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Select	Paper	Title	Authors	Audience	Doc Date	Mailing Date
	P3045R10	Quantities and units library	Mateusz Pusz M. Pusz , Dominik Berner D. Berner , Johel Ernesto Guerrero Peña J. Peña , Charles Hogg C. Hogg , Nicolas Holthaus N. Holthaus , Roth Michaels R. Michaels , Vincent Reverdy V. Reverdy	LEWG	2026-10-23	2026-10
Doc Date 2026-10-23 Mailing Date 2026-10 Pre-Búzios Author(s) Mateusz Pusz, Dominik Berner, Johel Ernesto Guerrero Peña, Charles Hogg, Nicolas Holthaus, Roth Michaels, Vincent Reverdy Target Audience LEWG Revisions R9 R8 R7 R6 Tracking issue View on GitHub Abstract Several groups in the ISO C++ Committee reviewed the “P1935: A C++ Approach to Physical Units” [[P1935R2]](https://wg21.link/p1935r2) proposal in Belfast 2019 and Prague 2020. All those groups expressed interest in the potential standardization of such a library and encouraged further work. The authors also got valuable initial feedback that highly influenced the design of the V2 version of the [[
	P4213R1	Minimal SI: Defining the International System of Units for the C++ Standard Library	Mateusz Pusz M. Pusz	LEWG	2026-10-23	2026-10
Doc Date 2026-10-23 Mailing Date 2026-10 Pre-Búzios Author(s) Mateusz Pusz Target Audience LEWG Revisions R0 Tracking issue View on GitHub Abstract [[P3045R10]](https://wg21.link/p3045r10) supplies the type system. It does not supply the SI. A user who includes the framework gets `quantity`, `unit`, `quantity_spec`, `prefix` — but no `metre`, no `kilogram`, no `second`. The framework is deliberately content-agnostic: it supports arbitrary systems of quantities and units. Shipping the framework without SI content would be like shipping `<algor
	P4408R0	Implicit Conversions Between Integer Representation Types	Mateusz Pusz M. Pusz	LEWG SG6	2026-10-23	2026-10
Doc Date 2026-10-23 Mailing Date 2026-10 Pre-Búzios Author(s) Mateusz Pusz Target Audience LEWG SG6 Abstract Consider a distance stored in a 16-bit integer to save memory:

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