1use poulpy_hal::layouts::{Backend, Data, DataMut, DataRef, Module, Scratch};
  2
  3use crate::layouts::{
  4    Base2K, Dnum, Dsize, GGLWEInfos, GLWEInfos, GLWEToLWESwitchingKeyToRef, LWEInfos, Rank, RingDegree, TorusPrecision,
  5    prepared::{
  6        GLWESwitchingKeyPrepare, GLWESwitchingKeyPrepared, GLWESwitchingKeyPreparedAlloc, GLWESwitchingKeyPreparedToMut,
  7        GLWESwitchingKeyPreparedToRef,
  8    },
  9};
 10
 11#[derive(PartialEq, Eq)]
 12pub struct GLWEToLWESwitchingKeyPrepared<D: Data, B: Backend>(pub(crate) GLWESwitchingKeyPrepared<D, B>);
 13
 14impl<D: Data, B: Backend> LWEInfos for GLWEToLWESwitchingKeyPrepared<D, B> {
 15    fn base2k(&self) -> Base2K {
 16        self.0.base2k()
 17    }
 18
 19    fn k(&self) -> TorusPrecision {
 20        self.0.k()
 21    }
 22
 23    fn n(&self) -> RingDegree {
 24        self.0.n()
 25    }
 26
 27    fn size(&self) -> usize {
 28        self.0.size()
 29    }
 30}
 31
 32impl<D: Data, B: Backend> GLWEInfos for GLWEToLWESwitchingKeyPrepared<D, B> {
 33    fn rank(&self) -> Rank {
 34        self.rank_out()
 35    }
 36}
 37
 38impl<D: Data, B: Backend> GGLWEInfos for GLWEToLWESwitchingKeyPrepared<D, B> {
 39    fn rank_in(&self) -> Rank {
 40        self.0.rank_in()
 41    }
 42
 43    fn dsize(&self) -> Dsize {
 44        self.0.dsize()
 45    }
 46
 47    fn rank_out(&self) -> Rank {
 48        self.0.rank_out()
 49    }
 50
 51    fn dnum(&self) -> Dnum {
 52        self.0.dnum()
 53    }
 54}
 55
 56pub trait GLWEToLWESwitchingKeyPreparedAlloc<B: Backend>
 57where
 58    Self: GLWESwitchingKeyPreparedAlloc<B>,
 59{
 60    fn alloc_glwe_to_lwe_switching_key_prepared(
 61        &self,
 62        base2k: Base2K,
 63        k: TorusPrecision,
 64        rank_in: Rank,
 65        dnum: Dnum,
 66    ) -> GLWEToLWESwitchingKeyPrepared<Vec<u8>, B> {
 67        GLWEToLWESwitchingKeyPrepared(self.alloc_glwe_switching_key_prepared(base2k, k, rank_in, Rank(1), dnum, Dsize(1)))
 68    }
 69    fn alloc_glwe_to_lwe_switching_key_prepared_from_infos<A>(&self, infos: &A) -> GLWEToLWESwitchingKeyPrepared<Vec<u8>, B>
 70    where
 71        A: GGLWEInfos,
 72    {
 73        debug_assert_eq!(
 74            infos.rank_out().0,
 75            1,
 76            "rank_out > 1 is not supported for GLWEToLWESwitchingKeyPrepared"
 77        );
 78        debug_assert_eq!(
 79            infos.dsize().0,
 80            1,
 81            "dsize > 1 is not supported for GLWEToLWESwitchingKeyPrepared"
 82        );
 83        self.alloc_glwe_to_lwe_switching_key_prepared(infos.base2k(), infos.k(), infos.rank_in(), infos.dnum())
 84    }
 85
 86    fn bytes_of_glwe_to_lwe_switching_key_prepared(&self, base2k: Base2K, k: TorusPrecision, rank_in: Rank, dnum: Dnum) -> usize {
 87        self.bytes_of_glwe_switching_key_prepared(base2k, k, rank_in, Rank(1), dnum, Dsize(1))
 88    }
 89
 90    fn bytes_of_glwe_to_lwe_switching_key_prepared_from_infos<A>(&self, infos: &A) -> usize
 91    where
 92        A: GGLWEInfos,
 93    {
 94        debug_assert_eq!(
 95            infos.rank_out().0,
 96            1,
 97            "rank_out > 1 is not supported for GLWEToLWESwitchingKeyPrepared"
 98        );
 99        debug_assert_eq!(
100            infos.dsize().0,
101            1,
102            "dsize > 1 is not supported for GLWEToLWESwitchingKeyPrepared"
103        );
104        self.bytes_of_glwe_to_lwe_switching_key_prepared(infos.base2k(), infos.k(), infos.rank_in(), infos.dnum())
105    }
106}
107
108impl<B: Backend> GLWEToLWESwitchingKeyPreparedAlloc<B> for Module<B> where Self: GLWESwitchingKeyPreparedAlloc<B> {}
109
110impl<B: Backend> GLWEToLWESwitchingKeyPrepared<Vec<u8>, B> {
111    pub fn alloc_from_infos<A, M>(module: &M, infos: &A) -> Self
112    where
113        A: GGLWEInfos,
114        M: GLWEToLWESwitchingKeyPreparedAlloc<B>,
115    {
116        module.alloc_glwe_to_lwe_switching_key_prepared_from_infos(infos)
117    }
118
119    pub fn alloc<M>(module: &M, base2k: Base2K, k: TorusPrecision, rank_in: Rank, dnum: Dnum) -> Self
120    where
121        M: GLWEToLWESwitchingKeyPreparedAlloc<B>,
122    {
123        module.alloc_glwe_to_lwe_switching_key_prepared(base2k, k, rank_in, dnum)
124    }
125
126    pub fn bytes_of_from_infos<A, M>(module: &M, infos: &A) -> usize
127    where
128        A: GGLWEInfos,
129        M: GLWEToLWESwitchingKeyPreparedAlloc<B>,
130    {
131        module.bytes_of_glwe_to_lwe_switching_key_prepared_from_infos(infos)
132    }
133
134    pub fn bytes_of<M>(module: &M, base2k: Base2K, k: TorusPrecision, rank_in: Rank, dnum: Dnum) -> usize
135    where
136        M: GLWEToLWESwitchingKeyPreparedAlloc<B>,
137    {
138        module.bytes_of_glwe_to_lwe_switching_key_prepared(base2k, k, rank_in, dnum)
139    }
140}
141
142pub trait GLWEToLWESwitchingKeyPrepare<B: Backend>
143where
144    Self: GLWESwitchingKeyPrepare<B>,
145{
146    fn prepare_glwe_to_lwe_switching_key_tmp_bytes<A>(&self, infos: &A)
147    where
148        A: GGLWEInfos,
149    {
150        self.prepare_glwe_switching_key_tmp_bytes(infos);
151    }
152
153    fn prepare_glwe_to_lwe_switching_key<R, O>(&self, res: &mut R, other: &O, scratch: &mut Scratch<B>)
154    where
155        R: GLWEToLWESwitchingKeyPreparedToMut<B>,
156        O: GLWEToLWESwitchingKeyToRef,
157    {
158        self.prepare_glwe_switching(&mut res.to_mut().0, &other.to_ref().0, scratch);
159    }
160}
161
162impl<B: Backend> GLWEToLWESwitchingKeyPrepare<B> for Module<B> where Self: GLWESwitchingKeyPrepare<B> {}
163
164impl<B: Backend> GLWEToLWESwitchingKeyPrepared<Vec<u8>, B> {
165    pub fn prepare_tmp_bytes<A, M>(&self, module: &M, infos: &A)
166    where
167        A: GGLWEInfos,
168        M: GLWEToLWESwitchingKeyPrepare<B>,
169    {
170        module.prepare_glwe_to_lwe_switching_key_tmp_bytes(infos);
171    }
172}
173
174impl<D: DataMut, B: Backend> GLWEToLWESwitchingKeyPrepared<D, B> {
175    pub fn prepare<O, M>(&mut self, module: &M, other: &O, scratch: &mut Scratch<B>)
176    where
177        O: GLWEToLWESwitchingKeyToRef,
178        M: GLWEToLWESwitchingKeyPrepare<B>,
179    {
180        module.prepare_glwe_to_lwe_switching_key(self, other, scratch);
181    }
182}
183
184pub trait GLWEToLWESwitchingKeyPreparedToRef<B: Backend> {
185    fn to_ref(&self) -> GLWEToLWESwitchingKeyPrepared<&[u8], B>;
186}
187
188impl<D: DataRef, B: Backend> GLWEToLWESwitchingKeyPreparedToRef<B> for GLWEToLWESwitchingKeyPrepared<D, B>
189where
190    GLWESwitchingKeyPrepared<D, B>: GLWESwitchingKeyPreparedToRef<B>,
191{
192    fn to_ref(&self) -> GLWEToLWESwitchingKeyPrepared<&[u8], B> {
193        GLWEToLWESwitchingKeyPrepared(self.0.to_ref())
194    }
195}
196
197pub trait GLWEToLWESwitchingKeyPreparedToMut<B: Backend> {
198    fn to_mut(&mut self) -> GLWEToLWESwitchingKeyPrepared<&mut [u8], B>;
199}
200
201impl<D: DataMut, B: Backend> GLWEToLWESwitchingKeyPreparedToMut<B> for GLWEToLWESwitchingKeyPrepared<D, B>
202where
203    GLWESwitchingKeyPrepared<D, B>: GLWESwitchingKeyPreparedToMut<B>,
204{
205    fn to_mut(&mut self) -> GLWEToLWESwitchingKeyPrepared<&mut [u8], B> {
206        GLWEToLWESwitchingKeyPrepared(self.0.to_mut())
207    }
208}