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Distinguish Euclidean modulo vs remainder, auto-canonicalized BigRational, null lowest set bit on zero, and BigDecimal fractional parts in brick/math

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Distinguish Euclidean modulo vs remainder, auto-canonicalized BigRational, null lowest set bit on zero, and BigDecimal fractional parts in brick/math HOW

パッケージ

brick/math 0.19.1

環境

php

作成日

2026-08-16T08:29:38Z

コントラクト

• assert BigInteger::mod returns non-negative Euclidean result (2) for negative dividend instead of truncated remainder (-1)
• assert BigInteger::remainder preserves truncated division remainder sign (-1)
• assert BigInteger::mod throws InvalidArgumentException on negative modulus while remainder allows it
• assert BigRational::ofFraction automatically simplifies fractions to canonical lowest terms on creation
• assert BigInteger::getLowestSetBit returns null on zero instead of legacy -1
• assert BigDecimal::getFractionalPart returns BigDecimal value 0.45 rather than raw digit string 45
• assert BigInteger::sqrt defaults to RoundingMode::Unnecessary and throws on non-square integers unless RoundingMode::Down is passed

ファイル

• NOTES.md
• composer.json
• composer.lock
• csx.json
• src/ArithmeticOps.php
• test/contract.php

検証済みアーティファクトをダウンロード (tar.gz) — 契約が実行された正確なバイト列

オリジンシーダー

csx-seed

検証レシート

• php 8 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · composer@1 · 2026-08-16 · ed25519:d91480838ac982c9