inline
bool form3(int a, int b, int c, int d, int op1, int op2, int op3) {
// (a op1 b) op2 (c op3 d)
if (a > b && swapable(op1))
return false;
if (c > d && swapable(op3))
return false;
bool div_zero = false;
double r = eval(op2, eval(op1, a, b, &div_zero), eval(op3, c, d, &div_zero), &div_zero);
if (!div_zero && eq(r, 24)) {
fprintf(stdout, "(%d %c %d) %c (%d %c %d)\n", a, char(op1), b, char(op2), c, char(op3), d);
return true;
}
return false;
}
inline
bool form4(int a, int b, int c, int d, int op1, int op2, int op3) {
// a op1 ((b op2 c) op3 d)
if (b > c && swapable(op2))
return false;
// already covered by form1 in this case
if (swapable(op1))
return false;
bool div_zero = false;
double r = eval(op1, a, eval(op3, eval(op2, b, c, &div_zero), d, &div_zero), &div_zero);
if (!div_zero && eq(r, 24)) {
fprintf(stdout, "%d %c ((%d %c %d) %c %d)\n", a, char(op1), b, char(op2), c, char(op3), d);
return true;
}
return false;
}
void Field::swap(int x1, int y1, int x2, int y2) {
if (DEBUGIT_FIELDSWAP) logfile << "Field::swap " << x1 << " " << y1 << " " << x2 << " " << y2 << std::endl;
int w = getwidth();
int idx1 = y1*w+x1;
int idx2 = y2*w+x2;
Block *Block1 = this->blocks[idx1];
Block *Block2 = this->blocks[idx2];
if ((!Block1 && !Block2) || !(swapable(x1,y1) && swapable(x2,y2))) return;
if (!Block1 && Block2) {
if (DEBUGIT_FIELDSWAP) logfile << "Field::swap We're moving a block from left to right, right space is currently empty." << std::endl;
this->swapStack->swap(Block2, x2,y2,x1,y1, 1, this);
} else if (Block1 && !Block2) {
if (DEBUGIT_FIELDSWAP) logfile << "Field::swap We're moving a block from right to left, left space is currently empty." << std::endl;
this->swapStack->swap(Block1, x1,y1,x2,y2, 1, this);
} else if (Block1 && Block2) {
if (DEBUGIT_FIELDSWAP) logfile << "Field::swap We're switching two blocks." << std::endl;
this->swapStack->swap(Block1, x1,y1,x2,y2, 0, this);
this->swapStack->swap(Block2, x2,y2,x1,y1, 1, this);
} else {
logfile << "Field::swap -=-WARNING-=- We got in the else-part!" << std::endl;
}
}
SIPHeaderTokens& SIPHeaderTokens::operator=(const SIPHeaderTokens& tokens)
{
SIPHeaderTokens swapable(tokens);
swap(swapable);
return *this;
}
ZMQMessage& ZMQMessage::operator=(const ZMQMessage& message)
{
ZMQMessage swapable(message);
swap(swapable);
return *this;
}