simple-soft-float is used at run time in 1 crate (of which 1 optionally). It's used only as a dev dependency in 2 crates.

Depender (with downloads and own rev deps) simple-soft-float version
1 nonstdfloat optional ~0.1
softfloat-wrapper dev ^0.1.0
softfloat-wrapper-riscv dev ^0.1.0