Supported functional methods

Supported operators

Overloaded operators

Operator	Sentis equivalent
-x	Neg
x + y	Add
x - y	Sub
x * y	Mul
x / y	Div
x % y	Mod
x > y	Greater
x >= y	GreaterOrEqual
x < y	Less
x <= y	LessOrEqual
x & y	And
x | y	Or
x ^ y	Xor
~x	Not

Binary operators may also be used between functional tensors and scalar float, integer, and boolean values, for example, 'x + 1', 'x % 2.5f', 'False ^ x'.

Indexers

Sentis allows indexing of functional tensors using C# square bracket indexer notation. These are mapped to the Slice and SetSlice operators.

Indexes and Ranges can be used as in these examples, x and y are functional tensors, i and j are integers.

Operator	Description
x[i]	Slice first dimension at index i and remove sliced dimension.
x[^i]	Slice first dimension at index i from the end and remove sliced dimension.
x[i..j]	Slice first dimension from index i inclusive to j exclusive.
x[i..]	Slice first dimension from index i inclusive to end.
x[..^j]	Slice first dimension from start to index j from end exclusive.
x[i, j]	Slice first dimension at index i and second dimension at index j and remove sliced dimensions.
x[.., i]	Slice second dimension at index i and remove sliced dimension.
x[i] = y	Set slice i of x to be equal to y, the shape of y must be broadcastable to the slice shape of x.
x[i..j] = y[i..j]	Set slice of x to be equal to slice of y, the slice shape of y must be broadcastable to the slice shape of x.

Sentis does not support setting a slice of a functional tensor directly as a scalar float or integer value with this method. Use the Functional.Tensor(value) method to create a scalar functional tensor.

Functional methods

Sentis supports many functional methods modelled after the PyTorch library, with additional ones planned for future updates. Each of these methods is mapped to one or more Sentis layers.

The input parameters and outputs will not exactly match the PyTorch version; check the API reference for more information.

Operator	PyTorch equivalent	Sentis equivalent
Zeros	zeros	ConstantOfShape
ZerosLike	zeros_like	Shape, ConstantOfShape
Ones	ones	ConstantOfShape
OnesLike	ones_like	Shape, ConstantOfShape
ARange	arange	Range
LinSpace	linspace	Range
LogSpace	logspace	Pow, Range
Full	full	ConstantOfShape
FullLike	full_like	Shape, ConstantOfShape
Concat	concat	Concat
Gather	gather	GatherElements
MoveDim	movedim	MoveDim
Narrow	narrow	Narrow
NonZero	nonzero	NonZero
Permute	permute	Transpose
Reshape	reshape	Reshape
Select	select	Select
Scatter	scatter	ScatterElements
SelectScatter	select_scatter	SliceSet, Unsqueeze
SliceScatter	slice_scatter	SliceSet
ScatterAdd	scatter_add	ScatterElements
Split	split	Split
Squeeze	squeeze	Squeeze
Stack	stack	Concat, Unsqueeze
Take	take	Reshape, Gather
Tile	tile	Tile
Transpose	transpose	MoveDim
Unsqueeze	unsqueeze	Unsqueeze
Where	where	Where
Bernoulli	bernoulli	Bernoulli
Multinomial	multinomial	Multinomial
Normal	normal	RandomNormal
Rand	rand	RandomUniform
RandLike	rand_like	RandomUniformLike
RandInt	rand_int	Floor, RandomUniform
RandIntLike	randint_like	Floor, RandomUniformLike
RandN	randn	RandomNormal
RandNLike	randn_like	RandomNormalLike
Abs	abs	Abs
Acos	acos	Acos
Acosh	acosh	Acosh
Add	add	Add
Asin	asin	Asin
Asinh	asinh	Asinh
Atan	atan	Atan
Atanh	atanh	Atanh
Ceil	ceil	Ceil
Clamp	clamp	Clamp
Cos	cos	Cos
Cosh	cosh	Cosh
Deg2Rad	deg2rad	ScalarMad
Div	div	Div
Erf	erf	Erf
Exp	exp	Exp
FloatPower	float_power	Pow
Floor	floor	Floor
FloorDivide	floor_divide	Floor, Div
FMod	fmod	Mod
Frac	frac	Sub, Floor, Abs, Mul, Sign
Lerp	lerp	Add, ScalarMad, Sub
Log	log	Log
Log10	log10	Log, ScalarMad
Log1P	log1p	Log, ScalarMad
Log2	log2	Log, ScalarMad
LogAddExp	logaddexp	Log, Add, Exp
LogicalAnd	logical_and	And
LogicalNot	logical_not	Not
LogicalOr	logical_or	Or
LogicalXor	logical_xor	Xor
Mul	mul	Mul
Neg	neg	Neg
Positive	positive	-
Pow	pow	Pow
Rad2Deg	rad2deg	ScalarMad
Reciprocal	reciprocal	Reciprocal
Remainder	remainder	Mod
Round	round	Round
RSqrt	rsqrt	Reciprocal, Sqrt
Sign	sign	Sign
Sin	sin	Sin
Sinh	sinh	Sinh
Sqrt	sqrt	Sqrt
Square	square	Square
Sub	sub	Sub
Tan	tan	Tan
Tanh	tanh	Tanh
Trunc	trunc	Floor, Abs, Mul, Sign
ArgMax	argmax	ArgMax
ArgMin	argmin	ArgMin
ReduceMax	amax	ReduceMax
ReduceMin	amin	ReduceMin
ReduceLogSumExp	logsumexp	ReduceLogSumExp
ReduceMean	mean	ReduceMean
ReduceProd	prod	ReduceProd
ReduceSum	sum	ReduceSum
Equal	eq	Equal
GreaterEqual	greater_equal	GreaterOrEqual
Greater	greater	Greater
IsFinite	isfinite	Not, Or, IsInf, IsNaN
IsInf	isinf	IsInf
IsNaN	isnan	IsNaN
LessEqual	less_equal	LessOrEqual
Less	less	Less
Max	maximum	Max
Min	minimum	Min
NotEqual	not_equal	Not, Equal
TopK	topk	TopK
AtLeast1D	atleast_1d	Expand
AtLeast2D	atleast_2d	Expand
AtLeast3D	atleast_3d	Expand
BroadcastTo	broadcast_to	Expand
Clone	clone	Identity
CumSum	cumsum	CumSum
Einsum	einsum	Einsum
Flip	flip	Slice
FlipLR	fliplr	Slice
FlipUD	flipud	Slice
Ravel	ravel	Reshape
TriL	tril	Trilu
TriU	triu	Trilu
MatMul	matmul	MatMul
Conv1D	conv1d	Conv
Conv2D	conv2d	Conv
Conv3D	conv3d	Conv
Conv1Transpose1D	conv_transpose1d	ConvTranspose
Conv1Transpose2D	conv_transpose2d	ConvTranspose
Conv1Transpose3D	conv_transpose3d	ConvTranspose
AvgPool1D	avg_pool1d	AveragePool
AvgPool2D	avg_pool2d	AveragePool
AvgPool3D	avg_pool3d	AveragePool
MaxPool1D	max_pool1d	MaxPool
MaxPool2D	max_pool2d	MaxPool
MaxPool3D	max_pool3d	MaxPool
Relu	relu	Relu
HardSwish	hardswish	HardSwish
Relu6	relu6	Relu6
Elu	elu	Elu
Selu	selu	Selu
Celu	celu	Celu
LeakyRelu	leaky_relu	LeakyRelu
PRelu	prelu	PRelu
Gelu	gelu	Gelu
Softsign	softsign	Softsign
Softplus	softplus	Softplus
Softmax	softmax	Softmax
LogSoftmax	log_softmax	LogSoftmax
Sigmoid	sigmoid	Sigmoid
HardSigmoid	hardsigmoid	HardSigmoid
BatchNorm	batch_norm	BatchNormalization
InstanceNorm	instance_norm	InstanceNormalization
LocalResponseNorm	local_response_norm	LRN
OneHot	one_hot	OneHot
PixelShuffle	pixel_shuffle	DepthToSpace
PixelUnshuffle	pixel_unshuffle	SpaceToDepth
Interpolate	interpolate	Resize
NMS	nms	NonMaxSuppression