zeekayandHanzo Dev cd2dddfeae legal: relicense to MIT OR Apache-2.0 (HIP-0137)
HIP-0137 "One License" (hanzoai/hips, HIPs/hip-0137-one-license.md) puts
BSD-3-Clause out of scope for hanzoai: original Hanzo work takes the standard
MIT OR Apache-2.0 dual licence, and only forks keep an upstream licence.

LICENSE is now the dual declaration; LICENSE-APACHE and LICENSE-MIT carry the
two texts beside it. The existing copyright holder and years are preserved
verbatim.

Provenance: stdlib-only dependency graph, written from scratch. The one
per-file BSD-3-Clause header moved with it.

Co-authored-by: Hanzo Dev <[email protected]>
2026-08-04 01:20:09 -07:00

decimal

Exact, arbitrary-precision fixed-point decimal for Go. A value is coefficient × 10⁻ˢᶜᵃˡᵉ with a big.Int coefficient — no precision ceiling, no float, immutable.

Unlike int64/uint64 decimal & money libraries (which cap around 19 digits — about $9.20 at 18 decimals), this holds a fiat cent and an 18-decimal on-chain wei balance with equal exactness. 0.1 + 0.2 is exactly 0.3.

d := decimal.MustParse("6.60")
cost := decimal.New(200, 0).Mul(d).Quo(decimal.New(1_000_000, 0), 18) // 200 tokens @ $6.60/1M
cost.String() // "0.00132"  (never floored to 0)

The numeric core beneath hanzoai/money. Stdlib only. MIT OR Apache-2.0, at your option — per HIP-0137.

S
Description
Exact big.Int fixed-point decimal for Go — no precision ceiling, no float
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