SymEngine::SimplifyVisitor Class Reference

Inheritance diagram for SymEngine::SimplifyVisitor:

Collaboration diagram for SymEngine::SimplifyVisitor:

Public Member Functions
void	bvisit (const Mul &x)
void	bvisit (const Pow &x)
void	bvisit (const OneArgFunction &x)
void	bvisit (const Basic &x)
void	bvisit (const Add &x)
void	bvisit (const Mul &x)
void	bvisit (const Pow &x)
void	bvisit (const OneArgFunction &x)
template<class T >
void	bvisit (const TwoArgBasic< T > &x)
void	bvisit (const MultiArgFunction &x)
void	bvisit (const Piecewise &x)
Public Member Functions inherited from SymEngine::TransformVisitor
virtual RCP< const Basic >	apply (const RCP< const Basic > &x)
void	bvisit (const Basic &x)
void	bvisit (const Add &x)
void	bvisit (const Mul &x)
void	bvisit (const Pow &x)
void	bvisit (const OneArgFunction &x)
template<class T >
void	bvisit (const TwoArgBasic< T > &x)
void	bvisit (const MultiArgFunction &x)
void	bvisit (const Piecewise &x)

Private Member Functions
std::pair< RCP< const Basic >, RCP< const Basic > >	simplify_pow (const RCP< const Basic > &e, const RCP< const Basic > &b)

Additional Inherited Members
Protected Attributes inherited from SymEngine::TransformVisitor
RCP< const Basic >	result_

Detailed Description

Definition at line 11 of file simplify.h.

Constructor & Destructor Documentation

SimplifyVisitor()

SymEngine::SimplifyVisitor::SimplifyVisitor ( )

inline

Definition at line 20 of file simplify.h.

: BaseVisitor<SimplifyVisitor, TransformVisitor>() {}

Member Function Documentation

bvisit() [1/11]

void SymEngine::TransformVisitor::bvisit

(

const Add &

x

)

Definition at line 247 of file visitor.cpp.

{
    vec_basic newargs;
    for (const auto &a : x.get_args()) {
        newargs.push_back(apply(a));
    }
    result_ = add(newargs);
}

bvisit() [2/11]

void SymEngine::TransformVisitor::bvisit

(

const Basic &

x

)

Definition at line 246 of file visitor.cpp.

{
    result_ = x.rcp_from_this();
}

bvisit() [3/11]

void SymEngine::TransformVisitor::bvisit

(

const Mul &

x

)

Definition at line 248 of file visitor.cpp.

{
    vec_basic newargs;
    for (const auto &a : x.get_args()) {
        newargs.push_back(apply(a));
    }
    result_ = mul(newargs);
}

bvisit() [4/11]

void SymEngine::SimplifyVisitor::bvisit

(

const Mul &

x

)

Definition at line 43 of file simplify.cpp.

{
    map_basic_basic map;
    for (const auto &p : x.get_dict()) {
        auto base = apply(p.first);
        auto newpair = simplify_pow(p.second, base);
        Mul::dict_add_term(map, newpair.first, newpair.second);
    }
    result_ = Mul::from_dict(x.get_coef(), std::move(map));
}

bvisit() [5/11]

void SymEngine::TransformVisitor::bvisit

(

const MultiArgFunction &

x

)

Definition at line 264 of file visitor.cpp.

{
    auto fargs = x.get_args();
    vec_basic newargs;
    for (const auto &a : fargs) {
        newargs.push_back(apply(a));
    }
    auto nbarg = x.create(newargs);
    result_ = nbarg;
}

bvisit() [6/11]

void SymEngine::TransformVisitor::bvisit

(

const OneArgFunction &

x

)

Definition at line 250 of file visitor.cpp.

{
    auto farg = x.get_arg();
    auto newarg = apply(farg);
    if (eq(*newarg, *farg)) {
        result_ = x.rcp_from_this();
    } else {
        result_ = x.create(newarg);
    }
}

bvisit() [7/11]

void SymEngine::SimplifyVisitor::bvisit

(

const OneArgFunction &

x

)

Definition at line 7 of file simplify.cpp.

{
    auto farg = x.get_arg();
    auto newarg = apply(farg);
    result_ = x.create(newarg);
}

bvisit() [8/11]

void SymEngine::TransformVisitor::bvisit

(

const Piecewise &

x

)

Definition at line 265 of file visitor.cpp.

{
    auto branch_cond_pairs = x.get_vec();
    PiecewiseVec new_pairs;
    for (const auto &branch_cond : branch_cond_pairs) {
        auto branch = branch_cond.first;
        auto cond = branch_cond.second;
        auto new_branch = apply(branch);
        auto new_cond = apply(cond);
        if (!is_a_Boolean(*new_cond)) {
            new_cond = Eq(new_cond, boolTrue);
        }
        new_pairs.push_back(
            {new_branch, rcp_static_cast<const Boolean>(new_cond)});
    }
    result_ = piecewise(new_pairs);
}

bvisit() [9/11]

void SymEngine::TransformVisitor::bvisit

(

const Pow &

x

)

Definition at line 249 of file visitor.cpp.

{
    auto base_ = x.get_base(), exp_ = x.get_exp();
    auto newarg1 = apply(base_), newarg2 = apply(exp_);
    if (base_ != newarg1 or exp_ != newarg2) {
        result_ = pow(newarg1, newarg2);
    } else {
        result_ = x.rcp_from_this();
    }
}

bvisit() [10/11]

void SymEngine::SimplifyVisitor::bvisit

(

const Pow &

x

)

Definition at line 14 of file simplify.cpp.

{
    auto e = apply(x.get_exp());
    auto base = apply(x.get_base());
    auto pair = simplify_pow(e, base);
    result_ = pow(pair.second, pair.first);
}

bvisit() [11/11]

template<class T >

void SymEngine::TransformVisitor::bvisit ( const TwoArgBasic< T > &  x )

inline

Definition at line 253 of file visitor.h.

    {
        auto farg1 = x.get_arg1(), farg2 = x.get_arg2();
        auto newarg1 = apply(farg1), newarg2 = apply(farg2);
        if (farg1 != newarg1 or farg2 != newarg2) {
            result_ = x.create(newarg1, newarg2);
        } else {
            result_ = x.rcp_from_this();
        }
    }

simplify_pow()

std::pair< RCP< const Basic >, RCP< const Basic > > SymEngine::SimplifyVisitor::simplify_pow ( const RCP< const Basic > &  e, const RCP< const Basic > &  b  )

private

Definition at line 23 of file simplify.cpp.

{
    if (is_a<Csc>(*b) and eq(*e, *minus_one)) {
        // csc(expr) ** -1 = sin(expr)
        return std::make_pair(
            one, sin(down_cast<const OneArgFunction &>(*b).get_arg()));
    } else if (is_a<Sec>(*b) and eq(*e, *minus_one)) {
        // sec(expr) ** -1 = cos(expr)
        return std::make_pair(
            one, cos(down_cast<const OneArgFunction &>(*b).get_arg()));
    } else if (is_a<Cot>(*b) and eq(*e, *minus_one)) {
        // cot(expr) ** -1 = tan(expr)
        return std::make_pair(
            one, tan(down_cast<const OneArgFunction &>(*b).get_arg()));
    } else {
        return std::make_pair(e, b);
    }
}

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The documentation for this class was generated from the following files:

• /home/runner/work/symengine/symengine/symengine/simplify.h
• /home/runner/work/symengine/symengine/symengine/simplify.cpp