bool EXParser::evaluateFunction(std::string &_expression, const int index, EXFunctionSet::iterator fiter)
{
std::string paramExpression = isolateParenthesisExpression(_expression, index);
size_t expressionLen = paramExpression.length();
if(expressionLen == 0){
mErrorStr = "function parameter error";
return false;
}
if(!priorityLoop(paramExpression))
return false;
double value = fiter->second((double)atof(paramExpression.c_str()));
if(isInf(value)){
mErrorStr = "infinity error";
return false;
}
if(isNan(value)){
mErrorStr = "not a number error";
return false;
}
steps.push_back(EXSolveStep(fiter->first+"("+paramExpression+") -> "+dblToStr(value), ""));
_expression.replace(index-fiter->first.length(), fiter->first.length()+expressionLen+2, dblToStr(value));
return true;
}
void EXParser::evaluateFunction(std::string &_expression, const int index, EXFunctionSet::iterator fiter)
{
std::string paramExpression = isolateParenthesisExpression(_expression, index);
size_t expressionLen = paramExpression.length();
if(expressionLen == 0){
throw EXError("function_parameter_error", ErrorIndex::FUNCTION_PARAMETER_ERROR);
}
priorityLoop(paramExpression);
double value = fiter->second((double)atof(paramExpression.c_str()));
if(isInf(value)){
throw EXError("infinity_error", ErrorIndex::INFINITY_ERROR);
}
if(isNan(value)){
throw EXError("not_a_number", ErrorIndex::NAN_ERROR);
}
steps.push_back(EXSolveStep(fiter->first+"("+paramExpression+") -> "+dblToStr(value), ""));
_expression.replace(index-fiter->first.length(), fiter->first.length()+expressionLen+2, dblToStr(value));
}