Fix SigFig Bug (#344)

* fix sigfig bug

* Fix api

* fix function name

* fix typo

* doc updates

* fix typo

* fix test

Author: pulsipher

docs/src/develop/extensions.md

@@ -23,10 +23,11 @@ template is provided in
 [`./test/extensions/infinite_domain.jl`](https://github.com/infiniteopt/InfiniteOpt.jl/blob/master/test/extensions/infinite_domain.jl). 
 The extension steps employed are:
 1. Define the new `struct` infinite domain type (only thing required as bare minimum)
-2. Extend [`InfiniteOpt.supports_in_domain`](@ref) (enables error checking of supports)
-3. Extend [`InfiniteOpt.generate_support_values`](@ref) (enables support generation via `num_supports` keyword arguments)
-4. If a lower bound and upper bound can be reported, extend `JuMP` lower bound and upper bound methods (enables automatic bound detection in `integral`)
-5. Extend [`InfiniteOpt.MeasureToolbox.generate_expect_data`](@ref) (enables the use of `expect`) 
+2. Extend[`InfiniteOpt.round_domain`](@ref) (enables safe use of significant digit rounding)
+3. Extend [`InfiniteOpt.supports_in_domain`](@ref) (enables error checking of supports)
+4. Extend [`InfiniteOpt.generate_support_values`](@ref) (enables support generation via `num_supports` keyword arguments)
+5. If a lower bound and upper bound can be reported, extend `JuMP` lower bound and upper bound methods (enables automatic bound detection in `integral`)
+6. Extend [`InfiniteOpt.MeasureToolbox.generate_expect_data`](@ref) (enables the use of `expect`) 
 
 As an example, let's create a univariate disjoint interval domain as an infinite 
 domain type. This corresponds to the domain ``[lb_1, ub_1] \cup [lb_2, ub_2]`` 
@@ -82,13 +83,25 @@ to extend [`generate_integral_data`](@ref). See [`Measure Evaluation Techniques`
 for details. 
 
 To enable support domain checking which is useful to avoid strange bugs, we will 
-extend [`InfiniteOpt.supports_in_domain`](@ref). This returns a `Bool` to 
-indicate if a vector of supports are in the domain:
+extend [`InfiniteOpt.round_domain`](@ref) which rounds the domain to use proper 
+significant digits and [`InfiniteOpt.supports_in_domain`](@ref) which returns a 
+`Bool` whether a vector of supports is in the domain:
 ```jldoctest domain_ext; output = false
+function InfiniteOpt.round_domain(
+    domain::DisjointDomain,
+    sig_digits::Int
+    )
+    lb1 = round(domain.lb1, sigdigits = sig_digits)
+    ub1 = round(domain.ub1, sigdigits = sig_digits)
+    lb2 = round(domain.lb2, sigdigits = sig_digits)
+    ub2 = round(domain.ub2, sigdigits = sig_digits)
+    return DisjointDomain(lb1, ub1, lb2, ub2)
+end
+
 function InfiniteOpt.supports_in_domain(
     supports::Union{Number, Vector{<:Number}},
     domain::DisjointDomain
-    )::Bool
+    )
     return all((domain.lb1 .<= supports .<= domain.ub1) .| (domain.lb2 .<= supports .<= domain.ub2))
 end
 
@@ -113,7 +126,7 @@ function InfiniteOpt.generate_support_values(
     domain::DisjointDomain;
     num_supports::Int = InfiniteOpt.DefaultNumSupports,
     sig_digits::Int = InfiniteOpt.DefaultSigDigits
-    )::Tuple{Vector{Float64}, DataType}
+    )
     length_ratio = (domain.ub1 - domain.lb1) / (domain.ub1 - domain.lb1 + domain.ub2 - domain.lb2)
     num_supports1 = Int64(ceil(length_ratio * num_supports))
     num_supports2 = num_supports - num_supports1

docs/src/guide/constraint.md

@@ -242,7 +242,7 @@ argument. This includes a wealth of constraint types including:
 For example, we could define the following semi-definite constraint:
 ```jldoctest constrs
 julia> @constraint(model, [yb 2yb; 3yb 4yb] >= ones(2, 2), PSDCone())
-[yb(t) - 1    2 yb(t) - 1;
+[yb(t) - 1    2 yb(t) - 1
  3 yb(t) - 1  4 yb(t) - 1] ∈ PSDCone(), ∀ t ∈ [0, 10]
 ```
 See [`JuMP`'s constraint documentation](https://jump.dev/JuMP.jl/v1/manual/constraints/) 

docs/src/guide/derivative.md

@@ -1,6 +1,6 @@
 ```@meta
 DocTestFilters = [r"≥|>=", r" == | = ", r" ∈ | in ", r" for all | ∀ ", r"d|∂", 
-                  r"integral|∫", r".*scalar_parameters.jl:783"]
+                  r"integral|∫", r".*scalar_parameters.jl:790"]
 ```
 
 # [Derivative Operators](@id deriv_docs)
@@ -502,7 +502,7 @@ julia> derivative_constraints(d1)
 
 julia> add_supports(t, 0.2)
 ┌ Warning: Support/method changes will invalidate existing derivative evaluation constraints that have been added to the InfiniteModel. Thus, these are being deleted.
-└ @ InfiniteOpt ~/work/infiniteopt/InfiniteOpt.jl/src/scalar_parameters.jl:783
+└ @ InfiniteOpt ~/work/infiniteopt/InfiniteOpt.jl/src/scalar_parameters.jl:790
 
 julia> has_derivative_constraints(d1)
 false

docs/src/manual/domains.md

@@ -22,6 +22,7 @@ JuMP.set_lower_bound(::AbstractInfiniteDomain, ::Real)
 JuMP.has_upper_bound(::AbstractInfiniteDomain)
 JuMP.upper_bound(::AbstractInfiniteDomain)
 JuMP.set_upper_bound(::AbstractInfiniteDomain, ::Real)
+InfiniteOpt.round_domain
 ```
 
 ## Support Point Labels

src/array_parameters.jl

@@ -2,34 +2,38 @@
 #                   CORE DISPATCHVARIABLEREF METHOD EXTENSIONS
 ################################################################################
 # Extend dispatch_variable_ref
-function dispatch_variable_ref(model::InfiniteModel,
-                               index::DependentParameterIndex
-                               )::DependentParameterRef
+function dispatch_variable_ref(
+    model::InfiniteModel,
+    index::DependentParameterIndex
+    )
     return DependentParameterRef(model, index)
 end
 
 # Extend _add_data_object
-function _add_data_object(model::InfiniteModel,
-                          object::MultiParameterData
-                          )::DependentParametersIndex
+function _add_data_object(
+    model::InfiniteModel,
+    object::MultiParameterData
+    )
     index = MOIUC.add_item(model.dependent_params, object)
     push!(model.param_object_indices, index)
     return index
 end
 
 # Extend _data_dictionary (type based)
-function _data_dictionary(model::InfiniteModel,
-    ::Type{DependentParameters})::MOIUC.CleverDict
+function _data_dictionary(
+    model::InfiniteModel,
+    ::Type{DependentParameters}
+    )
     return model.dependent_params
 end
 
 # Extend _data_dictionary (ref based)
-function _data_dictionary(pref::DependentParameterRef)::MOIUC.CleverDict
+function _data_dictionary(pref::DependentParameterRef)
     return JuMP.owner_model(pref).dependent_params
 end
 
 # Extend _data_object
-function _data_object(pref::DependentParameterRef)::MultiParameterData
+function _data_object(pref::DependentParameterRef)
     object = get(_data_dictionary(pref), JuMP.index(pref).object_index, nothing)
     if isnothing(object) 
         error("Invalid dependent parameter reference, cannot find ",
@@ -40,17 +44,17 @@ function _data_object(pref::DependentParameterRef)::MultiParameterData
 end
 
 # Extend _core_variable_object
-function _core_variable_object(pref::DependentParameterRef)::DependentParameters
+function _core_variable_object(pref::DependentParameterRef)
     return _data_object(pref).parameters
 end
 
 # Return the number of dependent parameters involved
-function _num_parameters(pref::DependentParameterRef)::Int
+function _num_parameters(pref::DependentParameterRef)
     return length(_data_object(pref).names)
 end
 
 # Extend _delete_data_object
-function _delete_data_object(vref::DependentParameterRef)::Nothing
+function _delete_data_object(vref::DependentParameterRef)
     delete!(_data_dictionary(vref), JuMP.index(vref).object_index)
     return
 end
@@ -59,7 +63,7 @@ end
 #                             PARAMETER DEFINITION
 ################################################################################
 # Check that multi-dimensional domains are all the same
-function _check_same_domain(_error::Function, domains)::Nothing 
+function _check_same_domain(_error::Function, domains)
     if !_allequal(domains)
         _error("Conflicting infinite domains. Only one multi-dimensional ",
                "can be specified. Otherwise, scalar domains can be used ",
@@ -74,7 +78,7 @@ function _make_array_domain(
     _error::Function,
     domains::Vector{T},
     inds::Collections.ContainerIndices
-    )::T where {T <: MultiDistributionDomain}
+    ) where {T <: MultiDistributionDomain}
     _check_same_domain(_error, domains)
     dist = first(domains).distribution
     if size(dist) != size(inds)
@@ -99,7 +103,7 @@ function _make_array_domain(
     _error::Function,
     domains::Vector{T},
     inds::Collections.ContainerIndices
-    )::T where {T <: CollectionDomain}
+    ) where {T <: CollectionDomain}
     _check_same_domain(_error, domains)
     if length(collection_domains(first(domains))) != length(inds)
         _error("The dimensions of the parameters and the specified ",
@@ -125,7 +129,7 @@ function _make_array_domain(
     _error::Function,
     domains::Vector{T},
     inds::Collections.ContainerIndices
-    )::T where {T <: InfiniteArrayDomain}
+    ) where {T <: InfiniteArrayDomain}
     _check_same_domain(_error, domains)
     return first(domains)
 end
@@ -135,7 +139,7 @@ function _make_array_domain(
     _error::Function,
     domains::Vector{T},
     inds::Collections.ContainerIndices
-    )::CollectionDomain{T} where {T <: InfiniteScalarDomain}
+    ) where {T <: InfiniteScalarDomain}
     return CollectionDomain(domains)
 end
 
@@ -151,7 +155,7 @@ function _process_supports(
     supps::Vector{<:Real},
     domain,
     sig_digits
-    )::Dict{Vector{Float64}, Set{DataType}}
+    )
     if !supports_in_domain(reshape(supps, length(supps), 1), domain) 
         _error("Support violates the infinite domain.")
     end
@@ -165,7 +169,7 @@ function _process_supports(
     vect_supps::Vector{<:Vector{<:Real}},
     domain,
     sig_digits
-    )::Dict{Vector{Float64}, Set{DataType}}
+    )
     len = length(first(vect_supps))
     if any(length(s) != len for s in vect_supps)
         _error("Inconsistent support dimensions.")
@@ -185,7 +189,7 @@ function _process_derivative_methods(
     _error::Function,
     methods::V,
     domains
-    )::V where {V <: Vector{<:NonGenerativeDerivativeMethod}}
+    ) where {V <: Vector{<:NonGenerativeDerivativeMethod}}
     return methods
 end
 
@@ -219,6 +223,7 @@ function _build_parameters(
     end
     # process the infinite domain
     domain = _make_array_domain(_error, domains, orig_inds)
+    domain = round_domain(domain, sig_digits)
     # we have supports
     if !isempty(supports)
         supp_dict = _process_supports(_error, supports, domain, sig_digits)
@@ -272,7 +277,7 @@ function add_parameters(
     model::InfiniteModel,
     params::DependentParameters,
     names::Vector{String}
-    )::Vector{GeneralVariableRef}
+    )
     # get the number of parameters
     num_params = length(params.domain)
     # process the names
@@ -297,7 +302,7 @@ end
 #                                  NAMING
 ################################################################################
 # Get the parameter index in the DependentParameters object
-_param_index(pref::DependentParameterRef)::Int = JuMP.index(pref).param_index
+_param_index(pref::DependentParameterRef) = JuMP.index(pref).param_index
 
 """
     JuMP.name(pref::DependentParameterRef)::String
@@ -311,7 +316,7 @@ julia> name(pref)
 "par_name"
 ```
 """
-function JuMP.name(pref::DependentParameterRef)::String
+function JuMP.name(pref::DependentParameterRef)
     object = get(_data_dictionary(pref), JuMP.index(pref).object_index, nothing)
     return isnothing(object) ? "" : object.names[_param_index(pref)]
 end
@@ -330,7 +335,7 @@ julia> name(vref)
 "para_name"
 ```
 """
-function JuMP.set_name(pref::DependentParameterRef, name::String)::Nothing
+function JuMP.set_name(pref::DependentParameterRef, name::String)
     _data_object(pref).names[_param_index(pref)] = name
     JuMP.owner_model(pref).name_to_param = nothing
     return