add unit test for the sign operator

src/onnx/onnx.cpp

@@ -55,6 +55,7 @@ struct onnx_parser
         add_generic_op("Acos", op::acos{});
         add_generic_op("Atan", op::atan{});
         add_generic_op("Sqrt", op::sqrt{});
+        add_generic_op("Sign", op::sign{});
 
         add_binary_op("Add", op::add{});
         add_binary_op("Div", op::div{});

test/cpu_ops_test.cpp

@@ -557,6 +557,21 @@ TEST_CASE(sqrt_test)
     EXPECT(migraphx::verify_range(results_vector, gold));
 }
 
+TEST_CASE(sign_test)
+{
+    migraphx::program p;
+    migraphx::shape s{migraphx::shape::float_type, {5}};
+    auto l = p.add_literal(
+        migraphx::literal{s, {1.02481645, 0.85643062, -0.03404123, -0.92791926, 0.0}});
+    p.add_instruction(migraphx::op::sign{}, l);
+    p.compile(migraphx::cpu::target{});
+    auto result = p.eval({});
+    std::vector<float> results_vector;
+    result.visit([&](auto output) { results_vector.assign(output.begin(), output.end()); });
+    std::vector<float> gold = {1.0, 1.0, -1.0, -1.0, 0.0};
+    EXPECT(migraphx::verify_range(results_vector, gold));
+}
+
 TEST_CASE(log_test)
 {
     migraphx::program p;

test/gpu/miopen.cpp

@@ -268,6 +268,18 @@ struct test_sqrt : verify_program<test_sqrt>
     }
 };
 
+struct test_sign : verify_program<test_sign>
+{
+    migraphx::program create_program() const
+    {
+        migraphx::program p;
+        migraphx::shape s{migraphx::shape::double_type, {2, 3, 4, 6}};
+        auto param     = p.add_parameter("x", s);
+        p.add_instruction(migraphx::op::sign{}, param);
+        return p;
+    }
+};
+
 struct test_log : verify_program<test_log>
 {
     migraphx::program create_program() const

test/onnx/onnx_test.cpp

@@ -212,6 +212,16 @@ TEST_CASE(sqrt_test)
     EXPECT(p == prog);
 }
 
+TEST_CASE(sign_test)
+{
+    migraphx::program p;
+    auto input = p.add_parameter("x", migraphx::shape{migraphx::shape::double_type, {10, 5}});
+    p.add_instruction(migraphx::op::sign{}, input);
+
+    auto prog = migraphx::parse_onnx("sign_test.onnx");
+    EXPECT(p == prog);
+}
+
 TEST_CASE(log_test)
 {
     migraphx::program p;