From bb862b82d54bc3c29e905179035e8839742f1ea9 Mon Sep 17 00:00:00 2001
From: Martin Kroeker <martin@ruby.chemie.uni-freiburg.de>
Date: Thu, 29 Jun 2023 23:59:25 +0200
Subject: [PATCH] Fix integer overflow in multithreading threshold calculation
 for SYMM/SYRK (#4116)

* Fix potential integer overflow
---
 interface/symm.c | 4 ++--
 interface/syrk.c | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/interface/symm.c b/interface/symm.c
index 3e65e69b1..3e6e0fd48 100644
--- a/interface/symm.c
+++ b/interface/symm.c
@@ -166,7 +166,7 @@ void NAME(char *SIDE, char *UPLO,
   int nodes;
 #endif
 # if defined(SMP)
-  int MN;
+  double MN;
 #endif
   blasint info;
   int side;
@@ -264,7 +264,7 @@ void CNAME(enum CBLAS_ORDER order, enum CBLAS_SIDE Side, enum CBLAS_UPLO Uplo,
   int nodes;
 #endif
 #if defined(SMP)
-  int MN;
+  double MN;
 #endif
 
   PRINT_DEBUG_CNAME;
diff --git a/interface/syrk.c b/interface/syrk.c
index 3b056aec8..69f2328a4 100644
--- a/interface/syrk.c
+++ b/interface/syrk.c
@@ -107,7 +107,7 @@ void NAME(char *UPLO, char *TRANS,
   FLOAT *sa, *sb;
 
 #ifdef SMP
-  int NNK;
+  double NNK;
 #ifdef USE_SIMPLE_THREADED_LEVEL3
 #ifndef COMPLEX
 #ifdef XDOUBLE
@@ -232,7 +232,7 @@ void CNAME(enum CBLAS_ORDER order, enum CBLAS_UPLO Uplo, enum CBLAS_TRANSPOSE Tr
   FLOAT *sa, *sb;
 
 #ifdef SMP
-int NNK;
+double NNK;
 
 #ifdef USE_SIMPLE_THREADED_LEVEL3
 #ifndef COMPLEX