【Hackathon 5th No.13】【关联 PR】Added int8 support for less_than

Author: jjyaoao

paddle/phi/kernels/cpu/compare_kernel.cc

@@ -110,6 +110,7 @@ PD_REGISTER_KERNEL(equal_all,
                      ALL_LAYOUT,                          \
                      phi::func##Kernel,                   \
                      bool,                                \
+                     int8_t,                              \
                      int16_t,                             \
                      int,                                 \
                      int64_t,                             \

paddle/phi/kernels/kps/compare_kernel.cu

@@ -160,11 +160,29 @@ PD_REGISTER_KERNEL(equal_all,
     kernel->OutputAt(0).SetDataType(phi::DataType::BOOL); \
   }
 
-PD_REGISTER_COMPARE_KERNEL(less_than, LessThan)
 PD_REGISTER_COMPARE_KERNEL(less_equal, LessEqual)
 PD_REGISTER_COMPARE_KERNEL(greater_than, GreaterThan)
 PD_REGISTER_COMPARE_KERNEL(greater_equal, GreaterEqual)
 PD_REGISTER_COMPARE_KERNEL(equal, Equal)
 PD_REGISTER_COMPARE_KERNEL(not_equal, NotEqual)
 
+#define PD_REGISTER_LESS_THAN_KERNEL(func)                \
+  PD_REGISTER_KERNEL(less_than,                           \
+                     KPS,                                 \
+                     ALL_LAYOUT,                          \
+                     phi::func##Kernel,                   \
+                     bool,                                \
+                     int8_t,                              \
+                     int16_t,                             \
+                     int,                                 \
+                     int64_t,                             \
+                     float,                               \
+                     double,                              \
+                     phi::dtype::float16,                 \
+                     phi::dtype::bfloat16) {              \
+    kernel->OutputAt(0).SetDataType(phi::DataType::BOOL); \
+  }
+
+PD_REGISTER_COMPARE_KERNEL(less_than, LessThan)
+
 #endif

python/paddle/tensor/logic.py

@@ -907,6 +907,7 @@ def less_than(x, y, name=None):
                 "float16",
                 "float32",
                 "float64",
+                "int8",
                 "int32",
                 "int64",
                 "uint16",
@@ -921,6 +922,7 @@ def less_than(x, y, name=None):
                 "float16",
                 "float32",
                 "float64",
+                "int8",
                 "int32",
                 "int64",
                 "uint16",

test/legacy_test/test_compare_op.py

@@ -614,7 +614,21 @@ def test_place_2(self):
         result = data_tensor == 0
         self.assertEqual((result.numpy() == np.array([False])).all(), True)
 
+class TestLessThanInt8(unittest.TestCase):
+
+    def test_less_than_int8(self):
+        # Create a tensor of type int8
+        x = paddle.to_tensor([1, 2, 3], dtype='int8')
+        y = paddle.to_tensor([1, 3, 2], dtype='int8')
+
+        result = paddle.less_than(x, y)
+        
+        # desired output
+        expected = np.array([False, True, False])
+
+        # Verify output
+        self.assertTrue((result.numpy() == expected).all())
 
 if __name__ == '__main__':
     paddle.enable_static()
-    unittest.main()
+    unittest.main()