* Hi folks! I've been playing around with `f64` on `riscv32imc-unknown-none-elf` and...

```
 rust-lld: error: undefined symbol: fmin
          >>> referenced by f64.rs:940 (/rustc/31bc7e2c47e82798a392c770611975a6883132c8/library/core/src/num/f64.rs:940)
```

I defined `fmin` and `fmax` and my program works as expected, but I wonder why the toolchain does not provide a software implementation for floating-point operations