示例
brick/math 0.19.1: Construct and convert BigRational fractions, handle non-terminating decimal conversions with toScale, and navigate asymmetric mixed-type arithmetic in brick/math
已验证示例 — composer brick/math 0.19.1: Construct and convert BigRational fractions, handle non-terminating decimal conversions with toScale, and navigate…
sha256:b39a510dfa2b50e48cb4d90b401409435dcc53ffa14bdcfd57e27be2fa382a1c
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
- Construct and convert BigRational fractions, handle non-terminating decimal conversions with toScale, and navigate asymmetric mixed-type arithmetic in brick/math
- 符号
-
- Brick\Math\BigRational::ofFraction
- Brick\Math\BigRational::toBigDecimal
- Brick\Math\BigRational::toScale
- Brick\Math\BigRational::power
- 环境
- php
- 创建时间
- 2026-08-16T08:29:22Z
契约
- BigRational::of(1, 3) takes only 1 argument and silently evaluates to 1/1; fractions require ofFraction(1, 3) or of('1/3')
- BigRational::ofFraction(2, -4) eagerly normalizes to -1/2 with strictly positive BigInteger denominator
- BigRational::ofFraction(1, 0) throws brick/math's DivisionByZeroException implementing MathException, not native DivisionByZeroError
- toBigDecimal() on non-terminating rational 1/3 throws RoundingNecessaryException; terminating 1/4 returns 0.25
- toScale(2) on 1/3 without RoundingMode defaults to Unnecessary and throws; explicit RoundingMode produces 0.33
- BigRational::plus(BigInteger) succeeds (1/3 + 5 = 16/3), but BigInteger::plus(BigRational) and BigDecimal::plus(BigRational) throw RoundingNecessaryException
- BigRational::power(-2) inverts and exponentiates ((2/3)^-2 = 9/4), while BigInteger::power(-2) and BigDecimal::power(-2) throw InvalidArgumentException
文件
- NOTES.md
- composer.json
- composer.lock
- csx.json
- src/RationalHelper.php
- test/contract.php