From e26d42a906852250b7e054aca445881d7ddb4159 Mon Sep 17 00:00:00 2001
From: dyzheng <zhengdy@bjaisi.com>
Date: Thu, 26 Mar 2026 22:53:19 +0800
Subject: [PATCH] Refactor: Replace magic number and C-style cast in sto_wf.cpp

---
 source/source_pw/module_stodft/sto_wf.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/source/source_pw/module_stodft/sto_wf.cpp b/source/source_pw/module_stodft/sto_wf.cpp
index e844503a11..3f0438496a 100644
--- a/source/source_pw/module_stodft/sto_wf.cpp
+++ b/source/source_pw/module_stodft/sto_wf.cpp
@@ -66,13 +66,15 @@ void Stochastic_WF<T, Device>::clean_chiallorder()
 template <typename T, typename Device>
 void Stochastic_WF<T, Device>::init_sto_orbitals(const int seed_in)
 {
+       const unsigned int RANK_SEED_FACTOR = 10000; // 用于区分不同进程/组的随机种子偏移量
+
     if (seed_in == 0 || seed_in == -1)
     {
-        srand((unsigned)time(nullptr) + GlobalV::MY_RANK * 10000); // GlobalV global variables are reserved
+        srand(static_cast<unsigned>(time(nullptr)) + GlobalV::MY_RANK * RANK_SEED_FACTOR);
     }
     else
     {
-        srand((unsigned)std::abs(seed_in) + (GlobalV::MY_BNDGROUP * GlobalV::NPROC_IN_BNDGROUP + GlobalV::RANK_IN_BPGROUP) * 10000);
+        srand(static_cast<unsigned>(std::abs(seed_in)) + (GlobalV::MY_BNDGROUP * GlobalV::NPROC_IN_BNDGROUP + GlobalV::RANK_IN_BPGROUP) * RANK_SEED_FACTOR);
     }
 
     this->allocate_chi0();