From 8eafbc8fb9f86e6e1975bc611ac4bc4367cc1312 Mon Sep 17 00:00:00 2001
From: zhaodezan <zhaodezan@huawei.com>
Date: Wed, 12 Aug 2020 05:52:18 -0400
Subject: [PATCH] using qsort function correctly

---
 .../lite/src/runtime/kernel/arm/nnacl/fp32/arg_min_max.cc  | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/mindspore/lite/src/runtime/kernel/arm/nnacl/fp32/arg_min_max.cc b/mindspore/lite/src/runtime/kernel/arm/nnacl/fp32/arg_min_max.cc
index b10ba90a8c..ff34c184a3 100644
--- a/mindspore/lite/src/runtime/kernel/arm/nnacl/fp32/arg_min_max.cc
+++ b/mindspore/lite/src/runtime/kernel/arm/nnacl/fp32/arg_min_max.cc
@@ -23,8 +23,11 @@ int ArgCompareAscFp32(const void *a, const void *b) {
 }
 
 int ArgCompareDescFp32(const void *a, const void *b) {
-  return reinterpret_cast<const ArgElement *>(b)->data_.f_data_
-    - reinterpret_cast<const ArgElement *>(a)->data_.f_data_;
+  // cmp funtion of qsort must return int type
+  auto b_value = reinterpret_cast<const ArgElement *>(b)->data_.f_data_;
+  auto a_value = reinterpret_cast<const ArgElement *>(a)->data_.f_data_;
+  int res = b_value > a_value ? 1 : -1;
+  return res;
 }
 
 void ArgMaxDim0OutValue(const float *input, float *output, const int *in_shape, ArgMinMaxParameter *param) {