From d91faf2997754bd8beed4529d6b680a796e24fad Mon Sep 17 00:00:00 2001
From: furnace <34057289+windstamp@users.noreply.github.com>
Date: Wed, 7 Apr 2021 19:25:32 +0800
Subject: [PATCH] bugfix for unit test test_segment_ops (#32116)

---
 paddle/fluid/platform/cuda_primitives.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/paddle/fluid/platform/cuda_primitives.h b/paddle/fluid/platform/cuda_primitives.h
index 340372007a7..94f64d158af 100644
--- a/paddle/fluid/platform/cuda_primitives.h
+++ b/paddle/fluid/platform/cuda_primitives.h
@@ -200,6 +200,8 @@ CUDA_ATOMIC_WRAPPER(Max, float) {
 
     old = atomicCAS(address_as_i, assumed, __float_as_int(val));
   } while (assumed != old);
+
+  return __int_as_float(old);
 }
 
 CUDA_ATOMIC_WRAPPER(Max, double) {
@@ -219,6 +221,8 @@ CUDA_ATOMIC_WRAPPER(Max, double) {
 
     old = atomicCAS(address_as_ull, assumed, __double_as_longlong(val));
   } while (assumed != old);
+
+  return __longlong_as_double(old);
 }
 
 // For atomicMin
@@ -272,6 +276,8 @@ CUDA_ATOMIC_WRAPPER(Min, float) {
 
     old = atomicCAS(address_as_i, assumed, __float_as_int(val));
   } while (assumed != old);
+
+  return __int_as_float(old);
 }
 
 CUDA_ATOMIC_WRAPPER(Min, double) {
@@ -291,6 +297,8 @@ CUDA_ATOMIC_WRAPPER(Min, double) {
 
     old = atomicCAS(address_as_ull, assumed, __double_as_longlong(val));
   } while (assumed != old);
+
+  return __longlong_as_double(old);
 }
 
 }  // namespace platform
-- 
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