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12 changes: 11 additions & 1 deletion extension/tensor/tensor_ptr_maker.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -140,12 +140,22 @@ TensorPtr rand_strided(
std::vector<executorch::aten::StridesType> strides,
executorch::aten::ScalarType type,
executorch::aten::TensorShapeDynamism dynamism) {
auto upper_bound = 1.0f;
// Adjusts the upper bound to prevent rounding to 1.0 when converting to
// lower-precision types.
if (type == executorch::aten::ScalarType::Half) {
upper_bound -=
float(std::numeric_limits<executorch::aten::Half>::epsilon()) / 2;
} else if (type == executorch::aten::ScalarType::BFloat16) {
upper_bound -=
float(std::numeric_limits<executorch::aten::BFloat16>::epsilon()) / 2;
}
return random_strided(
std::move(sizes),
std::move(strides),
type,
dynamism,
std::uniform_real_distribution<float>(0.0f, 1.0f));
std::uniform_real_distribution<float>(0.0f, upper_bound));
}

TensorPtr randn_strided(
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