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Add GPU simplified mul-mod helper for host callers

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Marek Lemańczyk committed 2025-10-25 02:20:02 +02:00
1 parent 3e081141e0
commit 03194650c9
2 files changed
+11 -2
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PerfectNumbers.Core/ULongExtensions.Gpu.cs
+9 -1
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@@ -19,7 +19,7 @@ public static partial class ULongExtensions
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Obsolete("Deprecated: use ULongExtensions.MulMod64 for CPU code and GpuUInt128.MulMod inside GPU kernels.")]
[Obsolete("Use ULongExtensions.GpuCompatibleMulModSimplifiedExtension for GPU-compatible host code or GpuUInt128.MulMod inside kernels.")]
public static ulong MulMod64Gpu(this ulong a, ulong b, ulong modulus)
{
// TODO: Remove this GPU-compatible shim from production once callers migrate to MulMod64,
@@ -29,6 +29,7 @@ public static partial class ULongExtensions
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Obsolete("Use ULongExtensions.GpuCompatibleMulModSimplifiedExtension for GPU-compatible host code or GpuUInt128.MulMod inside kernels.")]
public static ulong MulMod64GpuDeferred(this ulong a, ulong b, ulong modulus)
{
// TODO: Move this deferred helper to the benchmark suite; the baseline MulMod64 avoids the
@@ -37,6 +38,13 @@ public static partial class ULongExtensions
return state.MulModWithNativeModulo(b, modulus);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static ulong GpuCompatibleMulModSimplifiedExtension(this ulong left, ulong right, ulong modulus)
{
GpuUInt128 state = new(left);
return state.MulModSimplified(right, modulus);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static ulong Pow2ModWindowedGpu(this ulong exponent, ulong modulus)
{