1pub mod encoding;
  2#[allow(non_camel_case_types, non_snake_case, non_upper_case_globals, dead_code, improper_ctypes)]
  3// Other modules and exports
  4pub mod ffi;
  5pub mod infos;
  6pub mod module;
  7pub mod sampling;
  8pub mod stats;
  9pub mod svp;
 10pub mod vec_znx;
 11pub mod vec_znx_big;
 12pub mod vec_znx_dft;
 13pub mod vmp;
 14
 15pub use encoding::*;
 16pub use infos::*;
 17pub use module::*;
 18pub use sampling::*;
 19#[allow(unused_imports)]
 20pub use stats::*;
 21pub use svp::*;
 22pub use vec_znx::*;
 23pub use vec_znx_big::*;
 24pub use vec_znx_dft::*;
 25pub use vmp::*;
 26
 27pub const GALOISGENERATOR: u64 = 5;
 28pub const DEFAULTALIGN: usize = 64;
 29
 30#[derive(Copy, Clone)]
 31#[repr(u8)]
 32pub enum LAYOUT {
 33    ROW,
 34    COL,
 35}
 36
 37
 38pub fn is_aligned_custom<T>(ptr: *const T, align: usize) -> bool {
 39    (ptr as usize) % align == 0
 40}
 41
 42pub fn is_aligned<T>(ptr: *const T) -> bool {
 43    is_aligned_custom(ptr, DEFAULTALIGN)
 44}
 45
 46pub fn assert_alignement<T>(ptr: *const T) {
 47    assert!(
 48        is_aligned(ptr),
 49        "invalid alignement: ensure passed bytes have been allocated with [alloc_aligned_u8] or [alloc_aligned]"
 50    )
 51}
 52
 53pub fn cast<T, V>(data: &[T]) -> &[V] {
 54    let ptr: *const V = data.as_ptr() as *const V;
 55    let len: usize = data.len() / std::mem::size_of::<V>();
 56    unsafe { std::slice::from_raw_parts(ptr, len) }
 57}
 58
 59pub fn cast_mut<T, V>(data: &[T]) -> &mut [V] {
 60    let ptr: *mut V = data.as_ptr() as *mut V;
 61    let len: usize = data.len() / std::mem::size_of::<V>();
 62    unsafe { std::slice::from_raw_parts_mut(ptr, len) }
 63}
 64
 65use std::alloc::{Layout, alloc};
 66use std::ptr;
 67
 68/// Allocates a block of bytes with a custom alignement.
 69/// Alignement must be a power of two and size a multiple of the alignement.
 70/// Allocated memory is initialized to zero.
 71pub fn alloc_aligned_custom_u8(size: usize, align: usize) -> Vec<u8> {
 72    assert!(
 73        align.is_power_of_two(),
 74        "Alignment must be a power of two but is {}",
 75        align
 76    );
 77    assert_eq!(
 78        (size * std::mem::size_of::<u8>()) % align,
 79        0,
 80        "size={} must be a multiple of align={}",
 81        size,
 82        align
 83    );
 84    unsafe {
 85        let layout: Layout = Layout::from_size_align(size, align).expect("Invalid alignment");
 86        let ptr: *mut u8 = alloc(layout);
 87        if ptr.is_null() {
 88            panic!("Memory allocation failed");
 89        }
 90        assert!(
 91            is_aligned_custom(ptr, align),
 92            "Memory allocation at {:p} is not aligned to {} bytes",
 93            ptr,
 94            align
 95        );
 96        // Init allocated memory to zero
 97        ptr::write_bytes(ptr, 0, size);
 98        Vec::from_raw_parts(ptr, size, size)
 99    }
100}
101
102/// Allocates a block of bytes aligned with [DEFAULTALIGN].
103/// Size must be amultiple of [DEFAULTALIGN].
104/// /// Allocated memory is initialized to zero.
105pub fn alloc_aligned_u8(size: usize) -> Vec<u8> {
106    alloc_aligned_custom_u8(size, DEFAULTALIGN)
107}
108
109/// Allocates a block of T aligned with [DEFAULTALIGN].
110/// Size of T * size msut be a multiple of [DEFAULTALIGN].
111pub fn alloc_aligned_custom<T>(size: usize, align: usize) -> Vec<T> {
112    assert_eq!(
113        (size * std::mem::size_of::<T>()) % align,
114        0,
115        "size={} must be a multiple of align={}",
116        size,
117        align
118    );
119    let mut vec_u8: Vec<u8> = alloc_aligned_custom_u8(std::mem::size_of::<T>() * size, align);
120    let ptr: *mut T = vec_u8.as_mut_ptr() as *mut T;
121    let len: usize = vec_u8.len() / std::mem::size_of::<T>();
122    let cap: usize = vec_u8.capacity() / std::mem::size_of::<T>();
123    std::mem::forget(vec_u8);
124    unsafe { Vec::from_raw_parts(ptr, len, cap) }
125}
126
127pub fn alloc_aligned<T>(size: usize) -> Vec<T> {
128    alloc_aligned_custom::<T>(size, DEFAULTALIGN)
129}