void test_some_math()
{
// GCD tests
assert(gcd(54,24) == gcd(12,90) && gcd(13,11) == 1);
// LCM tests
assert(lcm(114920, 14300) == 6320600);
// Binomial coefficient test
assert(binomial(10,2) == 45);
// Test add
assert(add(3,5) == 8 && add(7,3) == 10);
// Test odd or even numbers
assert(!is_even(1) && is_even(2) && !is_even(77) && is_even(500));
// Test if bit n is set
assert(!isbitNset(22, 3) && isbitNset(22,4));
// Test set bit
assert(setbitN(22,3) == 30 && setbitN(2,0) == 3);
// Test unset bit
assert(unsetbitN(30,3) == 22 && unsetbitN(3,0) == 2);
// Test toggle
assert(togglebitN(togglebitN(22,3),3) == 22);
// Test modulo (power of two)
assert(modulo(7,2) == 1 && modulo(6666,2) == 0 && modulo(64,8) == 0);
// Test negate nibbles
assert(neg_nibbles(173,0) == 160 && neg_nibbles(429,1) == 256);;
// Test powX
assert(powX(7,11) == 1977326743 && pow(2,8) == 256 && pow(123123,0) == 1);
}
/*
* This function is only meant to be called from compose. It puts in a value
* for y, and then merges it with the x value
*/
PolyXY compoY(const PolyXY& q, const PolyXY& p)
{
PolyXY poly;
PolyXY temp(p);
Variable x,y;
termXY *qptr = q.start;
termXY *pos=NULL;
termXY *pptr = p.start;
int qdegree = 0;
poly.start = NULL;
while (qptr!=NULL) {
qdegree = qptr->ny;
// Multiply out y term
if(qdegree > 0) {
temp = p;
for(int i = 1; i < qdegree; i++)
temp = temp * p;// Multiply by x term if it exists
if(qptr->nx > 0)
temp = temp * powX(x,qptr->nx);
temp = temp * qptr->an;
poly += temp;
} else {
// Multiply by x term if it exists
if(qptr->nx > 0) {
// poly = poly + powX(x,qptr->nx);
temp = powX(x,qptr->nx);
temp = temp * qptr->an;
poly = poly + temp;
} else
poly = poly + qptr->an;
}
qptr = qptr->next;
pptr = p.start;
}
return poly;
}
