`scipy.linalg._flapack:zposv`

Signature

def zposv(a, b, lower = 0, overwrite_a = 0, overwrite_b = 0)

Solve a @ x = b for a positive definite a by Cholesky factorization (LAPACK zposv).

a : ndarray: Symmetric or Hermitian positive definite matrix of shape (n, n).
b : ndarray: Right-hand side(s) of shape (n, nrhs).
lower : int, optional: If nonzero, the lower triangle of a is referenced and the factor is lower triangular; otherwise the upper. Default is 0.
overwrite_a : int, optional: If nonzero, a may be overwritten in place. Default is 0.
overwrite_b : int, optional: If nonzero, b may be overwritten in place. Default is 0.

c : ndarray: Cholesky factor of a, in the selected triangle.
x : ndarray: Solution of the system.
info : int: 0 on success; if negative, the -info-th argument had an illegal value; if positive, the leading minor of order info is not positive definite.