def cho_factor(a, lower=False, overwrite_a=False, check_finite=True):
 (c, lower) = _cholesky(a, lower=lower, overwrite_a=overwrite_a, clean=False, check_finite=check_finite)
 return (c, lower)

def cho_factor ( a , lower = False , overwrite_a = False , check_finite = True ) : ( c , lower ) = _cholesky ( a , lower = lower , overwrite_a = overwrite_a , clean = False , check_finite = check_finite ) return ( c , lower )
compute the cholesky decomposition of a matrix .