From a77b529928b0f5b65a340de6c5aeb29d7eccdf84 Mon Sep 17 00:00:00 2001
From: Holger Vogt <holger.vogt@uni-due.de>
Date: Fri, 29 Jan 2021 10:44:28 +0100
Subject: [PATCH] set the locale to "C" locally, if shared ngspice

---
 src/frontend/plotting/gnuplot.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/frontend/plotting/gnuplot.c b/src/frontend/plotting/gnuplot.c
index b3908d7b7..ca8e192c4 100644
--- a/src/frontend/plotting/gnuplot.c
+++ b/src/frontend/plotting/gnuplot.c
@@ -21,6 +21,7 @@
 #else
 #include <unistd.h>
 #endif
+#include <locale.h>
 
 #define GP_MAXVECTORS 64
 
@@ -66,6 +67,11 @@ void ft_gnuplot(double *xlims, double *ylims,
     char filename_data[128];
     char filename_plt[128];
 
+#ifdef SHARED_MODULE
+    char* llocale = setlocale(LC_NUMERIC, NULL);
+    setlocale(LC_NUMERIC, "C");
+#endif
+
     snprintf(filename_data, 128, "%s.data", filename);
     snprintf(filename_plt, 128, "%s.plt", filename);
 
@@ -404,6 +410,10 @@ void ft_gnuplot(double *xlims, double *ylims,
             perror(NULL);
         }
     }
+#ifdef SHARED_MODULE
+    /* go back to what it was before */
+    setlocale(LC_NUMERIC, llocale);
+#endif
 }