1use poulpy_hal::layouts::{Backend, Data, DataMut, DataRef, Module, Scratch};
  2
  3use crate::layouts::{
  4    Base2K, Degree, Dnum, Dsize, GGLWEInfos, GGLWEPrepared, GGLWEPreparedToMut, GGLWEPreparedToRef, GGLWEToRef, GLWEInfos,
  5    GLWESwitchingKeyDegrees, GLWESwitchingKeyDegreesMut, LWEInfos, Rank, TorusPrecision,
  6    prepared::{GLWESwitchingKeyPrepare, GLWESwitchingKeyPrepared, GLWESwitchingKeyPreparedAlloc},
  7};
  8
  9#[derive(PartialEq, Eq)]
 10pub struct GLWEToLWESwitchingKeyPrepared<D: Data, B: Backend>(pub(crate) GLWESwitchingKeyPrepared<D, B>);
 11
 12impl<D: Data, B: Backend> LWEInfos for GLWEToLWESwitchingKeyPrepared<D, B> {
 13    fn base2k(&self) -> Base2K {
 14        self.0.base2k()
 15    }
 16
 17    fn k(&self) -> TorusPrecision {
 18        self.0.k()
 19    }
 20
 21    fn n(&self) -> Degree {
 22        self.0.n()
 23    }
 24
 25    fn size(&self) -> usize {
 26        self.0.size()
 27    }
 28}
 29
 30impl<D: Data, B: Backend> GLWEInfos for GLWEToLWESwitchingKeyPrepared<D, B> {
 31    fn rank(&self) -> Rank {
 32        self.rank_out()
 33    }
 34}
 35
 36impl<D: Data, B: Backend> GGLWEInfos for GLWEToLWESwitchingKeyPrepared<D, B> {
 37    fn rank_in(&self) -> Rank {
 38        self.0.rank_in()
 39    }
 40
 41    fn dsize(&self) -> Dsize {
 42        self.0.dsize()
 43    }
 44
 45    fn rank_out(&self) -> Rank {
 46        self.0.rank_out()
 47    }
 48
 49    fn dnum(&self) -> Dnum {
 50        self.0.dnum()
 51    }
 52}
 53
 54pub trait GLWEToLWESwitchingKeyPreparedAlloc<B: Backend>
 55where
 56    Self: GLWESwitchingKeyPreparedAlloc<B>,
 57{
 58    fn alloc_glwe_to_lwe_switching_key_prepared(
 59        &self,
 60        base2k: Base2K,
 61        k: TorusPrecision,
 62        rank_in: Rank,
 63        dnum: Dnum,
 64    ) -> GLWEToLWESwitchingKeyPrepared<Vec<u8>, B> {
 65        GLWEToLWESwitchingKeyPrepared(self.alloc_glwe_switching_key_prepared(base2k, k, rank_in, Rank(1), dnum, Dsize(1)))
 66    }
 67    fn alloc_glwe_to_lwe_switching_key_prepared_from_infos<A>(&self, infos: &A) -> GLWEToLWESwitchingKeyPrepared<Vec<u8>, B>
 68    where
 69        A: GGLWEInfos,
 70    {
 71        debug_assert_eq!(
 72            infos.rank_out().0,
 73            1,
 74            "rank_out > 1 is not supported for GLWEToLWESwitchingKeyPrepared"
 75        );
 76        debug_assert_eq!(
 77            infos.dsize().0,
 78            1,
 79            "dsize > 1 is not supported for GLWEToLWESwitchingKeyPrepared"
 80        );
 81        self.alloc_glwe_to_lwe_switching_key_prepared(infos.base2k(), infos.k(), infos.rank_in(), infos.dnum())
 82    }
 83
 84    fn bytes_of_glwe_to_lwe_switching_key_prepared(&self, base2k: Base2K, k: TorusPrecision, rank_in: Rank, dnum: Dnum) -> usize {
 85        self.bytes_of_glwe_switching_key_prepared(base2k, k, rank_in, Rank(1), dnum, Dsize(1))
 86    }
 87
 88    fn bytes_of_glwe_to_lwe_switching_key_prepared_from_infos<A>(&self, infos: &A) -> usize
 89    where
 90        A: GGLWEInfos,
 91    {
 92        debug_assert_eq!(
 93            infos.rank_out().0,
 94            1,
 95            "rank_out > 1 is not supported for GLWEToLWESwitchingKeyPrepared"
 96        );
 97        debug_assert_eq!(
 98            infos.dsize().0,
 99            1,
100            "dsize > 1 is not supported for GLWEToLWESwitchingKeyPrepared"
101        );
102        self.bytes_of_glwe_to_lwe_switching_key_prepared(infos.base2k(), infos.k(), infos.rank_in(), infos.dnum())
103    }
104}
105
106impl<B: Backend> GLWEToLWESwitchingKeyPreparedAlloc<B> for Module<B> where Self: GLWESwitchingKeyPreparedAlloc<B> {}
107
108impl<B: Backend> GLWEToLWESwitchingKeyPrepared<Vec<u8>, B> {
109    pub fn alloc_from_infos<A, M>(module: &M, infos: &A) -> Self
110    where
111        A: GGLWEInfos,
112        M: GLWEToLWESwitchingKeyPreparedAlloc<B>,
113    {
114        module.alloc_glwe_to_lwe_switching_key_prepared_from_infos(infos)
115    }
116
117    pub fn alloc<M>(module: &M, base2k: Base2K, k: TorusPrecision, rank_in: Rank, dnum: Dnum) -> Self
118    where
119        M: GLWEToLWESwitchingKeyPreparedAlloc<B>,
120    {
121        module.alloc_glwe_to_lwe_switching_key_prepared(base2k, k, rank_in, dnum)
122    }
123
124    pub fn bytes_of_from_infos<A, M>(module: &M, infos: &A) -> usize
125    where
126        A: GGLWEInfos,
127        M: GLWEToLWESwitchingKeyPreparedAlloc<B>,
128    {
129        module.bytes_of_glwe_to_lwe_switching_key_prepared_from_infos(infos)
130    }
131
132    pub fn bytes_of<M>(module: &M, base2k: Base2K, k: TorusPrecision, rank_in: Rank, dnum: Dnum) -> usize
133    where
134        M: GLWEToLWESwitchingKeyPreparedAlloc<B>,
135    {
136        module.bytes_of_glwe_to_lwe_switching_key_prepared(base2k, k, rank_in, dnum)
137    }
138}
139
140pub trait GLWEToLWESwitchingKeyPrepare<B: Backend>
141where
142    Self: GLWESwitchingKeyPrepare<B>,
143{
144    fn prepare_glwe_to_lwe_switching_key_tmp_bytes<A>(&self, infos: &A)
145    where
146        A: GGLWEInfos,
147    {
148        self.prepare_glwe_switching_key_tmp_bytes(infos);
149    }
150
151    fn prepare_glwe_to_lwe_switching_key<R, O>(&self, res: &mut R, other: &O, scratch: &mut Scratch<B>)
152    where
153        R: GGLWEPreparedToMut<B> + GLWESwitchingKeyDegreesMut,
154        O: GGLWEToRef + GLWESwitchingKeyDegrees,
155    {
156        self.prepare_glwe_switching(res, other, scratch);
157    }
158}
159
160impl<B: Backend> GLWEToLWESwitchingKeyPrepare<B> for Module<B> where Self: GLWESwitchingKeyPrepare<B> {}
161
162impl<B: Backend> GLWEToLWESwitchingKeyPrepared<Vec<u8>, B> {
163    pub fn prepare_tmp_bytes<A, M>(&self, module: &M, infos: &A)
164    where
165        A: GGLWEInfos,
166        M: GLWEToLWESwitchingKeyPrepare<B>,
167    {
168        module.prepare_glwe_to_lwe_switching_key_tmp_bytes(infos);
169    }
170}
171
172impl<D: DataMut, B: Backend> GLWEToLWESwitchingKeyPrepared<D, B> {
173    pub fn prepare<O, M>(&mut self, module: &M, other: &O, scratch: &mut Scratch<B>)
174    where
175        O: GGLWEToRef + GLWESwitchingKeyDegrees,
176        M: GLWEToLWESwitchingKeyPrepare<B>,
177    {
178        module.prepare_glwe_to_lwe_switching_key(self, other, scratch);
179    }
180}
181
182impl<D: DataRef, B: Backend> GGLWEPreparedToRef<B> for GLWEToLWESwitchingKeyPrepared<D, B>
183where
184    GLWESwitchingKeyPrepared<D, B>: GGLWEPreparedToRef<B>,
185{
186    fn to_ref(&self) -> GGLWEPrepared<&[u8], B> {
187        self.0.to_ref()
188    }
189}
190
191impl<D: DataMut, B: Backend> GGLWEPreparedToMut<B> for GLWEToLWESwitchingKeyPrepared<D, B>
192where
193    GLWESwitchingKeyPrepared<D, B>: GGLWEPreparedToRef<B>,
194{
195    fn to_mut(&mut self) -> GGLWEPrepared<&mut [u8], B> {
196        self.0.to_mut()
197    }
198}
199
200impl<D: DataMut, B: Backend> GLWESwitchingKeyDegreesMut for GLWEToLWESwitchingKeyPrepared<D, B> {
201    fn input_degree(&mut self) -> &mut Degree {
202        &mut self.0.input_degree
203    }
204
205    fn output_degree(&mut self) -> &mut Degree {
206        &mut self.0.output_degree
207    }
208}
209
210impl<D: DataRef, B: Backend> GLWESwitchingKeyDegrees for GLWEToLWESwitchingKeyPrepared<D, B> {
211    fn input_degree(&self) -> &Degree {
212        &self.0.input_degree
213    }
214
215    fn output_degree(&self) -> &Degree {
216        &self.0.output_degree
217    }
218}