document that `torch.triangular_solve` has optional out= parameter (#63253)

Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/63253

Fixes #57955

Test Plan: Imported from OSS

Reviewed By: malfet

Differential Revision: D30312134

Pulled By: dagitses

fbshipit-source-id: 4f484620f5754f4324a99bbac1ff783c64cee6b8

diff --git a/torch/_torch_docs.py b/torch/_torch_docs.py
index a4f3bda..bbb8d98 100644 (file)
--- a/torch/_torch_docs.py
+++ b/torch/_torch_docs.py
@@ -9679,7 +9679,7 @@ See also :func:`torch.t`.
 
 add_docstr(torch.triangular_solve,
            r"""
-triangular_solve(b, A, upper=True, transpose=False, unitriangular=False) -> (Tensor, Tensor)
+triangular_solve(b, A, upper=True, transpose=False, unitriangular=False, *, out=None) -> (Tensor, Tensor)
 
 Solves a system of equations with a triangular coefficient matrix :math:`A`
 and multiple right-hand sides :math:`b`.
@@ -9706,6 +9706,10 @@ Args:
         If True, the diagonal elements of :math:`A` are assumed to be
         1 and not referenced from :math:`A`. Default: ``False``.
 
+Keyword args:
+    out ((Tensor, Tensor), optional): tuple of two tensors to write
+        the output to. Ignored if `None`. Default: `None`.
+
 Returns:
     A namedtuple `(solution, cloned_coefficient)` where `cloned_coefficient`
     is a clone of :math:`A` and `solution` is the solution :math:`X` to :math:`AX = b`