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//# tFuncExpression.cc: This program test the functional run-time expressions
//# Copyright (C) 2000,2002
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This program is free software; you can redistribute it and/or modify it
//# under the terms of the GNU General Public License as published by the Free
//# Software Foundation; either version 2 of the License, or (at your option)
//# any later version.
//#
//# This program is distributed in the hope that it will be useful, but WITHOUT
//# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
//# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
//# more details.
//#
//# You should have received a copy of the GNU General Public License along
//# with this program; if not, write to the Free Software Foundation, Inc.,
//# 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: casa-feedback@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
//# Includes
#include <casacore/scimath/Mathematics/AutoDiff.h>
#include <casacore/scimath/Mathematics/AutoDiffMath.h>
#include <casacore/scimath/Functionals/FuncExpression.h>
#include <casacore/scimath/Functionals/FuncExprData.h>
#include <casacore/scimath/Functionals/CompiledFunction.h>
#include <casacore/casa/Exceptions/Error.h>
#include <casacore/scimath/Mathematics/AutoDiffIO.h>
#include <casacore/casa/BasicSL/String.h>
#include <casacore/casa/iostream.h>
#include <casacore/casa/namespace.h>
int main() {
try {
cout << "------------ test functional expressions ------------" << endl;
cout << "--- Check base -----" << endl;
// Make an operator base
FuncExprData base;
cout << base << endl;
cout << "--- Check expression syntax ----" << endl;
const uInt n=27;
String exprlist[n] = {
String("+-(25*30+2)--(75+2)"),
String("1+2-3"),
String("1+2/3"),
String("2^2^3"),
String("1+(2+3"),
String("1"),
String(""),
String("pi"),
String("sin(1)"),
String("cop(1)"),
String("pi(2)+1.5"),
String("sin(1,2)"),
String("2*p"),
String("2*p1"),
String("2*p[1]"),
String("2*x0"),
String("sin(sin(2))"),
String("x==0"),
String("(x==0)+1"),
String("(x==0)+1"),
String("((x==0) * 1)+((x!=0) * sin(x+(x==0)*1)/(x+(1)))"),
String("1+(1==2)?5:8+20"),
String("1+(2==2)?5:(8+20)"),
String("1+((1==2)?5:8)+20"),
String("1+((2==2)?5:(8+20))"),
String("erf(1)"),
String("erfc(1)")
};
for (uInt i=0; i<n; ++i) {
FuncExpression expr;
String myexpr = exprlist[i];
cout << "Expression: '" << myexpr << "'" << endl;
if (!expr.create(myexpr)) {
cout << expr.errorMessage() << endl;
}
cout << expr;
Double res;
cout << "Value: ";
if (!expr.exec(res)) {
cout << expr.errorMessage() << endl;
} else cout << res << endl;
cout << "----------------------------------------------------" << endl;
}
for (uInt i=0; i<n; ++i) {
CompiledFunction<Double> expr;
String myexpr = exprlist[i];
cout << "Expression: '" << myexpr << "'" << endl;
if (!expr.setFunction(myexpr)) {
cout << expr.errorMessage() << endl;
}
if (expr.nparameters() > 0) expr[0] = 1.5;
if (expr.nparameters() > 1) expr[1] = 2.5;
cout << "Value(3.5, 0): ";
cout << expr(3.5) << ", " << expr(0.0) << endl;
cout << "----------------------------------------------------" << endl;
}
for (uInt i=0; i<n; ++i) {
CompiledFunction<AutoDiff<Double> > expr;
String myexpr = exprlist[i];
cout << "Expression: '" << myexpr << "'" << endl;
if (!expr.setFunction(myexpr)) {
cout << expr.errorMessage() << endl;
}
if (expr.nparameters() > 0) {
expr[0] = AutoDiff<Double>(1.5, expr.nparameters(), 0);
}
if (expr.nparameters() > 1) {
expr[1] = AutoDiff<Double>(2.5, expr.nparameters(), 1);
}
cout << "Value(3.5, 0): ";
cout << expr(3.5) << ", " << expr(0.0) << endl;
cout << "----------------------------------------------------" << endl;
}
} catch (std::exception& x) {
cerr << x.what() << endl;
cout << "FAIL" << endl;
return 1;
}
catch (...) {
cerr << "Exception not derived from AipsError" << endl;
cout << "FAIL" << endl;
return 2;
}
}
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