---
id: pr-cccl-cub-4256
repo: NVIDIA/cccl
pr: 4256
title: Implement fp constants
author: davebayer
date: '2025-03-26'
url: https://github.com/NVIDIA/cccl/pull/4256
source_category: upstream-code
architectures:
- sm100
tags:
- fp8
techniques: []
hardware_features:
- fp8
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: e2ee9e7c4120975934acd4327766c10b4a297570
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- libcudacxx/include/cuda/std/__floating_point/constants.h
- libcudacxx/include/cuda/std/__floating_point/fp.h
- libcudacxx/include/cuda/std/__floating_point/properties.h
- libcudacxx/test/libcudacxx/libcxx/numerics/floating.point/constants.pass.cpp
- libcudacxx/test/libcudacxx/libcxx/numerics/floating.point/properties.pass.cpp
artifact_dir: evidence/pull-bundles/cccl-cub/gh-4256
head_ref_oid: c74cc80f9fb7f48007efcfc6f7bd734bd81dd248
---
# Implement fp constants

- Repository: `NVIDIA/cccl`
- PR: [4256](https://github.com/NVIDIA/cccl/pull/4256)
- Decision: `Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.`
- Reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.

## Changed Paths

- `libcudacxx/include/cuda/std/__floating_point/constants.h`
- `libcudacxx/include/cuda/std/__floating_point/fp.h`
- `libcudacxx/include/cuda/std/__floating_point/properties.h`
- `libcudacxx/test/libcudacxx/libcxx/numerics/floating.point/constants.pass.cpp`
- `libcudacxx/test/libcudacxx/libcxx/numerics/floating.point/properties.pass.cpp`

## Evidence Bundle

`evidence/pull-bundles/cccl-cub/gh-4256`
