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Add UTF-8 Parse/TryParse/TryFormat polyfills for BigInteger and Complex #609

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Merged
SimonCropp merged 1 commit into from
Sep 17, 2026
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Add UTF-8 Parse/TryParse/TryFormat polyfills for BigInteger and Complex #609

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44 changes: 22 additions & 22 deletions apiCount.include.md
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**API count: 1172**
**API count: 1180**

### Per Target Framework

| Target | APIs |
| -- | -- |
| `net461` | 1078 |
| `net462` | 1078 |
| `net47` | 1077 |
| `net471` | 1076 |
| `net472` | 1072 |
| `net48` | 1072 |
| `net481` | 1072 |
| `netstandard2.0` | 1074 |
| `netstandard2.1` | 907 |
| `netcoreapp2.0` | 997 |
| `netcoreapp2.1` | 920 |
| `netcoreapp2.2` | 920 |
| `netcoreapp3.0` | 881 |
| `netcoreapp3.1` | 880 |
| `net5.0` | 758 |
| `net6.0` | 654 |
| `net7.0` | 513 |
| `net8.0` | 392 |
| `net9.0` | 245 |
| `net10.0` | 182 |
| `net461` | 1084 |
| `net462` | 1084 |
| `net47` | 1083 |
| `net471` | 1082 |
| `net472` | 1078 |
| `net48` | 1078 |
| `net481` | 1078 |
| `netstandard2.0` | 1080 |
| `netstandard2.1` | 913 |
| `netcoreapp2.0` | 1003 |
| `netcoreapp2.1` | 926 |
| `netcoreapp2.2` | 926 |
| `netcoreapp3.0` | 887 |
| `netcoreapp3.1` | 886 |
| `net5.0` | 764 |
| `net6.0` | 660 |
| `net7.0` | 521 |
| `net8.0` | 400 |
| `net9.0` | 253 |
| `net10.0` | 190 |
| `net11.0` | 58 |
| `uap10.0` | 1064 |
| `uap10.0` | 1070 |
17 changes: 17 additions & 0 deletions api_list.include.md
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* `bool TryEncodeToChars(ReadOnlySpan<byte>, Span<char>, int)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.buffers.text.base64.tryencodetochars?view=net-11.0)


#### BigInteger

* `BigInteger Parse(ReadOnlySpan<byte>, IFormatProvider?)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.numerics.biginteger.parse?view=net-11.0#system-numerics-biginteger-parse(system-readonlyspan((system-byte))-system-iformatprovider))
* `BigInteger Parse(ReadOnlySpan<byte>, NumberStyles, IFormatProvider?)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.numerics.biginteger.parse?view=net-11.0#system-numerics-biginteger-parse(system-readonlyspan((system-byte))-system-globalization-numberstyles-system-iformatprovider))
* `bool TryFormat(Span<byte>, int, ReadOnlySpan<char>, IFormatProvider?)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.numerics.biginteger.tryformat?view=net-11.0#system-numerics-biginteger-tryformat(system-span((system-byte))-system-int32@-system-readonlyspan((system-char))-system-iformatprovider))
* `bool TryParse(ReadOnlySpan<byte>, BigInteger)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.numerics.biginteger.tryparse?view=net-11.0#system-numerics-biginteger-tryparse(system-readonlyspan((system-byte))-system-numerics-biginteger@))
* `bool TryParse(ReadOnlySpan<byte>, IFormatProvider?, BigInteger)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.numerics.biginteger.tryparse?view=net-11.0#system-numerics-biginteger-tryparse(system-readonlyspan((system-byte))-system-iformatprovider-system-numerics-biginteger@))
* `bool TryParse(ReadOnlySpan<byte>, NumberStyles, IFormatProvider?, BigInteger)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.numerics.biginteger.tryparse?view=net-11.0#system-numerics-biginteger-tryparse(system-readonlyspan((system-byte))-system-globalization-numberstyles-system-iformatprovider-system-numerics-biginteger@))


#### BinaryPrimitives

* `double ReadDoubleBigEndian(ReadOnlySpan<byte>)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.buffers.binary.binaryprimitives.readdoublebigendian?view=net-11.0)
Expand Down Expand Up @@ -199,6 +209,13 @@
* Note: Derived from invariant casing, so the mapping follows the Unicode version of the running framework rather than the one net11 is built against.


#### Complex

* `bool TryParse(ReadOnlySpan<byte>, IFormatProvider?, Complex)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.numerics.complex.tryparse?view=net-11.0#system-numerics-complex-tryparse(system-readonlyspan((system-byte))-system-iformatprovider-system-numerics-complex@))
* `bool TryParse(ReadOnlySpan<byte>, NumberStyles, IFormatProvider?, Complex)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.numerics.complex.tryparse?view=net-11.0#system-numerics-complex-tryparse(system-readonlyspan((system-byte))-system-globalization-numberstyles-system-iformatprovider-system-numerics-complex@))
* Note: The matching Parse(ReadOnlySpan<byte>, ...) overloads are not polyfilled, since they would collide with BigInteger.Parse(ReadOnlySpan<byte>, ...); two static extension members with the same signature cannot coexist on one class.


#### ConcurrentBag<T>

* `void Clear<T>()` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.collections.concurrent.concurrentbag-1.clear?view=net-11.0)
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80 changes: 40 additions & 40 deletions assemblySize.include.md
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| | Empty Assembly | With Polyfill | Diff | Ensure | ArgumentExceptions | StringInterpolation | Nullability |
|----------------|----------------|---------------|-----------|-----------|--------------------|---------------------|-------------|
| netstandard2.0 | 8.0KB | 387.0KB | +379.0KB | +9.0KB | +6.5KB | +9.0KB | +13.5KB |
| netstandard2.1 | 8.5KB | 343.0KB | +334.5KB | +9.0KB | +6.5KB | +9.0KB | +14.0KB |
| net461 | 8.5KB | 386.0KB | +377.5KB | +9.0KB | +6.0KB | +9.0KB | +13.5KB |
| net462 | 7.0KB | 389.5KB | +382.5KB | +8.5KB | +6.5KB | +9.0KB | +13.5KB |
| net47 | 7.0KB | 389.0KB | +382.0KB | +9.0KB | +6.5KB | +9.0KB | +13.5KB |
| net471 | 8.5KB | 388.0KB | +379.5KB | +9.0KB | +6.5KB | +9.0KB | +14.0KB |
| net472 | 8.5KB | 387.0KB | +378.5KB | +9.0KB | +6.5KB | +9.0KB | +13.5KB |
| net48 | 8.5KB | 387.0KB | +378.5KB | +9.0KB | +6.5KB | +9.0KB | +13.5KB |
| net481 | 8.5KB | 387.0KB | +378.5KB | +9.0KB | +6.5KB | +9.0KB | +13.5KB |
| netcoreapp2.0 | 9.0KB | 365.0KB | +356.0KB | +9.0KB | +6.5KB | +9.0KB | +13.5KB |
| netcoreapp2.1 | 9.0KB | 347.0KB | +338.0KB | +9.0KB | +6.5KB | +9.0KB | +14.0KB |
| netcoreapp2.2 | 9.0KB | 347.0KB | +338.0KB | +9.0KB | +6.5KB | +9.0KB | +14.0KB |
| netcoreapp3.0 | 9.5KB | 345.5KB | +336.0KB | +8.5KB | +6.0KB | +9.0KB | +13.5KB |
| netcoreapp3.1 | 9.5KB | 343.5KB | +334.0KB | +9.0KB | +6.5KB | +9.0KB | +14.0KB |
| net5.0 | 9.5KB | 309.0KB | +299.5KB | +9.0KB | +6.5KB | +9.0KB | +14.0KB |
| net6.0 | 10.0KB | 250.0KB | +240.0KB | +10.0KB | +7.0KB | +512bytes | +3.5KB |
| net7.0 | 10.0KB | 218.5KB | +208.5KB | +9.5KB | +6.0KB | +1.0KB | +3.5KB |
| net8.0 | 9.5KB | 189.5KB | +180.0KB | +8.0KB | | +512bytes | +3.0KB |
| net9.0 | 9.5KB | 118.0KB | +108.5KB | +8.5KB | | +512bytes | +3.5KB |
| net10.0 | 10.0KB | 93.5KB | +83.5KB | +8.5KB | | +512bytes | +3.0KB |
| netstandard2.0 | 8.0KB | 388.5KB | +380.5KB | +9.0KB | +6.5KB | +9.0KB | +13.5KB |
| netstandard2.1 | 8.5KB | 344.5KB | +336.0KB | +9.0KB | +6.5KB | +9.0KB | +14.0KB |
| net461 | 8.5KB | 387.0KB | +378.5KB | +9.5KB | +6.5KB | +9.0KB | +14.0KB |
| net462 | 7.0KB | 391.0KB | +384.0KB | +8.5KB | +6.5KB | +9.0KB | +13.5KB |
| net47 | 7.0KB | 390.5KB | +383.5KB | +9.0KB | +6.5KB | +9.0KB | +13.5KB |
| net471 | 8.5KB | 389.5KB | +381.0KB | +9.0KB | +6.5KB | +9.0KB | +14.0KB |
| net472 | 8.5KB | 388.5KB | +380.0KB | +9.0KB | +6.5KB | +9.0KB | +13.5KB |
| net48 | 8.5KB | 388.5KB | +380.0KB | +9.0KB | +6.5KB | +9.0KB | +13.5KB |
| net481 | 8.5KB | 388.5KB | +380.0KB | +9.0KB | +6.5KB | +9.0KB | +13.5KB |
| netcoreapp2.0 | 9.0KB | 366.5KB | +357.5KB | +8.5KB | +6.5KB | +9.0KB | +13.5KB |
| netcoreapp2.1 | 9.0KB | 348.5KB | +339.5KB | +9.0KB | +6.5KB | +9.0KB | +14.0KB |
| netcoreapp2.2 | 9.0KB | 348.5KB | +339.5KB | +9.0KB | +6.5KB | +9.0KB | +14.0KB |
| netcoreapp3.0 | 9.5KB | 346.5KB | +337.0KB | +9.5KB | +7.0KB | +9.5KB | +14.0KB |
| netcoreapp3.1 | 9.5KB | 345.0KB | +335.5KB | +9.0KB | +6.5KB | +9.0KB | +14.0KB |
| net5.0 | 9.5KB | 310.5KB | +301.0KB | +9.0KB | +6.5KB | +9.0KB | +14.0KB |
| net6.0 | 10.0KB | 251.5KB | +241.5KB | +10.0KB | +7.0KB | +512bytes | +3.5KB |
| net7.0 | 10.0KB | 221.0KB | +211.0KB | +9.0KB | +5.5KB | +512bytes | +3.5KB |
| net8.0 | 9.5KB | 191.5KB | +182.0KB | +8.5KB | | +512bytes | +3.0KB |
| net9.0 | 9.5KB | 120.0KB | +110.5KB | +8.5KB | | +512bytes | +3.5KB |
| net10.0 | 10.0KB | 95.5KB | +85.5KB | +8.5KB | | +512bytes | +3.5KB |
| net11.0 | 10.0KB | 21.0KB | +11.0KB | +9.0KB | | +512bytes | +3.5KB |


### Assembly Sizes with EmbedUntrackedSources

| | Empty Assembly | With Polyfill | Diff | Ensure | ArgumentExceptions | StringInterpolation | Nullability |
|----------------|----------------|---------------|-----------|-----------|--------------------|---------------------|-------------|
| netstandard2.0 | 8.0KB | 563.3KB | +555.3KB | +16.7KB | +8.2KB | +13.9KB | +18.9KB |
| netstandard2.1 | 8.5KB | 492.3KB | +483.8KB | +16.7KB | +8.2KB | +13.9KB | +19.4KB |
| net461 | 8.5KB | 563.3KB | +554.8KB | +16.7KB | +7.7KB | +13.9KB | +18.9KB |
| net462 | 7.0KB | 566.8KB | +559.8KB | +16.2KB | +8.2KB | +13.9KB | +18.9KB |
| net47 | 7.0KB | 566.1KB | +559.1KB | +16.7KB | +8.2KB | +13.9KB | +18.9KB |
| net471 | 8.5KB | 564.7KB | +556.2KB | +16.7KB | +8.2KB | +13.9KB | +19.4KB |
| net472 | 8.5KB | 562.6KB | +554.1KB | +16.7KB | +8.2KB | +13.9KB | +18.9KB |
| net48 | 8.5KB | 562.6KB | +554.1KB | +16.7KB | +8.2KB | +13.9KB | +18.9KB |
| net481 | 8.5KB | 562.6KB | +554.1KB | +16.7KB | +8.2KB | +13.9KB | +18.9KB |
| netcoreapp2.0 | 9.0KB | 530.7KB | +521.7KB | +16.7KB | +8.2KB | +13.9KB | +18.9KB |
| netcoreapp2.1 | 9.0KB | 500.5KB | +491.5KB | +16.7KB | +8.2KB | +13.9KB | +19.4KB |
| netcoreapp2.2 | 9.0KB | 500.5KB | +491.5KB | +16.7KB | +8.2KB | +13.9KB | +19.4KB |
| netcoreapp3.0 | 9.5KB | 492.3KB | +482.8KB | +16.2KB | +7.7KB | +13.9KB | +18.9KB |
| netcoreapp3.1 | 9.5KB | 490.3KB | +480.8KB | +16.7KB | +8.2KB | +13.9KB | +19.4KB |
| net5.0 | 9.5KB | 438.4KB | +428.9KB | +16.7KB | +8.2KB | +13.9KB | +19.4KB |
| net6.0 | 10.0KB | 359.2KB | +349.2KB | +17.7KB | +8.7KB | +1.1KB | +4.2KB |
| net7.0 | 10.0KB | 310.9KB | +300.9KB | +17.1KB | +7.4KB | +1.6KB | +4.2KB |
| net8.0 | 9.5KB | 268.1KB | +258.6KB | +15.5KB | +299bytes | +1.1KB | +3.7KB |
| net9.0 | 9.5KB | 170.6KB | +161.1KB | +16.0KB | | +1.1KB | +4.2KB |
| net10.0 | 10.0KB | 136.1KB | +126.1KB | +16.0KB | | +1.1KB | +3.7KB |
| netstandard2.0 | 8.0KB | 565.4KB | +557.4KB | +16.7KB | +8.2KB | +13.9KB | +18.9KB |
| netstandard2.1 | 8.5KB | 494.4KB | +485.9KB | +16.7KB | +8.2KB | +13.9KB | +19.4KB |
| net461 | 8.5KB | 564.9KB | +556.4KB | +17.2KB | +8.2KB | +13.9KB | +19.4KB |
| net462 | 7.0KB | 568.9KB | +561.9KB | +16.2KB | +8.2KB | +13.9KB | +18.9KB |
| net47 | 7.0KB | 568.2KB | +561.2KB | +16.7KB | +8.2KB | +13.9KB | +18.9KB |
| net471 | 8.5KB | 566.8KB | +558.3KB | +16.7KB | +8.2KB | +13.9KB | +19.4KB |
| net472 | 8.5KB | 564.7KB | +556.2KB | +16.7KB | +8.2KB | +13.9KB | +18.9KB |
| net48 | 8.5KB | 564.7KB | +556.2KB | +16.7KB | +8.2KB | +13.9KB | +18.9KB |
| net481 | 8.5KB | 564.7KB | +556.2KB | +16.7KB | +8.2KB | +13.9KB | +18.9KB |
| netcoreapp2.0 | 9.0KB | 532.8KB | +523.8KB | +16.2KB | +8.2KB | +13.9KB | +18.9KB |
| netcoreapp2.1 | 9.0KB | 502.6KB | +493.6KB | +16.7KB | +8.2KB | +13.9KB | +19.4KB |
| netcoreapp2.2 | 9.0KB | 502.6KB | +493.6KB | +16.7KB | +8.2KB | +13.9KB | +19.4KB |
| netcoreapp3.0 | 9.5KB | 494.0KB | +484.5KB | +17.2KB | +8.7KB | +14.4KB | +19.4KB |
| netcoreapp3.1 | 9.5KB | 492.4KB | +482.9KB | +16.7KB | +8.2KB | +13.9KB | +19.4KB |
| net5.0 | 9.5KB | 440.5KB | +431.0KB | +16.7KB | +8.2KB | +13.9KB | +19.4KB |
| net6.0 | 10.0KB | 361.3KB | +351.3KB | +17.7KB | +8.7KB | +1.1KB | +4.2KB |
| net7.0 | 10.0KB | 314.3KB | +304.3KB | +16.6KB | +6.9KB | +1.1KB | +4.2KB |
| net8.0 | 9.5KB | 271.0KB | +261.5KB | +16.0KB | +299bytes | +1.1KB | +3.7KB |
| net9.0 | 9.5KB | 173.6KB | +164.1KB | +16.0KB | | +1.1KB | +4.2KB |
| net10.0 | 10.0KB | 139.1KB | +129.1KB | +16.0KB | | +1.1KB | +4.2KB |
| net11.0 | 10.0KB | 30.9KB | +20.9KB | +16.5KB | | +1.1KB | +4.2KB |
2 changes: 1 addition & 1 deletion claude.md
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Expand Up @@ -54,7 +54,7 @@ The NuGet package ships `.cs` files (not a DLL). The `Polyfill.nuspec` packs fil
Polyfill uses extensive `#if` directives. Key constants:

- **Framework constants**: `NETFRAMEWORK`, `NETSTANDARD`, `NETCOREAPP2X`, `NETCOREAPP3X`, `NET46X`, `NET47X`, `NET48X`
- **Feature constants** (set by `Polyfill.targets` based on referenced packages): `FeatureMemory`, `FeatureValueTask`, `FeatureValueTuple`, `FeatureRuntimeInformation`, `FeatureHttp`, `FeatureCompression`, `FeatureAsyncInterfaces`
- **Feature constants** (set by `Polyfill.targets` based on referenced packages): `FeatureMemory`, `FeatureValueTask`, `FeatureValueTuple`, `FeatureRuntimeInformation`, `FeatureHttp`, `FeatureCompression`, `FeatureNumerics`, `FeatureAsyncInterfaces`
- **Consumer options**: `PolyPublic` (makes APIs public), `PolyUseEmbeddedAttribute`, `PolyEnsure`, `PolyGuard`, `PolyNullability`, `PolyArgumentExceptions`, `PolyStringInterpolation`
- **`AllowUnsafeBlocks`** — enables unsafe polyfill variants for better performance

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