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paddlepaddle--paddle/test/legacy_test/test_sign_op.py
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2026-07-13 12:40:42 +08:00

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# Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import unittest
import gradient_checker
import numpy as np
from decorator_helper import prog_scope
from op_test import (
OpTest,
convert_float_to_uint16,
get_device_place,
get_places,
is_custom_device,
)
import paddle
from paddle import base
from paddle.base import core
def complex_sign(x):
magnitude = np.abs(x)
result = np.zeros_like(x, dtype=x.dtype)
nonzero = magnitude != 0
result[nonzero] = x[nonzero] / magnitude[nonzero]
return result
class TestSignOp(OpTest):
def setUp(self):
self.op_type = "sign"
self.python_api = paddle.sign
self.inputs = {
'X': np.random.uniform(-10, 10, (10, 10)).astype("float64")
}
self.outputs = {'Out': np.sign(self.inputs['X'])}
def test_check_output(self):
self.check_output(check_pir=True, check_symbol_infer=False)
def test_check_grad(self):
self.check_grad(['X'], 'Out', check_pir=True)
class TestSignFP16Op(TestSignOp):
def setUp(self):
self.op_type = "sign"
self.python_api = paddle.sign
self.inputs = {
'X': np.random.uniform(-10, 10, (10, 10)).astype("float16")
}
self.outputs = {'Out': np.sign(self.inputs['X'])}
class TestSignComplex64Op(OpTest):
def setUp(self):
self.op_type = "sign"
self.python_api = paddle.sign
real_part = np.random.uniform(-10, 10, (10, 10))
imag_part = np.random.uniform(-10, 10, (10, 10))
self.inputs = {'X': (real_part + 1j * imag_part).astype("complex64")}
self.outputs = {'Out': complex_sign(self.inputs['X'])}
def test_check_output(self):
self.check_output(check_pir=True, check_symbol_infer=False)
class TestSignComplex128Op(OpTest):
def setUp(self):
self.op_type = "sign"
self.python_api = paddle.sign
real_part = np.random.uniform(-10, 10, (10, 10))
imag_part = np.random.uniform(-10, 10, (10, 10))
self.inputs = {'X': (real_part + 1j * imag_part).astype("complex128")}
self.outputs = {'Out': complex_sign(self.inputs['X'])}
def test_check_output(self):
self.check_output(check_pir=True, check_symbol_infer=False)
@unittest.skipIf(
not (core.is_compiled_with_cuda() or is_custom_device())
or not core.is_bfloat16_supported(get_device_place()),
"core is not compiled with CUDA or not support bfloat16",
)
class TestSignBF16Op(OpTest):
def setUp(self):
self.op_type = "sign"
self.python_api = paddle.sign
self.dtype = np.uint16
self.inputs = {
'X': np.random.uniform(-10, 10, (10, 10)).astype("float32")
}
self.outputs = {'Out': np.sign(self.inputs['X'])}
self.inputs['X'] = convert_float_to_uint16(self.inputs['X'])
self.outputs['Out'] = convert_float_to_uint16(self.outputs['Out'])
self.place = get_device_place()
def test_check_output(self):
self.check_output_with_place(
self.place, check_pir=True, check_symbol_infer=False
)
def test_check_grad(self):
self.check_grad_with_place(self.place, ['X'], 'Out', check_pir=True)
class TestSignAPI(unittest.TestCase):
def setUp(self):
self.place = get_places()
def test_dygraph(self):
with base.dygraph.guard():
np_x = np.array([-1.0, 0.0, -0.0, 1.2, 1.5], dtype='float64')
x = paddle.to_tensor(np_x)
z = paddle.sign(x)
np_z = z.numpy()
z_expected = np.sign(np_x)
self.assertEqual((np_z == z_expected).all(), True)
def test_static(self):
np_input1 = np.random.uniform(-10, 10, (12, 10)).astype("int8")
np_input2 = np.random.uniform(-10, 10, (12, 10)).astype("uint8")
np_input3 = np.random.uniform(-10, 10, (12, 10)).astype("int16")
np_input4 = np.random.uniform(-10, 10, (12, 10)).astype("int32")
np_input5 = np.random.uniform(-10, 10, (12, 10)).astype("int64")
np_out1 = np.sign(np_input1)
np_out2 = np.sign(np_input2)
np_out3 = np.sign(np_input3)
np_out4 = np.sign(np_input4)
np_out5 = np.sign(np_input5)
def run(place):
with paddle.static.program_guard(
paddle.static.Program(), paddle.static.Program()
):
# The input type of sign_op must be Variable or numpy.ndarray.
input1 = 12
self.assertRaises(TypeError, paddle.tensor.math.sign, input1)
# The result of sign_op must correct.
input1 = paddle.static.data(
name='input1', shape=[12, 10], dtype="int8"
)
input2 = paddle.static.data(
name='input2', shape=[12, 10], dtype="uint8"
)
input3 = paddle.static.data(
name='input3', shape=[12, 10], dtype="int16"
)
input4 = paddle.static.data(
name='input4', shape=[12, 10], dtype="int32"
)
input5 = paddle.static.data(
name='input5', shape=[12, 10], dtype="int64"
)
out1 = paddle.sign(input1)
out2 = paddle.sign(input2)
out3 = paddle.sign(input3)
out4 = paddle.sign(input4)
out5 = paddle.sign(input5)
exe = paddle.static.Executor(place)
res1, res2, res3, res4, res5 = exe.run(
paddle.static.default_main_program(),
feed={
"input1": np_input1,
"input2": np_input2,
"input3": np_input3,
"input4": np_input4,
"input5": np_input5,
},
fetch_list=[out1, out2, out3, out4, out5],
)
self.assertEqual((res1 == np_out1).all(), True)
self.assertEqual((res2 == np_out2).all(), True)
self.assertEqual((res3 == np_out3).all(), True)
self.assertEqual((res4 == np_out4).all(), True)
self.assertEqual((res5 == np_out5).all(), True)
if core.is_compiled_with_cuda() or is_custom_device():
input6 = paddle.static.data(
name='input6', shape=[-1, 4], dtype="float16"
)
paddle.sign(input6)
for place in self.place:
run(place)
class TestSignComplexAPI(TestSignAPI):
def setUp(self):
self.place = get_places()
def test_dygraph(self):
with base.dygraph.guard():
np_x = np.array(
[-1.0 + 1.0j, 0.0 + 0.0j, 3.0 - 0.0j, 1.2 + 0.0j, 1.5 + 3.0j],
dtype='complex64',
)
x = paddle.to_tensor(np_x)
z = paddle.sign(x)
np_z = z.numpy()
z_expected = complex_sign(np_x)
np.testing.assert_allclose(np_z, z_expected, atol=1e-5, rtol=1e-5)
def test_static(self):
real_part = np.random.uniform(-10, 10, (10, 10))
imag_part = np.random.uniform(-10, 10, (10, 10))
np_input1 = (real_part + 1j * imag_part).astype("complex64")
np_input2 = (real_part + 1j * imag_part).astype("complex128")
np_out1 = complex_sign(np_input1)
np_out2 = complex_sign(np_input2)
def run(place):
with paddle.static.program_guard(
paddle.static.Program(), paddle.static.Program()
):
# The input type of sign_op must be Variable or numpy.ndarray.
input1 = 12
self.assertRaises(TypeError, paddle.tensor.math.sign, input1)
# The result of sign_op must correct.
input1 = paddle.static.data(
name='input1', shape=[12, 10], dtype="complex64"
)
input2 = paddle.static.data(
name='input2', shape=[12, 10], dtype="complex128"
)
out1 = paddle.sign(input1)
out2 = paddle.sign(input2)
exe = paddle.static.Executor(place)
res1, res2 = exe.run(
paddle.static.default_main_program(),
feed={
"input1": np_input1,
"input2": np_input2,
},
fetch_list=[out1, out2],
)
np.testing.assert_allclose(res1, np_out1, atol=1e-5, rtol=1e-5)
np.testing.assert_allclose(res2, np_out2, atol=1e-5, rtol=1e-5)
for place in self.place:
run(place)
class TestSignDoubleGradCheck(unittest.TestCase):
def sign_wrapper(self, x):
return paddle.sign(x[0])
@prog_scope()
def func(self, place):
# the shape of input variable should be clearly specified, not include -1.
eps = 0.005
dtype = np.float32
data = paddle.static.data('data', [1, 4], dtype)
data.persistable = True
out = paddle.sign(data)
data_arr = np.random.uniform(-1, 1, data.shape).astype(dtype)
gradient_checker.double_grad_check(
[data], out, x_init=[data_arr], place=place, eps=eps
)
gradient_checker.double_grad_check_for_dygraph(
self.sign_wrapper, [data], out, x_init=[data_arr], place=place
)
def test_grad(self):
paddle.enable_static()
for p in get_places():
self.func(p)
class TestSignTripleGradCheck(unittest.TestCase):
def sign_wrapper(self, x):
return paddle.sign(x[0])
@prog_scope()
def func(self, place):
# the shape of input variable should be clearly specified, not include -1.
eps = 0.005
dtype = np.float32
data = paddle.static.data('data', [1, 4], dtype)
data.persistable = True
out = paddle.sign(data)
data_arr = np.random.uniform(-1, 1, data.shape).astype(dtype)
gradient_checker.triple_grad_check(
[data], out, x_init=[data_arr], place=place, eps=eps
)
gradient_checker.triple_grad_check_for_dygraph(
self.sign_wrapper, [data], out, x_init=[data_arr], place=place
)
def test_grad(self):
paddle.enable_static()
for p in get_places():
self.func(p)
class TestSignOutAndParamDecorator(unittest.TestCase):
def setUp(self):
paddle.disable_static()
self.x_np = np.random.randn(3, 4).astype(np.float32)
self.x_np[self.x_np == 0] = 1 # Avoid zero for gradient check
self.test_types = ["decorator", "out", "out_decorator"]
def do_test(self, test_type):
x = paddle.to_tensor(self.x_np, stop_gradient=False)
if test_type == 'raw':
result = paddle.sign(x)
result.mean().backward()
return result, x.grad
elif test_type == 'decorator':
result = paddle.sign(input=x)
result.mean().backward()
return result, x.grad
elif test_type == 'out':
out = paddle.empty_like(x)
out.stop_gradient = False
paddle.sign(x, out=out)
out.mean().backward()
return out, x.grad
elif test_type == 'out_decorator':
out = paddle.empty_like(x)
out.stop_gradient = False
paddle.sign(input=x, out=out)
out.mean().backward()
return out, x.grad
else:
raise ValueError(f"Unknown test type: {test_type}")
def test_all(self):
out_std, grad_std = self.do_test('raw')
for test_type in self.test_types:
out, grad = self.do_test(test_type)
np.testing.assert_allclose(out.numpy(), out_std.numpy(), rtol=1e-20)
np.testing.assert_allclose(
grad.numpy(), grad_std.numpy(), rtol=1e-20
)
if __name__ == "__main__":
paddle.enable_static()
unittest.main()