# A Tiny SIMD Vector Crate 🏹

🚩 Works only on the x86_64 CPU architecture with the AVX2 and FMA extensions!

They can be enabled by putting these lines inside .cargo/config.toml, located either at the root of your project or in the installation directory of cargo: toml [build] rustflags = ["-Ctarget-feature=+avx2,+fma"]

## Highlights

• The motivation behind this crate is to provide fast vectors for small computer graphics projects.

• Straightforward implementation without macro trickery. Explore the source code to see how everything is done!

  Data types

• Double precision:

  • Dvec2 - 2D vector
  • Dvec4 - 4D vector
  • Dmat4 - 4x4 matrix

• Single precision:

  • Fvec2 - 2D vector (this one is not SIMD)
  • Fvec4 - 4D vetcor
  • Fmat4 - 4x4 matrix

  Available operations

• Arithmetics (+, -, * and /):

  • Add, subtract, multiply or divide two vectors, or a vector with a scalar, componentwise.
  • Add or subtract two matrices.
  • Multiply two matrices.
  • Multiply a matrix by a vector.

• Methods:

  • Operations on one vector: componentwise floor
  • Operations on two vectors: dot product, cross product, componentwise minimum and maximum.
  • Reduce a single vector: minimun and maximum across all components.
  • Invert a matrix that belongs to SE(3), i.e. a transformation matrix.
  • Transpose a matrix.

  Crate features

• Enable the crate feature bytemuck to mark all vectors as Plain Old Data.