IEEE754 is used at run time in 322 crates (of which 19 optionally). It is a direct run-time dependency in 13 crates. It's used only as a dev dependency in 34 crates (of which 3 directly).

Depender (with downloads and own rev deps) IEEE754 version
173K 18 fast-math ^0.2.6
22K 5 accurate ^0.2
7.8K 84 rust-htslib ^0.2
7.5K 8 rmodbus ^0.2.6
190 6 ramp ^0.2
extended-htslib ^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
num-shaman ^0.2
sps30 ^0.2
4.2M 188 hdrhistogram dev ^0.2.2
21K 5 almost dev ^0.2.6
2 hdrsample dev ^0.2.2