#pragma once
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// STOP!!! Thinking of including this header directly? Please
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// read Note [TH abstraction violation]
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#include <TH/THTensor.h>
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#include <TH/THStorageFunctions.hpp>
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#include <atomic>
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#include <ATen/ATen.h>
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// Returns a Tensor given a TensorImpl. The TensorImpl remains valid after the
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// the Tensor is destroyed.
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inline at::Tensor THTensor_wrap(THTensor* tensor) {
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c10::raw::intrusive_ptr::incref(tensor);
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return at::Tensor(c10::intrusive_ptr<at::TensorImpl>::reclaim(tensor));
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}
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inline const int64_t* THTensor_getSizePtr(THTensor* tensor) {
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return tensor->sizes().data();
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}
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inline const int64_t* THTensor_getStridePtr(THTensor* tensor) {
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return tensor->strides().data();
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}
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// NB: Non-retaining
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inline THStorage* THTensor_getStoragePtr(const THTensor* tensor) {
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// Within PyTorch, the invariant is that storage_ is always
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// initialized; we never have tensors that don't have any storage.
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// However, for Caffe2, this is not true, because they have permitted
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// tensors to be allocated without specifying what scalar type
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// they should be, only to be filled when GetMutableData is called
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// for the first time (providing the necessary type). It is an ERROR to
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// invoke any PyTorch operations on such a half-constructed storage,
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// and this check tests for that case.
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TORCH_CHECK(tensor->storage(), "Cannot use PyTorch operations on a half-constructed "
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"tensor. If this tensor came from Caffe2, please call GetMutableData on "
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"it first; otherwise, this is a bug, please report it.");
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return tensor->storage().unsafeGetStorageImpl();
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}
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inline void THTensor_maybe_zero_dim(THTensor *tensor, bool condition_when_zero_dim) {
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bool set_zero_dim = condition_when_zero_dim && tensor->sizes().size() == 1 && tensor->size(0) == 1;
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if (set_zero_dim) {
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tensor->set_sizes_and_strides({}, {});
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}
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}
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// [NOTE: nDimension vs nDimensionLegacyNoScalars vs nDimensionLegacyAll]
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// nDimension corresponds to the "true" ATen dimension.
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// nDimensionLegacyNoScalars correpsonds to the ATen dimension, except scalars are viewed as 1-dimensional tensors.
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// nDimensionLegacyAll corresponds to the ATen dimension, except scalars are viewed as 1-dimensional tensors
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// and tensors with a dimension of size zero are collapsed to 0-dimensional tensors.
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//
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// Eventually, everything should go through nDimension or tensor->dim().
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inline int THTensor_nDimension(const THTensor* tensor) {
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return tensor->dim();
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}
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inline int THTensor_nDimensionLegacyNoScalars(const THTensor* tensor) {
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if (tensor->dim() == 0) {
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return 1;
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} else {
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return tensor->dim();
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}
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}
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inline int THTensor_nDimensionLegacyAll(const THTensor* tensor) {
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if (tensor->is_empty()) {
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return 0;
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} else if (tensor->dim() == 0) {
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return 1;
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} else {
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return tensor->dim();
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}
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}
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inline int64_t THTensor_strideLegacyNoScalars(const THTensor *self, int dim) {
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THArgCheck((dim >= 0) && (dim < THTensor_nDimensionLegacyNoScalars(self)), 2, "dimension %d out of range of %dD tensor",
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dim, THTensor_nDimensionLegacyNoScalars(self));
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return self->dim() == 0 ? 1 : self->stride(dim);
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}
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inline int64_t THTensor_sizeLegacyNoScalars(const THTensor *self, int dim)
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{
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THArgCheck((dim >= 0) && (dim < THTensor_nDimensionLegacyNoScalars(self)), 2, "dimension %d out of range of %dD tensor",
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dim, THTensor_nDimensionLegacyNoScalars(self));
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return self->dim() == 0 ? 1 : self->size(dim);
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}
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#include <TH/generic/THTensorFastGetSet.hpp>
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#include <TH/THGenerateAllTypes.h>
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#include <TH/generic/THTensorFastGetSet.hpp>
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#include <TH/THGenerateBFloat16Type.h>
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inline std::vector<int64_t> THTensor_sizesLegacyNoScalars(const THTensor *self) {
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if (self->dim() == 0) {
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return {1};
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} else {
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return self->sizes().vec();
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}
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}
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inline std::vector<int64_t> THTensor_stridesLegacyNoScalars(const THTensor *self) {
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if (self->dim() == 0) {
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return {1};
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} else {
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return self->strides().vec();
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}
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}
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// NB: Steals ownership of storage
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TH_API void THTensor_stealAndSetStoragePtr(THTensor* tensor, THStorage* storage);
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TH_API void THTensor_free(THTensor *self);
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TH_API void THTensor_setStorageNd(THTensor *self, THStorage *storage, ptrdiff_t storageOffset, int nDimension, const int64_t *size, const int64_t *stride);
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TH_API void THTensor_resizeNd(THTensor *self, int nDimension, const int64_t *size, const int64_t *stride);
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TH_CPP_API void THTensor_resize(THTensor *self, at::IntArrayRef size, at::IntArrayRef stride);
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TH_CPP_API void THTensor_setStorage(THTensor *self, THStorage *storage_, ptrdiff_t storageOffset_, at::IntArrayRef size_, at::IntArrayRef stride_);
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TH_CPP_API c10::optional<std::vector<int64_t>> THTensor_compute_stride(
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at::IntArrayRef oldshape,
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at::IntArrayRef oldstride,
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at::IntArrayRef newshape);
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#include <TH/generic/THTensor.hpp>
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#include <TH/THGenerateAllTypes.h>
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#include <TH/generic/THTensor.hpp>
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#include <TH/THGenerateHalfType.h>
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#include <TH/generic/THTensor.hpp>
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#include <TH/THGenerateBoolType.h>
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#include <TH/generic/THTensor.hpp>
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#include <TH/THGenerateBFloat16Type.h>
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