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Commitfa84d62

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Move Oracle related things to separate file
1 parentba7f4f6 commitfa84d62

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6 files changed

+80
-30
lines changed

6 files changed

+80
-30
lines changed

‎blobstamper/galley.cpp

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -24,7 +24,7 @@
2424
#include"stamp.h"
2525
#include"stamp_arithm.h"
2626
#include"galley.h"
27-
27+
#include"oracle.h"
2828

2929
int
3030
GalleyVectorBase::minSize()

‎blobstamper/galley.h

Lines changed: 0 additions & 8 deletions
Original file line numberDiff line numberDiff line change
@@ -19,20 +19,13 @@
1919
#ifndef GALLEY_H
2020
#defineGALLEY_H
2121

22-
23-
#include<limits>
2422
#include<vector>
2523
#include<functional>// for std::reference_wrapper
2624

2725
#include"stamp.h"
2826
#include"blob.h"
2927

3028

31-
#defineORACLE_TYPEunsignedshortint
32-
#defineORACLE_STAMP StampArithm<ORACLE_TYPE>
33-
#defineORACLE_SIZEsizeof(ORACLE_TYPE)
34-
#defineORACLE_MAX std::numeric_limits<ORACLE_TYPE>::max()
35-
3629
classGalleyBase:publicvirtual StampBase
3730
/* Galley is a kind of stamp, somwhere deep inside.*/
3831
/* You can inherit it, and make a stamp out of it*/
@@ -63,7 +56,6 @@ template<class T> class GalleyVectorStrStampBase: public GalleyVectorStr, publi
6356
{
6457
public:
6558
GalleyVectorStrStampBase(): GalleyVectorStr(std::make_shared<T>()) {};
66-
6759
};
6860

6961

‎blobstamper/oracle.cpp

Lines changed: 37 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,37 @@
1+
/******************************************************************************
2+
*
3+
* Copyright 2021-2023 Nikolay Shaplov (Postgres Professional)
4+
*
5+
* Licensed under the Apache License, Version 2.0 (the "License");
6+
* you may not use this file except in compliance with the License.
7+
* You may obtain a copy of the License at
8+
*
9+
* http://www.apache.org/licenses/LICENSE-2.0
10+
*
11+
* Unless required by applicable law or agreed to in writing, software
12+
* distributed under the License is distributed on an "AS IS" BASIS,
13+
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14+
* See the License for the specific language governing permissions and
15+
* limitations under the License.
16+
*
17+
******************************************************************************/
18+
19+
#include<math.h>
20+
21+
#include"oracle.h"
22+
23+
size_t
24+
OracleProportion(ORACLE_TYPE oracle,size_t min,size_t max)
25+
{
26+
/* Sorry explanation is in Russian. PR translation if you can*/
27+
/* Считаем пропорацию, с округлением вниз.
28+
* Диапазон увиличиваем на единицу, чтобы хвост диапазона пресказания при
29+
* округлении вниз как раз попадал в последний элемент целевого диапозона.
30+
* Разброс предсказания увеличиваем на единицу, так чтобы ровно на конец
31+
* хвоста диапазона предсказания не попасть никогда и тогда он не округлиться
32+
* в max + 1*/
33+
size_t delta = max - min +1;
34+
size_t res =floor(((float) oracle) / ((float) ORACLE_MAX +1) * delta );
35+
return min + res;
36+
}
37+

‎blobstamper/oracle.h

Lines changed: 33 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,33 @@
1+
/******************************************************************************
2+
*
3+
* Copyright 2021-2023 Nikolay Shaplov (Postgres Professional)
4+
*
5+
* Licensed under the Apache License, Version 2.0 (the "License");
6+
* you may not use this file except in compliance with the License.
7+
* You may obtain a copy of the License at
8+
*
9+
* http://www.apache.org/licenses/LICENSE-2.0
10+
*
11+
* Unless required by applicable law or agreed to in writing, software
12+
* distributed under the License is distributed on an "AS IS" BASIS,
13+
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14+
* See the License for the specific language governing permissions and
15+
* limitations under the License.
16+
*
17+
******************************************************************************/
18+
19+
#ifndef STAMP_ORACLE_H
20+
#defineSTAMP_ORACLE_H
21+
22+
#include<cstddef>
23+
#include<limits>
24+
25+
#defineORACLE_TYPEunsignedshortint
26+
#defineORACLE_STAMP StampArithm<ORACLE_TYPE>
27+
#defineORACLE_SIZEsizeof(ORACLE_TYPE)
28+
#defineORACLE_MAX std::numeric_limits<ORACLE_TYPE>::max()
29+
30+
size_tOracleProportion(ORACLE_TYPE oracle,size_t min,size_t max);
31+
32+
#endif/* STAMP_ORACLE_H*/
33+

‎t/300-galley.cpp

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -26,6 +26,7 @@
2626
#include<tap++/tap++.h>
2727

2828
#include"blobstamper/blobstamper.h"
29+
#include"blobstamper/oracle.h"
2930

3031
#include"test-chars-stamps.h"
3132

‎t/321-galley-recursion-experiments_2.cpp

Lines changed: 8 additions & 21 deletions
Original file line numberDiff line numberDiff line change
@@ -28,6 +28,7 @@
2828

2929
#include"blobstamper/blobstamper.h"
3030
#include"blobstamper/dict.h"
31+
#include"blobstamper/oracle.h"
3132

3233
#include"test-chars-stamps.h"
3334

@@ -44,20 +45,6 @@ unsigned char bin_sample[]= {49, 22, 152, 226, 89, 119, 247, 115, 43, 42, 243, 7
4445
//class TestRNode2;
4546
//class TestRNode3;
4647

47-
size_t
48-
Proportion(ORACLE_TYPE oracle,size_t min,size_t max)
49-
{
50-
/* Sorry explanation is in Russian. PR translation if you can*/
51-
/* Считаем пропорацию, с округлением вниз.
52-
* Диапазон увиличиваем на единицу, чтобы хвост диапазона пресказания при
53-
* округлении вниз как раз попадал в последний элемент целевого диапозона.
54-
* Разброс предсказания увеличиваем на единицу, так чтобы ровно на конец
55-
* хвоста диапазона предсказания не попасть никогда и тогда он не округлиться
56-
* в max + 1*/
57-
size_t delta = max - min +1;
58-
size_t res =floor(((float) oracle) / ((float) ORACLE_MAX +1) * delta );
59-
return min + res;
60-
}
6148

6249
classPoolPickerStamp :publicvirtual StampBaseStr
6350
{
@@ -122,7 +109,7 @@ fprintf(stderr, "*");
122109
}
123110
}
124111

125-
size_tindex =Proportion(oracle,0, target_pool.size() -1);
112+
size_tindex =OracleProportion(oracle,0, target_pool.size() -1);
126113
return target_pool[index].lock()->ExtractStr(blob);
127114
}
128115

@@ -243,12 +230,12 @@ main()
243230

244231
TEST_START(6);
245232
{
246-
is(Proportion(0,0,255),0);
247-
is(Proportion(255,0,255),0);
248-
is(Proportion(256,0,255),1);
249-
is(Proportion(65535,0,255),255);
250-
is(Proportion(65535-255,0,255),255);
251-
is(Proportion(65535-256,0,255),254);
233+
is(OracleProportion(0,0,255),0);
234+
is(OracleProportion(255,0,255),0);
235+
is(OracleProportion(256,0,255),1);
236+
is(OracleProportion(65535,0,255),255);
237+
is(OracleProportion(65535-255,0,255),255);
238+
is(OracleProportion(65535-256,0,255),254);
252239

253240
}
254241
TEST_END;

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