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C++ Mathematical Expression Library (ExprTk) http://www.partow.net/programming/exprtk/index.html

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This commit is contained in:
Arash Partow
2012-04-25 18:47:46 +10:00
parent a60b7646c1
commit 437632dbdb
3 changed files with 297 additions and 5 deletions
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70
exprtk_test.cpp
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@ -849,12 +849,14 @@ struct test_ab
: expr(e),
a(v0),
b(v1),
c("ccc"),
result(r)
{}
std::string expr;
std::string a;
std::string b;
std::string c;
T result;
};
@ -880,6 +882,7 @@ inline bool run_test02()
test_ab<T>("'a123b' like '*123?'" ,"","",T(1.0)),
test_ab<T>("'1XYZ2' ilike '*xyz*'" ,"","",T(1.0)),
test_ab<T>("'1XYZ2' ilike '*xyz?'" ,"","",T(1.0)),
test_ab<T>("inrange('aaa','bbb','ccc')" ,"","",T(1.0)),
test_ab<T>("a == b" ,"aaa","aaa",T(1.0)),
test_ab<T>("a != b" ,"aaa","bbb",T(1.0)),
test_ab<T>("a < b" ,"aaa","bbb",T(1.0)),
@ -913,6 +916,11 @@ inline bool run_test02()
test_ab<T>("a ilike '*xyz?'" ,"1XYZ2","",T(1.0)),
test_ab<T>("'1XYZ2' ilike b" ,"","*xyz*",T(1.0)),
test_ab<T>("'1XYZ2' ilike b" ,"","*xyz?",T(1.0)),
test_ab<T>("inrange(a,'bbb',c)" ,"aaa","bbb",T(1.0)),
test_ab<T>("inrange('aaa',b,'ccc')" ,"aaa","bbb",T(1.0)),
test_ab<T>("inrange(a,b,c)" ,"aaa","bbb",T(1.0)),
test_ab<T>("inrange(a,b,'ccc')" ,"aaa","bbb",T(1.0)),
test_ab<T>("inrange('aaa',b,c)" ,"aaa","bbb",T(1.0)),
};
@ -928,6 +936,7 @@ inline bool run_test02()
exprtk::symbol_table<T> symbol_table;
symbol_table.add_stringvar("a",test.a);
symbol_table.add_stringvar("b",test.b);
symbol_table.add_stringvar("c",test.c);
exprtk::expression<T> expression;
expression.register_symbol_table(symbol_table);
@ -1268,6 +1277,7 @@ inline bool run_test08()
"(3min(x,y))==(3*min(x,y))",
"(sin(x)y)==(sin(x)*y)",
"(sin(x)cos(y)+1)==(sin(x)*cos(y)+1)",
"(sgn(sin(x))cos(sgn(y))+1)==(sgn(sin(x))*cos(sgn(y))+1)",
"equal($f00(x,y,z),((x+y)/z))",
"equal($f01(x,y,z),((x+y)*z))",
"equal($f02(x,y,z),((x-y)/z))",
@ -1828,6 +1838,63 @@ inline bool run_test10()
return true;
}
template <typename T>
inline bool run_test11()
{
typedef exprtk::expression<T> expression_t;
std::string expression_string = "(x + y) / 3";
T x = T(1.0);
T y = T(2.0);
exprtk::symbol_table<T> symbol_table;
symbol_table.add_variable("x",x);
symbol_table.add_variable("y",y);
expression_t expression;
expression.register_symbol_table(symbol_table);
static const std::size_t rounds = 100000;
for (std::size_t i = 0; i < rounds; ++i)
{
{
exprtk::parser<T> parser;
if (!parser.compile(expression_string,expression))
{
std::cout << "run_test11() - Error: " << parser.error() << "\tExpression: " << expression_string << std::endl;
return false;
}
}
if (not_equal<T>(expression.value(),(x + y)/T(3.0),0.000001))
{
printf("run_test11() - Error in evaluation!(1)\n");
return false;
}
expression.release();
T result2 = expression.value();
if (result2 == result2)
{
printf("run_test11() - Error in evaluation!(2)\n");
return false;
}
{
exprtk::parser<T> parser;
if (!parser.compile(expression_string,expression))
{
std::cout << "run_test11() - Error: " << parser.error() << "\tExpression: " << expression_string << std::endl;
return false;
}
}
if (not_equal<T>(expression.value(),(x + y)/T(3.0),0.000001))
{
printf("run_test11() - Error in evaluation!(3)\n");
return false;
}
}
return true;
}
int main()
{
return (
@ -1841,7 +1908,8 @@ int main()
run_test07<double>() &&
run_test08<double>() &&
run_test09<double>() &&
run_test10<double>()
run_test10<double>() &&
run_test11<double>()
)
? 0 : 1;
}