Generic Vectors

GenericVectors is a C# library of vectorized math operations for use with generically-typed arrays. It extends the concept of LINQ expression building for generic math operators from MiscUtil Libary, and applies it to aggregate array operations. This allows performance closer to the non-generic array operations.

Benchmarks

The benchmark included in the project compares the mean time of calculating the dot product between two arrays, using three different methods: a non-generic function, a generic method using MiscUtil generic operators in the loop, and finally using GenericVectors. For all methods, the arrays are of type double.

BenchmarkDotNet=v0.11.1, OS=Windows 10.0.17134.523 (1803/April2018Update/Redstone4)
Unknown processor
Frequency=3312656 Hz, Resolution=301.8726 ns, Timer=TSC
.NET Core SDK=2.2.100-preview1-009349
  [Host]     : .NET Core 2.1.3 (CoreCLR 4.6.26725.06, CoreFX 4.6.26725.05), 64bit RyuJIT
  DefaultJob : .NET Core 2.1.3 (CoreCLR 4.6.26725.06, CoreFX 4.6.26725.05), 64bit RyuJIT

Method	ArrayLength	Mean	Error	StdDev
'Non-generic dot product'	1000	814.9 ns	6.752 ns	6.316 ns
'Dot product using generic operators'	1000	4,631.9 ns	43.085 ns	40.301 ns
'Dot product using GenericVector'	1000	818.9 ns	1.831 ns	1.712 ns
'Non-generic dot product'	10000	8,171.7 ns	57.593 ns	51.055 ns
'Dot product using generic operators'	10000	46,095.2 ns	140.806 ns	131.710 ns
'Dot product using GenericVector'	10000	8,128.5 ns	23.103 ns	20.480 ns
'Non-generic dot product'	100000	81,150.8 ns	165.123 ns	154.457 ns
'Dot product using generic operators'	100000	465,606.7 ns	4,901.236 ns	4,344.818 ns
'Dot product using GenericVector'	100000	81,247.5 ns	168.728 ns	157.828 ns

Types Supported

GenericVectors will work with arrays of these types:

• short
• int
• long
• ushort
• uint
• ulong
• float
• double
• decimal
• System.Numerics.Complex