func checkGbtrs(ind *linalg.IndexOpts, A, B matrix.Matrix, ipiv []int32) error {
arows := ind.LDa
brows := ind.LDb
if ind.Kl < 0 {
return onError("Gbtrs: invalid kl")
}
if ind.N < 0 {
ind.N = A.Rows()
}
if ind.Nrhs < 0 {
ind.Nrhs = A.Cols()
}
if ind.N == 0 || ind.Nrhs == 0 {
return nil
}
if ind.Ku < 0 {
ind.Ku = A.Rows() - 2*ind.Kl - 1
}
if ind.Ku < 0 {
return onError("Gbtrs: invalid ku")
}
if ind.LDa == 0 {
ind.LDa = max(1, A.LeadingIndex())
arows = max(1, A.Rows())
}
if ind.LDa < 2*ind.Kl+ind.Ku+1 {
return onError("Gbtrs: lda")
}
if ind.OffsetA < 0 {
return onError("Gbtrs: offsetA")
}
sizeA := A.NumElements()
if sizeA < ind.OffsetA+(ind.N-1)*arows+2*ind.Kl+ind.Ku+1 {
return onError("Gbtrs: sizeA")
}
if ind.LDb == 0 {
ind.LDb = max(1, B.LeadingIndex())
brows = max(1, B.Rows())
}
if ind.OffsetB < 0 {
return onError("Gbtrs: offsetB")
}
sizeB := B.NumElements()
if sizeB < ind.OffsetB+(ind.Nrhs-1)*brows+ind.N {
return onError("Gbtrs: sizeB")
}
if ipiv != nil && len(ipiv) < ind.N {
return onError("Gbtrs: size ipiv")
}
return nil
}
func checkPosv(ind *linalg.IndexOpts, A, B matrix.Matrix) error {
arows := ind.LDa
brows := ind.LDb
if ind.N < 0 {
ind.N = A.Rows()
}
if ind.Nrhs < 0 {
ind.Nrhs = B.Cols()
}
if ind.N == 0 || ind.Nrhs == 0 {
return nil
}
if ind.LDa == 0 {
ind.LDa = max(1, A.LeadingIndex())
arows = max(1, A.Rows())
}
if ind.LDa < max(1, ind.N) {
return onError("Posv: lda")
}
if ind.LDb == 0 {
ind.LDb = max(1, B.LeadingIndex())
brows = max(1, B.Rows())
}
if ind.LDb < max(1, ind.N) {
return onError("Posv: ldb")
}
if ind.OffsetA < 0 {
return onError("Posv: offsetA")
}
sizeA := A.NumElements()
if sizeA < ind.OffsetA+(ind.N-1)*arows+ind.N {
return onError("Posv: sizeA")
}
if ind.OffsetB < 0 {
return onError("Posv: offsetB")
}
sizeB := B.NumElements()
if sizeB < ind.OffsetB+(ind.Nrhs-1)*brows+ind.N {
return onError("Posv: sizeB")
}
return nil
}
