2 ms·
Not 100% sure but I believe this is how we landed the lunar module on the moon the first time...tan/arctan/both were too hard to compute on the processors of th
by dxbydt 4y ago
Not 100% sure but I believe this is how we landed the lunar module on the moon the first time...tan/arctan/both were too hard to compute on the processors of those days so they discretized into half angles & stored the tangents in a lookup table.
- hgsgm 4y agoThat's how early calculators worked, and some fast math libraries today too.
- speed_spread 4y agoThe Pentium FDIV bug was due to a bad value in a lookup table.