While Handmade Math currently has the ability to compile without the CRT if you provide implementations for sin, cos, etc., it might be nice to provide an optional set of implementations that could be easily included for people who do not want the CRT.

nakst on HMN offered that we could use his math functions, which he released into the public domain under the unlicense: https://gist.github.com/nakst/f9c00ef6969fd6ad380bcbae2e10e64a