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Select	Paper	Title	Authors	Audience	Doc Date	Mailing Date
	P4185R2	Absolute Quantities	Mateusz Pusz M. Pusz	SG6	2026-10-23	2026-10
Doc Date 2026-10-23 Mailing Date 2026-10 Pre-Búzios Author(s) Mateusz Pusz Target Audience SG6 Revisions R1 R0 Tracking issue View on GitHub Abstract [[P3045R10]](https://wg21.link/p3045r10) models quantities with two abstractions, a delta and a point, both spelled with the `quantity` class template: `quantity<R>` is a delta and `quantity<point<R, PO>>` a point. Neither fits the most common value in a physics equation, an amount measured from a true zero, such as a mass of 5 kg or a thermodynamic temperature of 300 K. A delta has no zero anchor
	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:
	P4411R0	Non-Negative Quantity Specifications	Mateusz Pusz M. Pusz	SG6	2026-10-23	2026-10
Doc Date 2026-10-23 Mailing Date 2026-10 Pre-Búzios Author(s) Mateusz Pusz Target Audience SG6 Abstract Many quantities can’t be negative. No amount of mass, duration, or volume is below zero, and ISO 80000-3 defines speed as the magnitude of velocity. [[P3045R10]](https://wg21.link/p3045r10) has no way to express this. This is why every function that relies on it repeats a precondition, and every reviewer has to guess which parameters carry the guarantee.
	P4412R0	Range-Validated Quantity Points	Mateusz Pusz M. Pusz	SG6	2026-10-23	2026-10
Doc Date 2026-10-23 Mailing Date 2026-10 Pre-Búzios Author(s) Mateusz Pusz Target Audience SG6 Abstract A latitude lies in [−90°,90°][-90°, 90°], a longitude wraps around at ±180°±180°, a drone may fly up to 120m120\ \mathrm{m} above the ground, and a clinical thermometer that reports 51°C51\ \mathrm{°C} is broken and its reading must not reach the code that doses a drug.

Showing 4 of 4 papers · source: open-std.org

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