修改返回的时间的单位，由ns转为s

2 years ago · 7bdc86dc82
1 changed files with 1 additions and 1 deletions
--- a/utils.h
+++ b/utils.h
@ -16,7 +16,7 @@ namespace utils{
            end = std::chrono::high_resolution_clock::now();
        }
        double cost(){
-            return std::chrono::duration_cast<std::chrono::nanoseconds>(end-start).count();
+            return double( std::chrono::duration_cast<std::chrono::nanoseconds>(end-start).count())/1000000000.0;
        }
    private: