docs: Fixing typos to poulpy-hal/README.md

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# 🐙 Poulpy-HAL
**Poulpy-HAL** is a Rust crate that provide backend agnostic layouts and trait-based low-level lattice arithmetic matching the API of [**spqlios-arithmetic**](https://github.com/tfhe/spqlios-arithmetic). This allows developpers to implement lattice-based schemes generically, with the ability to plug in any optimized backends (e.g. CPU, GPU, FPGA) at runtime.
**Poulpy-HAL** is a Rust crate that provides backend agnostic layouts and trait-based low-level lattice arithmetic matching the API of [**spqlios-arithmetic**](https://github.com/tfhe/spqlios-arithmetic). This allows developers to implement lattice-based schemes generically, with the ability to plug in any optimized backends (e.g. CPU, GPU, FPGA) at runtime.
## Crate Organization
### **poulpy-hal/layouts**
This module defines backend agnostic layouts following **spqlios-arithmetic** types. There are two main types to distinguish from: user facing types and backend types. User facing types, such as `vec_znx`, serve both as the input and output of computations, while backend types, such as `svp_ppol` (a.k.a. scalar vector product prepared polynomial), are pre-processed write-only types stored in a backend-specific representation for optimized evaluation. For example in FFT64 AVX2 CPU implementation, an `svp_ppol`, which is the prepared type of `scalar_znx`, is stored in DFT with an AVX optimized data ordering.
This module defines backend agnostic layouts following **spqlios-arithmetic** types. There are two main types to distinguish from: user facing types and backend types. User facing types, such as `vec_znx`, serve both as the input and output of computations, while backend types, such as `svp_ppol` (a.k.a. scalar vector product prepared polynomial), are pre-processed write-only types stored in a backend-specific representation for optimized evaluation. For example, in FFT64 AVX2 CPU implementation, an `svp_ppol`, which is the prepared type of `scalar_znx`, is stored in DFT with an AVX optimized data ordering.
This module also provide various helpers over these types, as well as serialization for the front end types `scalar_znx`, `vec_znx` and `mat_znx`.
This module also provides various helpers over these types, as well as serialization for the front end types `scalar_znx`, `vec_znx` and `mat_znx`.
#### Module
@@ -20,7 +20,7 @@ A `scalar_znx` is a front-end generic and backend agnostic type that stores a si
#### VecZnx
A `vec_znx` is a front-end generic and backend agnostic type that stores a vector of small polynomials (i.e. a vector of scalars). Each polynomial is a `limb` that provides an additional `base2k`-bits of precision in the Torus. For example a `vec_znx` with `n`=1024 `base2k`=2 with 3 limbs can store 1024 coefficients with 36 bits of precision in the torus. In practice this type is used for LWE and GLWE ciphertexts/plaintexts.
A `vec_znx` is a front-end generic and backend agnostic type that stores a vector of small polynomials (i.e. a vector of scalars). Each polynomial is a `limb` that provides an additional `base2k`-bits of precision in the Torus. For example a `vec_znx` with `n`=1024 `base2k`=2 with 3 limbs can store 1024 coefficients with 36 bits of precision in the torus. In practice, this type is used for LWE and GLWE ciphertexts/plaintexts.
#### VecZnxDft
@@ -30,12 +30,12 @@ A `vec_znx_dft` is a backend-specific type that stores a `vec_znx` in the DFT do
#### VecZnxBig
A `vec_znx_big` is a backend-specific type that stores a `vec_znx` with big coefficient, for example the result of a scalar multiplication or a polynomial convolution. It can be mapped back to a `vec_znx` by applying a normalization step.
A `vec_znx_big` is a backend-specific type that stores a `vec_znx` with big coefficient, for example, the result of a scalar multiplication or a polynomial convolution. It can be mapped back to a `vec_znx` by applying a normalization step.
#### MatZnx
A `mat_znx` is a front-end generic and backend agnostic type that stores a matrix of small polynomials (i.e. a matrix of scalars). Each row of the matrix is a `vec_znx`. In practice this type is used for GGLWE and GGSW ciphertexts/plaintexts.
A `mat_znx` is a front-end generic and backend agnostic type that stores a matrix of small polynomials (i.e. a matrix of scalars). Each row of the matrix is a `vec_znx`. In practice, this type is used for GGLWE and GGSW ciphertexts/plaintexts.
#### SvpPPol
@@ -48,7 +48,7 @@ A `vmp_pmat` (vector matrix product prepared matrix) is a backend-specific type
#### Scratch
A `scratch` is a backend agnostic scratch space manager which allows to borrows bytes or structs for intermediate computations.
A `scratch` is a backend agnostic scratch space manager which allows to borrow bytes or structs for intermediate computations.
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@@ -61,7 +61,7 @@ This module provides the user facing traits-based API of the hardware accelerati
### **poulpy-hal/oep**
This module provides open extension points, that can be implemented to provide a concrete backend to crates implementing lattice-based arithmetic using **`poulpy-hal/api`** and **`poulpy-hal/layouts`**, such as **`poulpy-core`** and **`poulpy-schemes`** or any other project/application.
This module provides open extension points that can be implemented to provide a concrete backend to crates implementing lattice-based arithmetic using **`poulpy-hal/api`** and **`poulpy-hal/layouts`**, such as **`poulpy-core`** and **`poulpy-schemes`** or any other project/application.
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