DurationRounding

Selects explicit mathematical rounding when converting finite time units.

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Module std.time

import std.time;

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DurationRounding

pub enum DurationRounding

Selects explicit mathematical rounding when converting finite time units.

Exact never truncates. Floor/Ceil refer to signed numerical direction, so a negative magnitude may round differently from a positive one. NearestEven breaks exact half-tick ties toward an even target count. No mode yields infinity.

DurationRounding.Exact

Exact;

Rejects any fractional target tick.

DurationRounding.Floor

Floor;

Rounds toward negative infinity.

DurationRounding.Ceil

Ceil;

Rounds toward positive infinity.

DurationRounding.NearestEven

NearestEven;

Rounds to nearest, breaking equal-distance ties toward even.

Documentation snapshot: October 24, 2026 About versions ↗