IEEE754 is used at run time in 239 crates (of which 13 optionally). It is a direct run-time dependency in 14 crates. It's used only as a dev dependency in 26 crates (of which 3 directly).

Depender (with downloads and own rev deps) IEEE754 version
599K 16 robust optional ^0.2
86K 14 fast-math ^0.2.6
8.5K 5 accurate ^0.2
5.0K 63 rust-htslib ^0.2
3.3K 6 rmodbus ^0.2.6
100 6 ramp ^0.2
d4tools ^0.2.6
1 smartnoise_validator ^0.2.6
1 framp ^0.2
smartnoise_runtime ^0.2.6
whitenoise_runtime ^0.2.6
sps30 ^0.2
num-shaman ^0.2
extended-htslib ^0.2
3.7M 86 hdrhistogram dev ^0.2.2
35K 5 almost dev ^0.2.6
2 hdrsample dev ^0.2.2