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-rw-r--r--utests/utest_helper.hpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/utests/utest_helper.hpp b/utests/utest_helper.hpp
index 5d8e835c..6d097662 100644
--- a/utests/utest_helper.hpp
+++ b/utests/utest_helper.hpp
@@ -231,7 +231,7 @@ extern float cl_FLT_ULP(float float_number);
extern int cl_INT_ULP(int int_number);
/* subtract the time */
-int time_subtract(struct timeval *y, struct timeval *x, struct timeval *result);
+double time_subtract(struct timeval *y, struct timeval *x, struct timeval *result);
#endif /* __UTEST_HELPER_HPP__ */