Some resources for people interested in floating point, and square root calculation.
I'm posting it mostly so it's easy for me to find.
Keep in mind that Microsoft Microcolor BASIC is similar, but it is not identical to single precision.


Floating point:
https://en.wikipedia.org/wiki/Single-precision_floating-point_format
https://koclab.cs.ucsb.edu/teaching/cs192/hwpro/ieee754/Joshi.pdf
https://www.h-schmidt.net/FloatConverter/IEEE754.html
http://steve.hollasch.net/cgindex/coding/ieeefloat.html
https://en.wikipedia.org/wiki/IEEE_floating_point


Square root:
http://www.azillionmonkeys.com/qed/sqroot.html
https://www.codeproject.com/Articles/69941/Best-Square-Root-Method-Algorithm-Function-Precisi
http://stackoverflow.com/questions/19542275/fast-square-root-optimization