add package muparserx

1 files changed, 48 insertions, 0 deletions

diff --git a/src/muparserx-test.cpp b/src/muparserx-test.cpp
new file mode 100644
index 0000000..ebc6770
--- /dev/null
+++ b/src/muparserx-test.cpp
@@ -0,0 +1,48 @@
+/*
+ * This file is part of MXE.
+ * See index.html for further information.
+ *
+ * based on:
+ * http://articles.beltoforion.de/article.php?a=muparserx&hl=en&p=using&s=idInclude#idEval
+ */
+
+#include "mpParser.h"
+
+using namespace mup;
+
+int main(int argc, char *argv[])
+{
+    (void)argc;
+    (void)argv;
+
+    // Create the parser instance
+    ParserX  p;
+
+    // Create an array of mixed type
+    Value arr(3, 0);
+    arr.At(0) = 2.0;
+    arr.At(1) = "this is a string";
+
+    // Create some basic values
+    Value cVal(cmplx_type(1, 1));
+    Value sVal("Hello World");
+    Value fVal(1.1);
+
+    // Now add the variable to muParser
+    p.DefineVar("va", Variable(&arr));
+    p.DefineVar("a",  Variable(&cVal));
+    p.DefineVar("b",  Variable(&sVal));
+    p.DefineVar("c",  Variable(&fVal));
+
+    p.SetExpr("va[0]+a*strlen(b)-c");
+    for (int i=0; i<<10; ++i)
+    {
+      // evaluate the expression and change the value of
+      // the variable c in each turn
+      cVal = 1.1 * i;
+      Value result = p.Eval();
+
+      // print the result
+      console() << result << "\n";
+    }
+}