Error for int arguments

[ianhbell]

It took me a while to realize precisely what the problem was, but if I pass an integer argument in some cases I get what I assume are iteration failures, while when I pass the same quantity as a float, no problem. I assume the values should be up-cast to double first.

model = SAFTVRQMie(["hydrogen"])
display( model.params.sigma)
display(model.params.lambda_a)
display(model.params.lambda_r)
display(model.params.epsilon)

crit = Clapeyron.crit_pure(model)
print(crit)
Tc, pc, vc = crit
T = 14
print(T)
p, vl, vv = saturation_pressure(model, T)
prop = -Clapeyron.VT_entropy_res(model, vl, T, z)/8.31446261815324

yields

...
(33.434046890891814, 1.3841855209847114e6, 6.452374327127238e-5)14
InexactError: Int64(3.453199220287775e-10)

Stacktrace:
  [1] Int64
    @ ./float.jl:788 [inlined]
  [2] convert
    @ ~/.julia/packages/ForwardDiff/QdStj/src/dual.jl:433 [inlined]
  [3] setindex!
    @ ./array.jl:966 [inlined]
  [4] d(model::SAFTVRQMie{BasicIdeal}, V::Float64, T::ForwardDiff.Dual{ForwardDiff.Tag{Clapeyron.var"#fun#184"{SAFTVRQMie{BasicIdeal}, Float64, Vector{Float64}}, Int64}, Int64, 1}, z::Vector{Float64}, _σeff::Matrix{ForwardDiff.Dual{ForwardDiff.Tag{Clapeyron.var"#fun#184"{SAFTVRQMie{BasicIdeal}, Float64, Vector{Float64}}, Int64}, Float64, 1}})
    @ Clapeyron ~/.julia/packages/Clapeyron/u0y5V/src/models/SAFT/SAFTVRMie/variants/SAFTVRQMie.jl:164
  [5] macro expansion
    @ ~/.julia/packages/Clapeyron/u0y5V/src/utils/macros.jl:77 [inlined]
  [6] data(model::SAFTVRQMie{BasicIdeal}, V::Float64, T::ForwardDiff.Dual{ForwardDiff.Tag{Clapeyron.var"#fun#184"{SAFTVRQMie{BasicIdeal}, Float64, Vector{Float64}}, Int64}, Int64, 1}, z::Vector{Float64})
    @ Clapeyron ~/.julia/packages/Clapeyron/u0y5V/src/models/SAFT/SAFTVRMie/variants/SAFTVRQMie.jl:86
  [7] a_mono
    @ ~/.julia/packages/Clapeyron/u0y5V/src/models/SAFT/SAFTVRMie/variants/SAFTVRQMie.jl:74 [inlined]
  [8] macro expansion
    @ ~/.julia/packages/Clapeyron/u0y5V/src/utils/macros.jl:77 [inlined]
  [9] a_res
    @ ~/.julia/packages/Clapeyron/u0y5V/src/models/SAFT/SAFTVRMie/variants/SAFTVRQMie.jl:79 [inlined]
 [10] eos_res(model::SAFTVRQMie{BasicIdeal}, V::Float64, T::ForwardDiff.Dual{ForwardDiff.Tag{Clapeyron.var"#fun#184"{SAFTVRQMie{BasicIdeal}, Float64, Vector{Float64}}, Int64}, Int64, 1}, z::Vector{Float64})
    @ Clapeyron ~/.julia/packages/Clapeyron/u0y5V/src/base/EoSModel.jl:75
 [11] fun
    @ ~/.julia/packages/Clapeyron/u0y5V/src/methods/VT.jl:22 [inlined]
 [12] derivative
    @ ~/.julia/packages/ForwardDiff/QdStj/src/derivative.jl:14 [inlined]
 [13] derivative
    @ ~/.julia/packages/Clapeyron/u0y5V/src/solvers/ad.jl:6 [inlined]
 [14] VT_entropy_res(model::SAFTVRQMie{BasicIdeal}, V::Float64, T::Int64, z::Vector{Float64})
    @ Clapeyron ~/.julia/packages/Clapeyron/u0y5V/src/methods/VT.jl:23
 [15] top-level scope
    @ In[71]:17
 [16] eval
    @ ./boot.jl:368 [inlined]
 [17] include_string(mapexpr::typeof(REPL.softscope), mod::Module, code::String, filename::String)
    @ Base ./loading.jl:1428