It's used only as a dev dependency in 5 crates.

Depender (with downloads and own rev deps) Linspace version
410 custom_float dev ^0.1.1
280 1 polynomial_ops dev ^0.1.1
270 float_approx_math dev ^0.1.1
real_time_fir_iir_filters dev ^0.1.1
signal_processing dev ^0.1.1