Fastest way to move element on dynamic array

[Gyiove]

Hello everyone

I have:

int *p = new int [100], a;
for( a = 0; a < 100; a++ ) p[a] = a + 1;

now i want to move p[99] value:100 to p[0] so it will be:
p[0] = 100;
p[1] = 1;
p[2] = 2;
...

I would do:

void move( int * data, int what, int to )
{
	int a; int temp;
	if( what > to )
	{
		temp = data[what];
		for( a = what; a > to; a-- ) data[a] = data[a-1];
		data[to] = temp;
		return;
	}

	temp = data[what];
	for( a = what; a < to; a++ ) data[a] = data[a+1];
	data[to] = temp;
}

int *p = new int [100], a;
for( a = 0; a < 100; a++ ) p[a] = a + 1;
move(p, 99, 0 );

Is there faster way to do it?
Feel free to go more advanced than new operator
thank you!