Inverse square root optimization demo
+------------+--------+--------+
| Method | Result | Time |
+------------+--------+--------+
| Naive math | 5793.1 | 42.1ms |
| Carmack | 5779.0 | 55.9ms |
| SSE scalar | 5793.0 | 25.5ms |
| SSE packed | 5785.3 | 7.6ms |
| AVX packed | 5796.8 | 4.5ms |
+------------+--------+--------+