3 #include <ginac/ginac.h>
9 * Demonstrates the use of link_ex.
11 * When run for the first time link_ex will fail. This is a rude way of
12 * checking whether the needed .so file is available. The .so is then created
13 * by compile_ex using the filename parameter. When run again link_ex will use
14 * the existing .so file.
21 link_ex("compile3_testprg.so", fp);
22 cout << "Using existing 'compile3_testprg.so'." << endl;
24 catch (const std::exception& e) {
25 // hope the exception is just raised because of missing 'compile2_testprg.so' file,
26 // so being lazy no error management here ...
27 cout << "Error: " << e.what() << endl;
28 cout << "Building new 'compile3_testprg.so'." << endl;
32 // Optionally, compile with custom compiler flags:
33 // setenv("CXXFLAGS", "-O3 -fomit-frame-pointer -ffast-math", 1);
34 compile_ex(expr, a, b, fp, "compile3_testprg");
37 cout << "result of 2.3*1.5 is " << fp(2.3, 1.5) << endl;