TEST 1:
f(x,y) = .1 * (x^2 + y^2)
x: -1, 1, y: -1, 1

steps: 10
#	mathnetics	pre3d
1	137ms		32ms
2	134ms		41ms
3	137ms		27ms

steps: 20
#	mathnetics	pre3d
1	519ms		54ms
2	501ms		82ms
3	502ms		40ms

steps: 40
#	mathnetics	pre3d
1	2109ms		137ms
2	2127ms		126ms
3	2103ms		152ms

-----------------------------

TEST 2:
f(x,y) = sinc(10*x) + sinc(10*y)
x: -1, 1, y: -1, 1

steps: 10
#	mathnetics	pre3d
1	162ms		80ms
2	137ms		143ms
3	140ms		69ms

steps: 20
#	mathnetics	pre3d
1	502ms		111ms
2	488ms		131ms
3	494ms		154ms

steps: 40
#	mathnetics	pre3d
1	2078ms		318ms
2	2102ms		238ms
3	2113ms		297ms

-----------------------------

TEST 2:
f(x,y) = 1/x*e^x + 1/y*e^y
x: -1, 1, y: -1, 1

steps: 10
#	mathnetics	pre3d
1	137ms		23ms
2	141ms		37ms
3	137ms		22ms

steps: 20
#	mathnetics	pre3d
1	498ms		90ms
2	501ms		80ms
3	526ms		90ms

steps: 40
#	mathnetics	pre3d
1	2100ms		204ms
2	2101ms		245ms
3	2105ms		200ms