def METHOD_NAME():
    import numpy as nm
    import sfepy.mechanics.matcoefs as mc
    E = 1e10
    nu = 0.3
    rho = 1100
    vp, vs = mc.wave_speeds_from_youngpoisson(E, nu, rho)
    E2, nu2 = mc.youngpoisson_from_wave_speeds(vp, vs, rho)
    tst.report(E, nu, ' == ', E2, nu2)
    assert nm.allclose(E, E2, rtol=1e-14, atol=0.0)
    assert nm.allclose(nu, nu2, rtol=1e-14, atol=0.0)