libMesh
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Functions
fparser_parse.C File Reference

Go to the source code of this file.

Functions

int main (int argc, char **argv)
 

Function Documentation

◆ main()

int main ( int  argc,
char **  argv 
)

Definition at line 28 of file fparser_parse.C.

29{
30 using namespace libMesh;
31
32 libmesh_error_msg_if(argc < 2, "Usage: " << argv[0] << " function_to_eval [x] [y] [z] [t]");
33
34 std::string function_string = argv[1];
35
36 ParsedFunction<> func(function_string);
37
38 const Point p ( (argc > 2) ? std::atof(argv[2]) : 0.0,
39 (argc > 3) ? std::atof(argv[3]) : 0.0,
40 (argc > 4) ? std::atof(argv[4]) : 0.0 );
41
42 const libMesh::Real t = (argc > 5) ? std::atof(argv[5]) : 0.0;
43
44 const libMesh::Number out = func(p,t);
45
46 libMesh::out << "out = " << out << std::endl;
47
48 return 0;
49}
A Function generated (via FParser) by parsing a mathematical expression.
A Point defines a location in LIBMESH_DIM dimensional Real space.
Definition point.h:40
The libMesh namespace provides an interface to certain functionality in the library.
OStreamProxy out
DIE A HORRIBLE DEATH HERE typedef LIBMESH_DEFAULT_SCALAR_TYPE Real

References main(), libMesh::out, and libMesh::Real.