Tape< T > Class Template Reference

Public Member Functions
template<typename Operator>
bool	register_operator () noexcept
	Register an operator type once. Registration uses no arena storage.
void	reset () noexcept
void	begin_graph () noexcept
bool	rewind_graph () noexcept
	Reclaim only operation records, preserving views and their gradients.
BufferView< T >	view (T *values, std::size_t length) noexcept
	Generic active view; output() is clearer for application code.

Description

template<typename T>
class arm_cmsis_dsp::autodiff::Tape< T >

Reverse-mode tape using caller-supplied storage and a fixed operator list.

Examples

autodiff_example/Iris/main.cpp.

Member Function Documentation

begin_graph()

template<typename T>

void begin_graph ( )

inlinenoexcept

Mark all current arena allocations as persistent training state.

Examples

autodiff_example/Iris/main.cpp.

register_operator()

template<typename T>

template<typename Operator>

bool register_operator ( )

inlinenoexcept

Register an operator type once. Registration uses no arena storage.

Template Parameters

Operator

Operator type to register.

Returns

True if registered or already present; false if the registry is full.

Examples

autodiff_example/Iris/main.cpp.

reset()

template<typename T>

void reset ( )

inlinenoexcept

Release gradients and records. Operator registrations are preserved.

rewind_graph()

template<typename T>

bool rewind_graph ( )

inlinenoexcept

Reclaim only operation records, preserving views and their gradients.

Returns

True on success; false if begin_graph() has not marked the graph.

Examples

autodiff_example/Iris/main.cpp.

view()

template<typename T>

BufferView< T > view ( T * values, std::size_t length )

inlinenoexcept

Generic active view; output() is clearer for application code.

Parameters

values	Caller-owned value buffer, which must outlive the view.
length	Number of values and gradient elements.

Returns

Intermediate buffer view with zero-initialized gradients allocated from the tape. On failure, the view has no gradient buffer and the tape status records the error.