add addmv_ to torch tensor (ivy-llc#21200)

Co-authored-by: Felix Hirwa Nshuti <hirwanshutiflx@gmail.com>

ivy/functional/frontends/torch/tensor.py

@@ -173,6 +173,13 @@ def addmm_(self, mat1, mat2, *, beta=1, alpha=1):
     def addmv(self, mat, vec, *, beta=1, alpha=1):
         return torch_frontend.addmv(self, mat, vec, beta=beta, alpha=alpha)
 
+    @with_unsupported_dtypes({"2.0.1 and below": ("float16",)}, "torch")
+    def addmv_(self, mat, vec, *, beta=1, alpha=1):
+        self.ivy_array = torch_frontend.addmv(
+            self, mat, vec, beta=beta, alpha=alpha
+        ).ivy_array
+        return self
+
     @with_unsupported_dtypes({"2.0.1 and below": ("float16",)}, "torch")
     def addbmm(self, batch1, batch2, *, beta=1, alpha=1):
         return torch_frontend.addbmm(self, batch1, batch2, beta=beta, alpha=alpha)

ivy_tests/test_ivy/test_frontends/test_torch/test_tensor.py

@@ -614,6 +614,61 @@ def test_torch_addmv(
     )
 
 
+# addmv_
+@handle_frontend_method(
+    class_tree=CLASS_TREE,
+    init_tree="torch.tensor",
+    method_name="addmv_",
+    dtype_and_matrices=_get_dtype_input_and_mat_vec(with_input=True),
+    beta=st.floats(
+        min_value=-5,
+        max_value=5,
+        allow_nan=False,
+        allow_subnormal=False,
+        allow_infinity=False,
+    ),
+    alpha=st.floats(
+        min_value=-5,
+        max_value=5,
+        allow_nan=False,
+        allow_subnormal=False,
+        allow_infinity=False,
+    ),
+)
+def test_torch_addmv_(
+    dtype_and_matrices,
+    beta,
+    alpha,
+    frontend,
+    frontend_method_data,
+    init_flags,
+    method_flags,
+    on_device,
+    backend_fw,
+):
+    input_dtype, x, mat, vec = dtype_and_matrices
+    helpers.test_frontend_method(
+        init_input_dtypes=input_dtype,
+        init_all_as_kwargs_np={
+            "data": x,
+        },
+        method_input_dtypes=input_dtype,
+        backend_to_test=backend_fw,
+        method_all_as_kwargs_np={
+            "mat": mat,
+            "vec": vec,
+            "beta": beta,
+            "alpha": alpha,
+        },
+        frontend_method_data=frontend_method_data,
+        init_flags=init_flags,
+        method_flags=method_flags,
+        frontend=frontend,
+        atol_=1e-02,
+        on_device=on_device,
+    )
+
+
 # addbmm
 @handle_frontend_method(
     class_tree=CLASS_TREE,