From: Pengfei Jia <pengfej@clemson.edu>
Date: Tue, 7 Feb 2023 17:17:31 +0000 (-0500)
Subject: Fixing random number generator function parser
X-Git-Tag: v9.5.0-rc1~579^2~3
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=58a01419fcbdf6956624966ccb15f6f02a43b149;p=dealii.git

Fixing random number generator function parser
---

diff --git a/source/base/mu_parser_internal.cc b/source/base/mu_parser_internal.cc
index 463d5a5287..eb3173f5cb 100644
--- a/source/base/mu_parser_internal.cc
+++ b/source/base/mu_parser_internal.cc
@@ -308,8 +308,10 @@ namespace internal
           parser.DefineFun("log", mu_log, true);
           parser.DefineFun("pow", mu_pow, true);
           parser.DefineFun("erfc", mu_erfc, true);
-          parser.DefineFun("rand_seed", mu_rand_seed, true);
-          parser.DefineFun("rand", mu_rand, true);
+          // We need to set optimized=false, because rand will generate
+          // different number every time.
+          parser.DefineFun("rand_seed", mu_rand_seed, false);
+          parser.DefineFun("rand", mu_rand, false);
 
           try
             {