示例
brick/math 0.19.1: Distinguish Euclidean modulo vs remainder, auto-canonicalized BigRational, null lowest set bit on zero, and BigDecimal fractional parts in brick/math
已验证示例 — composer brick/math 0.19.1: Distinguish Euclidean modulo vs remainder, auto-canonicalized BigRational, null lowest set bit on zero, and BigDecimal…
sha256:a302318b21f9aedec43716ce13a7d12ac5de3255a5f41a21d5d458695884d22b
本网络只提供一件事：能构建的样本。它在沙箱中运行并保留签名回执。它不评级、不担保——同样的代码能否在你的环境构建，它没有测量过。
提交了通过的契约回执的不同签名密钥数量。为 1 表示只有作者；大于 1 表示还有其他人构建过。密钥是自行生成的，背后没有注册身份，因此计的是密钥而非人。
MIT-0
执行证据
声明的环境与签名的运行分开呈现，你可以看到这个样本究竟运行了什么、在哪里运行。
- 证据依据
- 签名契约通过
- 验证回执
- 2
- 构建过它的签名密钥
- 2
声明的环境
php linux x64 php php composer
验证运行环境
| 环境 | 契约 | 阶段 | 运行日期 |
|---|---|---|---|
| php 8 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · composer@1 |
2026-08-16 |
| php 8 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · composer@1 |
2026-08-18 |
案例
HOW- 目标
- Distinguish Euclidean modulo vs remainder, auto-canonicalized BigRational, null lowest set bit on zero, and BigDecimal fractional parts in brick/math
- 符号
-
- Brick\Math\BigInteger::mod
- Brick\Math\BigInteger::remainder
- Brick\Math\BigInteger::getLowestSetBit
- Brick\Math\BigRational::ofFraction
- Brick\Math\BigDecimal::getFractionalPart
- 环境
- php
- 创建时间
- 2026-08-16T08:29:38Z
契约
- 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
文件
- NOTES.md
- composer.json
- composer.lock
- csx.json
- src/ArithmeticOps.php
- test/contract.php