[skip ci]

Ref. Madysson/estimation-codes#5

Simple variable nodes are already correctly matched by
ExprNode::matchLinearCombinationOfVariables().

Also improve the related documentation.

The existing check (in AbstractEstimatedParamsStatement::commonCheckPass()) was
only working inside a given estimated_params block, but not across blocks.

This option provides the same behaviour as before the change in
60ef6bbd.

It is typically useful when doing several estimations in the same .mod file.

Also use a better name for the type-specific ID variable.

The purpose of this statement is to specify the options that apply to the whole
model, when there are several “model” blocks, so as to restore the symmetry
between those blocks (since otherwise one “model” block would typically bear
the options, while the other ones would typically have no option).

It still remains possible to specify the options on one “model” block, or even
spread accross several ones.

Closes: #19

Factorize the implementation with the existing code for the include_eqs and
exclude_eqs options (which has been refactored by the way).

Ref. #19

In a model with [static]/[dynamic] equations, if the user was using include_eqs
with a list of equations that does *not* contain equations marked
[static]/[dynamic], then the call to ModelTree::includeExcludeEquations(…,
static_equations=true) would have an empty list of equation tags (as stored
in tag_eqns).

The right behaviour in this case is to exclude all static equations. However,
the code would exclude none, and this would disrupt the equilibrium between
[static] and [dynamic] equations (since all [dynamic] equations were excluded
by the other call to the same method).

The fix consists in removing the shortcut that returns from the method if
tag_eqns is empty.

Julia specific interface for normcdf and normpdf

See merge request Dynare/preprocessor!56

Everything was already in place (since ages!), except that the parser interface
was missing.

Also fix the derivation formula for atanh, which was incorrect.

Closes: #85

Ref. !55

This file operates on vectors.

Ref. dynare#1826

By the way, also perform a small code simplification.

By the way, also perform a small code simplification.

The simplifyEquations() methods had to be moved to DynamicModel, in order to
access the static_only_equations member.

Incidentally, this also fixes a detrending bug in the Occbin engine (since the
latter internally generates a [static] equation).

Ref. dynare#1827

By the way, perform a small code simplification.

evaluate_planner_objective: add options

See merge request Dynare/preprocessor!54

Related to Dynare/dynare!1967

In practice, only those auxiliary variables which do not have an orig_symb_id
will be listed (in addition to unary ops, due to an implementation bug).

Also add the new equation to auxiliary equations in the backward case (but not
in the MCE case, since that equation is recursive).

There is no reason to keep this distinction.

Additionally, since the data structure is now symmetric with the MCE case,
unify this “h” parameter vector with the “α” parameter vector.

By the way, refactor the MCE case by merging two routines related to the Z₁ aux. var.
This restores the symmetry with the backward case, now that the latter also has
an aux. var. for the pac_expectation operator. Also store the aux. var. IDs in a
structure common to the backward and MCE cases.

Fix this by restricting the detection of constant equations to those where the
variable appears without a lead or lag.

Closes: #83

Closes: #82