(ed+nb, n) - ed;
if(lem>0){
magma_bulge_findVTAUpos(n, nb, Vblksiz, sweep-1, st-1, ldv, &vpos, &taupos);
/* apply remaining right coming from the top block */
lapackf77_zlarfx("R", &lem, &len, V(vpos), TAU(taupos), A(ed+1, st), &ldx, work);
}
if(lem>1){
magma_bulge_findVTAUpos(n, nb, Vblksiz, sweep-1, ed, ldv, &vpos, &taupos);
/* remove the first column of the created bulge */
*V(vpos) = c_one;
//memcpy(V(vpos+1), A(ed+2, st), (lem-1)*sizeof(magmaDoubleComplex));
cblas_zcopy(lem-1, A(ed+2, st), ione, V(vpos+1), ione);
memset(A(ed+2, st),0,(lem-1)*sizeof(magmaDoubleComplex));
/* Eliminate the col at st */
lapackf77_zlarfg( &lem, A(ed+1, st), V(vpos+1), &ione, TAU(taupos) );
/* apply left on A(J1:J2,st+1:ed) */
len = len-1; /* because we start at col st+1 instead of st. col st is the col that has been removed;*/
conjtmp = MAGMA_Z_CNJG(*TAU(taupos));
lapackf77_zlarfx("L", &lem, &len, V(vpos), &conjtmp, A(ed+1, st+1), &ldx, work);
}
}
extern "C" void magma_ztrdtype2cbHLsym_withQ(magma_int_t N, magma_int_t NB, magmaDoubleComplex *A, magma_int_t LDA, magmaDoubleComplex *V, magmaDoubleComplex *TAU, magma_int_t st, magma_int_t ed, magma_int_t sweep, magma_int_t Vblksiz) {
magma_int_t J1, J2, len, lem, LDX;
//magma_int_t i, j;
magma_int_t IONE=1;
magma_int_t blkid, vpos, taupos, tpos;
magmaDoubleComplex conjtmp;
magmaDoubleComplex Z_ONE = MAGMA_Z_ONE;
//magmaDoubleComplex WORK[NB];
magmaDoubleComplex *WORK;
magma_zmalloc_cpu( &WORK, NB );
findVTpos(N,NB,Vblksiz,sweep-1,st-1, &vpos, &taupos, &tpos, &blkid);
LDX = LDA-1;
J1 = ed+1;
J2 = min(ed+NB,N);
len = ed-st+1;
lem = J2-J1+1;
if (lem > 0) {
/* apply remaining right commming from the top block */
lapackf77_zlarfx("R", &lem, &len, V(vpos), TAU(taupos), A(J1, st), &LDX, WORK);
}
if (lem > 1) {
findVTpos(N,NB,Vblksiz,sweep-1,J1-1, &vpos, &taupos, &tpos, &blkid);
/* remove the first column of the created bulge */
*V(vpos) = Z_ONE;
memcpy(V(vpos+1), A(J1+1, st), (lem-1)*sizeof(magmaDoubleComplex));
memset(A(J1+1, st),0,(lem-1)*sizeof(magmaDoubleComplex));
/* Eliminate the col at st */
lapackf77_zlarfg( &lem, A(J1, st), V(vpos+1), &IONE, TAU(taupos) );
/* apply left on A(J1:J2,st+1:ed) */
len = len-1; /* because we start at col st+1 instead of st. col st is the col that has been revomved; */
conjtmp = MAGMA_Z_CNJG(*TAU(taupos));
lapackf77_zlarfx("L", &lem, &len, V(vpos), &conjtmp, A(J1, st+1), &LDX, WORK);
}
magma_free_cpu(WORK);
}