// * && /
static TreeNode *
_term(void) {
TreeNode *t = _factor();
while (token == TIMES || token == OVER) {
TreeNode *q = new_exp_node(OpK);
if (q != NULL) {
q->child[0] = t;
q->attr.op = token;
t = q;
_match(token);
t->child[1] = _factor();
}
}
return t;
}
vector<pll> factorG(long long n){
top=0;
_factor(n);
vector<pll> d;
for(int i=0;i<top;++i)d.pb(pll(stk_p[i],stk_k[i]));
return d;
}
int Parser::_term()
{
int value = _factor();
TokenType t = _token();
while (_success && (t == TT_MULT || t == TT_DIV)) {
_scanner.advance();
switch (t) {
case TT_MULT: value *= _factor(); break;
case TT_DIV: value /= _factor(); break;
default:
notifyListeners("ERROR: Unknown error");
_success = false;
return 0;
}
t = _token();
}
return value;
}
double WidgetCalc::_term(const std::string& str, unsigned *idx)
{
double result = _factor(str, idx);
double div;
while (str[*idx] == '*' || str[*idx] == '/')
{
switch (str[*idx])
{
case '*':
++*idx;
result *= _factor(str, idx);
break;
case '/':
++*idx;
div = _factor(str, idx);
if (div != 0.0)
{
result /= div;
}
else
{
Logger::warning( "!!! WARNING: Division by zero!");
return 0;
}
break;
}
}
return result;
}
double WidgetCalc::_factor(const std::string& str, unsigned *idx)
{
double result;
int sign = 1;
if (str[*idx] == '-')
{
sign = -1;
++*idx;
}
if (str[*idx] == '(')
{
++*idx;
result = _expr(str, idx);
if (str[*idx] != ')')
{
Logger::warning( "!!! WARNING: Brackets unbalanced!");
return 0;
}
++*idx;
}
else
result = _number(str, idx);
if (str[*idx] == '^')
{
++*idx;
result = pow(result, _factor(str, idx));
}
return sign * result;
}
void factor(double fx, double fy)
{
_factor((int) (fx * SCALE + 0.5), (int) (fy * SCALE + 0.5), SCALE);
}
