#pragma once
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#include <c10/core/Scalar.h>
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#include <ATen/Tensor.h>
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#include <ATen/Functions.h>
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// This is in the c10 namespace because we use ADL to find the functions in it.
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namespace c10 {
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// FIXME: this should be (and was) Scalar::toTensor, but there is currently no way
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// to implement this without going through Derived Types (which are not part of core).
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inline at::Tensor scalar_to_tensor(Scalar s, const Device device = at::kCPU) {
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if (s.isFloatingPoint()) {
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return at::scalar_tensor(s, at::device(device).dtype(at::kDouble));
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} else if (s.isBoolean()) {
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return at::scalar_tensor(s, at::device(device).dtype(at::kBool));
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} else if (s.isComplex()) {
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return at::scalar_tensor(s, at::device(device).dtype(at::kComplexDouble));
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} else {
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AT_ASSERT(s.isIntegral(false));
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return at::scalar_tensor(s, at::device(device).dtype(at::kLong));
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}
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}
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}
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