You can write a function for integer exponents and where execution time is important to speed things up.
Discussed and tested here:
In the example provided he did not require pow():
float x;
float y;
void setup()
{
size(500, 500);
strokeWeight(2);
translate(width/2, height/2 - 10);
//Using integer steps in formula used
for (int i = -10; i<10; i+= 1)
{
y = 200/(1+pow(exp(1), i));
point(10*i, 1-y);
}
translate(0, height/2);
// Simplified and using float steps of 0.5
for (float i = -10; i<10; i+= .5)
{
y = 200/(1+exp(i));
point(10*i, 1-y);
}
}
References:
Processing source code for exp() and pow()
:)