1 /*
2 * Copyright (c) Meta Platforms, Inc. and affiliates.
3 * All rights reserved.
4 *
5 * This source code is licensed under the BSD-style license found in the
6 * LICENSE file in the root directory of this source tree.
7 */
8
9 #include <executorch/kernels/portable/cpu/scalar_utils.h>
10 #include <executorch/runtime/kernel/kernel_includes.h>
11
12 namespace torch {
13 namespace executor {
14 namespace native {
15
16 using Tensor = exec_aten::Tensor;
17 using ScalarType = exec_aten::ScalarType;
18
full_like_out(KernelRuntimeContext & ctx,const Tensor & in,const Scalar & fill_value,optional<MemoryFormat> memory_format,Tensor & out)19 Tensor& full_like_out(
20 KernelRuntimeContext& ctx,
21 const Tensor& in,
22 const Scalar& fill_value,
23 optional<MemoryFormat> memory_format,
24 Tensor& out) {
25 (void)ctx;
26
27 if (memory_format.has_value()) {
28 ET_KERNEL_CHECK_MSG(
29 ctx,
30 memory_format.value() == MemoryFormat::Contiguous ||
31 memory_format.value() == MemoryFormat::Preserve,
32 InvalidArgument,
33 out,
34 "memory_format must be contiguous");
35 }
36
37 ET_KERNEL_CHECK(
38 ctx, tensors_have_same_dim_order(in, out), InvalidArgument, out);
39
40 ET_KERNEL_CHECK(ctx, tensor_is_default_dim_order(in), InvalidArgument, out);
41
42 // Resize for dynamic shape
43 ET_KERNEL_CHECK_MSG(
44 ctx,
45 resize_tensor(out, in.sizes()) == Error::Ok,
46 InvalidArgument,
47 out,
48 "Failed to resize output tensor.");
49
50 ScalarType val_type = utils::get_scalar_dtype(fill_value);
51 ScalarType out_type = out.scalar_type();
52
53 constexpr auto name = "scalar_tensor.out";
54
55 ET_SWITCH_REALB_TYPES(val_type, ctx, name, CTYPE_VAL, [&] {
56 CTYPE_VAL val;
57 utils::extract_scalar(fill_value, &val);
58
59 ET_SWITCH_REALHB_TYPES(out_type, ctx, name, CTYPE_OUT, [&] {
60 CTYPE_OUT val_casted = static_cast<CTYPE_OUT>(val);
61 auto data_out = out.mutable_data_ptr<CTYPE_OUT>();
62 for (size_t i = 0; i < out.numel(); ++i) {
63 data_out[i] = val_casted;
64 }
65 });
66 });
67
68 return out;
69 }
70
71 } // namespace native
72 } // namespace executor
73 } // namespace torch
74