`scipy.linalg._flapack:sgttrs`

Signature

def sgttrs(dl, d, du, du2, ipiv, b, trans = N, overwrite_b = 0)

Solve a tridiagonal system using the factorization from gttrf (LAPACK sgttrs).

dl : ndarray: Multipliers defining L, as returned by gttrf.
d : ndarray: Diagonal of U, as returned by gttrf.
du : ndarray: First superdiagonal of U, as returned by gttrf.
du2 : ndarray: Second superdiagonal of U, as returned by gttrf.
ipiv : ndarray: Pivot indices from gttrf, 1-based.
b : ndarray: Right-hand side(s) of shape (n, nrhs).
trans : str, optional: 'N', 'T' or 'C' for the system, its transpose, or its conjugate transpose. Default is 'N'.
overwrite_b : int, optional: If nonzero, b may be overwritten in place. Default is 0.

x : ndarray: Solution of the system.
info : int: 0 on success; if negative, the -info-th argument had an illegal value.