func TestBidiagReduceUnblocked(t *testing.T) {
N := 217
M := 269
conf := gomas.NewConf()
conf.LB = 0
zeromean := cmat.NewFloatNormSource()
A := cmat.NewMatrix(M, N)
A.SetFrom(zeromean)
tauq := cmat.NewMatrix(N, 1)
taup := cmat.NewMatrix(N, 1)
At := cmat.NewMatrix(N, M)
blasd.Transpose(At, A)
tauqt := cmat.NewMatrix(N, 1)
taupt := cmat.NewMatrix(N, 1)
W := lapackd.Workspace(M + N)
lapackd.BDReduce(A, tauq, taup, W, conf)
lapackd.BDReduce(At, tauqt, taupt, W, conf)
// BiRed(A) == BiRed(A.T).T
blasd.Plus(At, A, 1.0, -1.0, gomas.TRANSB)
blasd.Axpy(tauqt, taup, -1.0)
blasd.Axpy(taupt, tauq, -1.0)
nrm := lapackd.NormP(At, lapackd.NORM_ONE)
t.Logf("M=%d, N=%d || BiRed(A) - BiRed(A.T).T||_1 : %e\n", M, N, nrm)
nrm = lapackd.NormP(taupt, lapackd.NORM_ONE)
t.Logf(" || BiRed(A).tauq - BiRed(A.T).taup||_1 : %e\n", nrm)
nrm = lapackd.NormP(tauqt, lapackd.NORM_ONE)
t.Logf(" || BiRed(A).taup - BiRed(A.T).tauq||_1 : %e\n", nrm)
}
func TestReduceBidiagBlkWide(t *testing.T) {
N := 911
M := 823
nb := 48
conf := gomas.NewConf()
conf.LB = 0
zeromean := cmat.NewFloatNormSource()
A := cmat.NewMatrix(M, N)
A.SetFrom(zeromean)
tauq := cmat.NewMatrix(N, 1)
taup := cmat.NewMatrix(N, 1)
A1 := cmat.NewCopy(A)
tauq1 := cmat.NewMatrix(N, 1)
taup1 := cmat.NewMatrix(N, 1)
W := lapackd.Workspace(M + N)
lapackd.BDReduce(A, tauq, taup, W, conf)
conf.LB = nb
W1 := lapackd.Workspace(lapackd.BDReduceWork(A1, conf))
lapackd.BDReduce(A1, tauq1, taup1, W1, conf)
// BiRed(A) == BiRed(A.T).T
blasd.Plus(A1, A, 1.0, -1.0, gomas.NONE)
blasd.Axpy(tauq1, tauq, -1.0)
blasd.Axpy(taup1, taup, -1.0)
nrm := lapackd.NormP(A1, lapackd.NORM_ONE)
t.Logf("M=%d, N=%d || BiRed(A) - blk.BiRed(A)||_1 : %e\n", M, N, nrm)
nrm = lapackd.NormP(taup1, lapackd.NORM_ONE)
t.Logf(" || BiRed(A).tauq - blk.BiRed(A).taup||_1 : %e\n", nrm)
nrm = lapackd.NormP(tauq1, lapackd.NORM_ONE)
t.Logf(" || BiRed(A).taup - blk.BiRed(A).tauq||_1 : %e\n", nrm)
}
func TestBidiagReduceBlockedTall(t *testing.T) {
N := 711
M := 883
nb := 64
conf := gomas.NewConf()
conf.LB = 0
zeromean := cmat.NewFloatNormSource()
A := cmat.NewMatrix(M, N)
A.SetFrom(zeromean)
tauq := cmat.NewMatrix(N, 1)
taup := cmat.NewMatrix(N, 1)
A1 := cmat.NewCopy(A)
tauq1 := cmat.NewMatrix(N, 1)
taup1 := cmat.NewMatrix(N, 1)
W := lapackd.Workspace(M + N)
W1 := lapackd.Workspace(nb * (M + N + 1))
lapackd.BDReduce(A, tauq, taup, W, conf)
conf.LB = nb
lapackd.BDReduce(A1, tauq1, taup1, W1, conf)
// unblk.BiRed(A) == blk.BiRed(A)
blasd.Plus(A1, A, 1.0, -1.0, gomas.NONE)
blasd.Axpy(tauq1, tauq, -1.0)
blasd.Axpy(taup1, taup, -1.0)
nrm := lapackd.NormP(A1, lapackd.NORM_ONE)
t.Logf("M=%d, N=%d || unblk.BiRed(A) - blk.BiRed(A)||_1 : %e\n", M, N, nrm)
nrm = lapackd.NormP(taup1, lapackd.NORM_ONE)
t.Logf(" || unblk.BiRed(A).tauq - blk.BiRed(A).taup||_1 : %e\n", nrm)
nrm = lapackd.NormP(tauq1, lapackd.NORM_ONE)
t.Logf(" || unblk.BiRed(A).taup - blk.BiRed(A).tauq||_1 : %e\n", nrm)
}
func TestBiredWide(t *testing.T) {
N := 811
M := 693
nb := 32
conf := gomas.NewConf()
conf.LB = 0
ediag := -1
zeromean := cmat.NewFloatNormSource()
A := cmat.NewMatrix(M, N)
A.SetFrom(zeromean)
A0 := cmat.NewCopy(A)
tauq := cmat.NewMatrix(N, 1)
taup := cmat.NewMatrix(N, 1)
W := lapackd.Workspace(M + N)
lapackd.BDReduce(A, tauq, taup, W, conf)
var D, E, Bd, Be cmat.FloatMatrix
D.Diag(A)
E.Diag(A, ediag)
B := cmat.NewMatrix(M, N)
Bd.Diag(B)
Be.Diag(B, ediag)
blasd.Copy(&Bd, &D)
blasd.Copy(&Be, &E)
Bt := cmat.NewMatrix(N, M)
blasd.Transpose(Bt, B)
conf.LB = nb
W0 := lapackd.Workspace(lapackd.BDMultWork(B, conf))
lapackd.BDMult(B, A, tauq, W0, gomas.MULTQ|gomas.LEFT, conf)
lapackd.BDMult(Bt, A, tauq, W0, gomas.MULTQ|gomas.RIGHT|gomas.TRANS, conf)
lapackd.BDMult(B, A, taup, W0, gomas.MULTP|gomas.RIGHT|gomas.TRANS, conf)
lapackd.BDMult(Bt, A, taup, W0, gomas.MULTP|gomas.LEFT, conf)
blasd.Plus(B, A0, 1.0, -1.0, gomas.NONE)
nrm := lapackd.NormP(B, lapackd.NORM_ONE)
t.Logf("M=%d, N=%d ||A - Q*B*P.T||_1 : %e\n", M, N, nrm)
blasd.Plus(Bt, A0, 1.0, -1.0, gomas.TRANSB)
nrm = lapackd.NormP(Bt, lapackd.NORM_ONE)
t.Logf("M=%d, N=%d ||A.T - P*B.T*Q.T||_1 : %e\n", M, N, nrm)
}