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tantivy/cpp/streamvbyte/src/streamvbytedelta.c

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#include "streamvbyte.h"
#if defined(_MSC_VER)
/* Microsoft C/C++-compatible compiler */
#include <intrin.h>
#elif defined(__GNUC__) && (defined(__x86_64__) || defined(__i386__))
/* GCC-compatible compiler, targeting x86/x86-64 */
#include <x86intrin.h>
#elif defined(__GNUC__) && defined(__ARM_NEON__)
/* GCC-compatible compiler, targeting ARM with NEON */
#include <arm_neon.h>
#elif defined(__GNUC__) && defined(__IWMMXT__)
/* GCC-compatible compiler, targeting ARM with WMMX */
#include <mmintrin.h>
#elif (defined(__GNUC__) || defined(__xlC__)) && (defined(__VEC__) || defined(__ALTIVEC__))
/* XLC or GCC-compatible compiler, targeting PowerPC with VMX/VSX */
#include <altivec.h>
#elif defined(__GNUC__) && defined(__SPE__)
/* GCC-compatible compiler, targeting PowerPC with SPE */
#include <spe.h>
#endif
static uint8_t lengthTable[256] = { 4, 5, 6, 7, 5, 6, 7, 8, 6, 7, 8, 9, 7, 8, 9,
10, 5, 6, 7, 8, 6, 7, 8, 9, 7, 8, 9, 10, 8, 9, 10, 11, 6, 7, 8, 9, 7, 8,
9, 10, 8, 9, 10, 11, 9, 10, 11, 12, 7, 8, 9, 10, 8, 9, 10, 11, 9, 10,
11, 12, 10, 11, 12, 13, 5, 6, 7, 8, 6, 7, 8, 9, 7, 8, 9, 10, 8, 9, 10,
11, 6, 7, 8, 9, 7, 8, 9, 10, 8, 9, 10, 11, 9, 10, 11, 12, 7, 8, 9, 10,
8, 9, 10, 11, 9, 10, 11, 12, 10, 11, 12, 13, 8, 9, 10, 11, 9, 10, 11,
12, 10, 11, 12, 13, 11, 12, 13, 14, 6, 7, 8, 9, 7, 8, 9, 10, 8, 9, 10,
11, 9, 10, 11, 12, 7, 8, 9, 10, 8, 9, 10, 11, 9, 10, 11, 12, 10, 11, 12,
13, 8, 9, 10, 11, 9, 10, 11, 12, 10, 11, 12, 13, 11, 12, 13, 14, 9, 10,
11, 12, 10, 11, 12, 13, 11, 12, 13, 14, 12, 13, 14, 15, 7, 8, 9, 10, 8,
9, 10, 11, 9, 10, 11, 12, 10, 11, 12, 13, 8, 9, 10, 11, 9, 10, 11, 12,
10, 11, 12, 13, 11, 12, 13, 14, 9, 10, 11, 12, 10, 11, 12, 13, 11, 12,
13, 14, 12, 13, 14, 15, 10, 11, 12, 13, 11, 12, 13, 14, 12, 13, 14, 15,
13, 14, 15, 16 };
static uint8_t shuffleTable[256][16] = { { 0, -1, -1, -1, 1, -1, -1, -1, 2, -1,
-1, -1, 3, -1, -1, -1 }, // 1111
{ 0, 1, -1, -1, 2, -1, -1, -1, 3, -1, -1, -1, 4, -1, -1, -1 }, // 2111
{ 0, 1, 2, -1, 3, -1, -1, -1, 4, -1, -1, -1, 5, -1, -1, -1 }, // 3111
{ 0, 1, 2, 3, 4, -1, -1, -1, 5, -1, -1, -1, 6, -1, -1, -1 }, // 4111
{ 0, -1, -1, -1, 1, 2, -1, -1, 3, -1, -1, -1, 4, -1, -1, -1 }, // 1211
{ 0, 1, -1, -1, 2, 3, -1, -1, 4, -1, -1, -1, 5, -1, -1, -1 }, // 2211
{ 0, 1, 2, -1, 3, 4, -1, -1, 5, -1, -1, -1, 6, -1, -1, -1 }, // 3211
{ 0, 1, 2, 3, 4, 5, -1, -1, 6, -1, -1, -1, 7, -1, -1, -1 }, // 4211
{ 0, -1, -1, -1, 1, 2, 3, -1, 4, -1, -1, -1, 5, -1, -1, -1 }, // 1311
{ 0, 1, -1, -1, 2, 3, 4, -1, 5, -1, -1, -1, 6, -1, -1, -1 }, // 2311
{ 0, 1, 2, -1, 3, 4, 5, -1, 6, -1, -1, -1, 7, -1, -1, -1 }, // 3311
{ 0, 1, 2, 3, 4, 5, 6, -1, 7, -1, -1, -1, 8, -1, -1, -1 }, // 4311
{ 0, -1, -1, -1, 1, 2, 3, 4, 5, -1, -1, -1, 6, -1, -1, -1 }, // 1411
{ 0, 1, -1, -1, 2, 3, 4, 5, 6, -1, -1, -1, 7, -1, -1, -1 }, // 2411
{ 0, 1, 2, -1, 3, 4, 5, 6, 7, -1, -1, -1, 8, -1, -1, -1 }, // 3411
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, -1, -1, -1, 9, -1, -1, -1 }, // 4411
{ 0, -1, -1, -1, 1, -1, -1, -1, 2, 3, -1, -1, 4, -1, -1, -1 }, // 1121
{ 0, 1, -1, -1, 2, -1, -1, -1, 3, 4, -1, -1, 5, -1, -1, -1 }, // 2121
{ 0, 1, 2, -1, 3, -1, -1, -1, 4, 5, -1, -1, 6, -1, -1, -1 }, // 3121
{ 0, 1, 2, 3, 4, -1, -1, -1, 5, 6, -1, -1, 7, -1, -1, -1 }, // 4121
{ 0, -1, -1, -1, 1, 2, -1, -1, 3, 4, -1, -1, 5, -1, -1, -1 }, // 1221
{ 0, 1, -1, -1, 2, 3, -1, -1, 4, 5, -1, -1, 6, -1, -1, -1 }, // 2221
{ 0, 1, 2, -1, 3, 4, -1, -1, 5, 6, -1, -1, 7, -1, -1, -1 }, // 3221
{ 0, 1, 2, 3, 4, 5, -1, -1, 6, 7, -1, -1, 8, -1, -1, -1 }, // 4221
{ 0, -1, -1, -1, 1, 2, 3, -1, 4, 5, -1, -1, 6, -1, -1, -1 }, // 1321
{ 0, 1, -1, -1, 2, 3, 4, -1, 5, 6, -1, -1, 7, -1, -1, -1 }, // 2321
{ 0, 1, 2, -1, 3, 4, 5, -1, 6, 7, -1, -1, 8, -1, -1, -1 }, // 3321
{ 0, 1, 2, 3, 4, 5, 6, -1, 7, 8, -1, -1, 9, -1, -1, -1 }, // 4321
{ 0, -1, -1, -1, 1, 2, 3, 4, 5, 6, -1, -1, 7, -1, -1, -1 }, // 1421
{ 0, 1, -1, -1, 2, 3, 4, 5, 6, 7, -1, -1, 8, -1, -1, -1 }, // 2421
{ 0, 1, 2, -1, 3, 4, 5, 6, 7, 8, -1, -1, 9, -1, -1, -1 }, // 3421
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, 10, -1, -1, -1 }, // 4421
{ 0, -1, -1, -1, 1, -1, -1, -1, 2, 3, 4, -1, 5, -1, -1, -1 }, // 1131
{ 0, 1, -1, -1, 2, -1, -1, -1, 3, 4, 5, -1, 6, -1, -1, -1 }, // 2131
{ 0, 1, 2, -1, 3, -1, -1, -1, 4, 5, 6, -1, 7, -1, -1, -1 }, // 3131
{ 0, 1, 2, 3, 4, -1, -1, -1, 5, 6, 7, -1, 8, -1, -1, -1 }, // 4131
{ 0, -1, -1, -1, 1, 2, -1, -1, 3, 4, 5, -1, 6, -1, -1, -1 }, // 1231
{ 0, 1, -1, -1, 2, 3, -1, -1, 4, 5, 6, -1, 7, -1, -1, -1 }, // 2231
{ 0, 1, 2, -1, 3, 4, -1, -1, 5, 6, 7, -1, 8, -1, -1, -1 }, // 3231
{ 0, 1, 2, 3, 4, 5, -1, -1, 6, 7, 8, -1, 9, -1, -1, -1 }, // 4231
{ 0, -1, -1, -1, 1, 2, 3, -1, 4, 5, 6, -1, 7, -1, -1, -1 }, // 1331
{ 0, 1, -1, -1, 2, 3, 4, -1, 5, 6, 7, -1, 8, -1, -1, -1 }, // 2331
{ 0, 1, 2, -1, 3, 4, 5, -1, 6, 7, 8, -1, 9, -1, -1, -1 }, // 3331
{ 0, 1, 2, 3, 4, 5, 6, -1, 7, 8, 9, -1, 10, -1, -1, -1 }, // 4331
{ 0, -1, -1, -1, 1, 2, 3, 4, 5, 6, 7, -1, 8, -1, -1, -1 }, // 1431
{ 0, 1, -1, -1, 2, 3, 4, 5, 6, 7, 8, -1, 9, -1, -1, -1 }, // 2431
{ 0, 1, 2, -1, 3, 4, 5, 6, 7, 8, 9, -1, 10, -1, -1, -1 }, // 3431
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, -1, 11, -1, -1, -1 }, // 4431
{ 0, -1, -1, -1, 1, -1, -1, -1, 2, 3, 4, 5, 6, -1, -1, -1 }, // 1141
{ 0, 1, -1, -1, 2, -1, -1, -1, 3, 4, 5, 6, 7, -1, -1, -1 }, // 2141
{ 0, 1, 2, -1, 3, -1, -1, -1, 4, 5, 6, 7, 8, -1, -1, -1 }, // 3141
{ 0, 1, 2, 3, 4, -1, -1, -1, 5, 6, 7, 8, 9, -1, -1, -1 }, // 4141
{ 0, -1, -1, -1, 1, 2, -1, -1, 3, 4, 5, 6, 7, -1, -1, -1 }, // 1241
{ 0, 1, -1, -1, 2, 3, -1, -1, 4, 5, 6, 7, 8, -1, -1, -1 }, // 2241
{ 0, 1, 2, -1, 3, 4, -1, -1, 5, 6, 7, 8, 9, -1, -1, -1 }, // 3241
{ 0, 1, 2, 3, 4, 5, -1, -1, 6, 7, 8, 9, 10, -1, -1, -1 }, // 4241
{ 0, -1, -1, -1, 1, 2, 3, -1, 4, 5, 6, 7, 8, -1, -1, -1 }, // 1341
{ 0, 1, -1, -1, 2, 3, 4, -1, 5, 6, 7, 8, 9, -1, -1, -1 }, // 2341
{ 0, 1, 2, -1, 3, 4, 5, -1, 6, 7, 8, 9, 10, -1, -1, -1 }, // 3341
{ 0, 1, 2, 3, 4, 5, 6, -1, 7, 8, 9, 10, 11, -1, -1, -1 }, // 4341
{ 0, -1, -1, -1, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1 }, // 1441
{ 0, 1, -1, -1, 2, 3, 4, 5, 6, 7, 8, 9, 10, -1, -1, -1 }, // 2441
{ 0, 1, 2, -1, 3, 4, 5, 6, 7, 8, 9, 10, 11, -1, -1, -1 }, // 3441
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, -1, -1, -1 }, // 4441
{ 0, -1, -1, -1, 1, -1, -1, -1, 2, -1, -1, -1, 3, 4, -1, -1 }, // 1112
{ 0, 1, -1, -1, 2, -1, -1, -1, 3, -1, -1, -1, 4, 5, -1, -1 }, // 2112
{ 0, 1, 2, -1, 3, -1, -1, -1, 4, -1, -1, -1, 5, 6, -1, -1 }, // 3112
{ 0, 1, 2, 3, 4, -1, -1, -1, 5, -1, -1, -1, 6, 7, -1, -1 }, // 4112
{ 0, -1, -1, -1, 1, 2, -1, -1, 3, -1, -1, -1, 4, 5, -1, -1 }, // 1212
{ 0, 1, -1, -1, 2, 3, -1, -1, 4, -1, -1, -1, 5, 6, -1, -1 }, // 2212
{ 0, 1, 2, -1, 3, 4, -1, -1, 5, -1, -1, -1, 6, 7, -1, -1 }, // 3212
{ 0, 1, 2, 3, 4, 5, -1, -1, 6, -1, -1, -1, 7, 8, -1, -1 }, // 4212
{ 0, -1, -1, -1, 1, 2, 3, -1, 4, -1, -1, -1, 5, 6, -1, -1 }, // 1312
{ 0, 1, -1, -1, 2, 3, 4, -1, 5, -1, -1, -1, 6, 7, -1, -1 }, // 2312
{ 0, 1, 2, -1, 3, 4, 5, -1, 6, -1, -1, -1, 7, 8, -1, -1 }, // 3312
{ 0, 1, 2, 3, 4, 5, 6, -1, 7, -1, -1, -1, 8, 9, -1, -1 }, // 4312
{ 0, -1, -1, -1, 1, 2, 3, 4, 5, -1, -1, -1, 6, 7, -1, -1 }, // 1412
{ 0, 1, -1, -1, 2, 3, 4, 5, 6, -1, -1, -1, 7, 8, -1, -1 }, // 2412
{ 0, 1, 2, -1, 3, 4, 5, 6, 7, -1, -1, -1, 8, 9, -1, -1 }, // 3412
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, -1, -1, -1, 9, 10, -1, -1 }, // 4412
{ 0, -1, -1, -1, 1, -1, -1, -1, 2, 3, -1, -1, 4, 5, -1, -1 }, // 1122
{ 0, 1, -1, -1, 2, -1, -1, -1, 3, 4, -1, -1, 5, 6, -1, -1 }, // 2122
{ 0, 1, 2, -1, 3, -1, -1, -1, 4, 5, -1, -1, 6, 7, -1, -1 }, // 3122
{ 0, 1, 2, 3, 4, -1, -1, -1, 5, 6, -1, -1, 7, 8, -1, -1 }, // 4122
{ 0, -1, -1, -1, 1, 2, -1, -1, 3, 4, -1, -1, 5, 6, -1, -1 }, // 1222
{ 0, 1, -1, -1, 2, 3, -1, -1, 4, 5, -1, -1, 6, 7, -1, -1 }, // 2222
{ 0, 1, 2, -1, 3, 4, -1, -1, 5, 6, -1, -1, 7, 8, -1, -1 }, // 3222
{ 0, 1, 2, 3, 4, 5, -1, -1, 6, 7, -1, -1, 8, 9, -1, -1 }, // 4222
{ 0, -1, -1, -1, 1, 2, 3, -1, 4, 5, -1, -1, 6, 7, -1, -1 }, // 1322
{ 0, 1, -1, -1, 2, 3, 4, -1, 5, 6, -1, -1, 7, 8, -1, -1 }, // 2322
{ 0, 1, 2, -1, 3, 4, 5, -1, 6, 7, -1, -1, 8, 9, -1, -1 }, // 3322
{ 0, 1, 2, 3, 4, 5, 6, -1, 7, 8, -1, -1, 9, 10, -1, -1 }, // 4322
{ 0, -1, -1, -1, 1, 2, 3, 4, 5, 6, -1, -1, 7, 8, -1, -1 }, // 1422
{ 0, 1, -1, -1, 2, 3, 4, 5, 6, 7, -1, -1, 8, 9, -1, -1 }, // 2422
{ 0, 1, 2, -1, 3, 4, 5, 6, 7, 8, -1, -1, 9, 10, -1, -1 }, // 3422
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, 10, 11, -1, -1 }, // 4422
{ 0, -1, -1, -1, 1, -1, -1, -1, 2, 3, 4, -1, 5, 6, -1, -1 }, // 1132
{ 0, 1, -1, -1, 2, -1, -1, -1, 3, 4, 5, -1, 6, 7, -1, -1 }, // 2132
{ 0, 1, 2, -1, 3, -1, -1, -1, 4, 5, 6, -1, 7, 8, -1, -1 }, // 3132
{ 0, 1, 2, 3, 4, -1, -1, -1, 5, 6, 7, -1, 8, 9, -1, -1 }, // 4132
{ 0, -1, -1, -1, 1, 2, -1, -1, 3, 4, 5, -1, 6, 7, -1, -1 }, // 1232
{ 0, 1, -1, -1, 2, 3, -1, -1, 4, 5, 6, -1, 7, 8, -1, -1 }, // 2232
{ 0, 1, 2, -1, 3, 4, -1, -1, 5, 6, 7, -1, 8, 9, -1, -1 }, // 3232
{ 0, 1, 2, 3, 4, 5, -1, -1, 6, 7, 8, -1, 9, 10, -1, -1 }, // 4232
{ 0, -1, -1, -1, 1, 2, 3, -1, 4, 5, 6, -1, 7, 8, -1, -1 }, // 1332
{ 0, 1, -1, -1, 2, 3, 4, -1, 5, 6, 7, -1, 8, 9, -1, -1 }, // 2332
{ 0, 1, 2, -1, 3, 4, 5, -1, 6, 7, 8, -1, 9, 10, -1, -1 }, // 3332
{ 0, 1, 2, 3, 4, 5, 6, -1, 7, 8, 9, -1, 10, 11, -1, -1 }, // 4332
{ 0, -1, -1, -1, 1, 2, 3, 4, 5, 6, 7, -1, 8, 9, -1, -1 }, // 1432
{ 0, 1, -1, -1, 2, 3, 4, 5, 6, 7, 8, -1, 9, 10, -1, -1 }, // 2432
{ 0, 1, 2, -1, 3, 4, 5, 6, 7, 8, 9, -1, 10, 11, -1, -1 }, // 3432
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, -1, 11, 12, -1, -1 }, // 4432
{ 0, -1, -1, -1, 1, -1, -1, -1, 2, 3, 4, 5, 6, 7, -1, -1 }, // 1142
{ 0, 1, -1, -1, 2, -1, -1, -1, 3, 4, 5, 6, 7, 8, -1, -1 }, // 2142
{ 0, 1, 2, -1, 3, -1, -1, -1, 4, 5, 6, 7, 8, 9, -1, -1 }, // 3142
{ 0, 1, 2, 3, 4, -1, -1, -1, 5, 6, 7, 8, 9, 10, -1, -1 }, // 4142
{ 0, -1, -1, -1, 1, 2, -1, -1, 3, 4, 5, 6, 7, 8, -1, -1 }, // 1242
{ 0, 1, -1, -1, 2, 3, -1, -1, 4, 5, 6, 7, 8, 9, -1, -1 }, // 2242
{ 0, 1, 2, -1, 3, 4, -1, -1, 5, 6, 7, 8, 9, 10, -1, -1 }, // 3242
{ 0, 1, 2, 3, 4, 5, -1, -1, 6, 7, 8, 9, 10, 11, -1, -1 }, // 4242
{ 0, -1, -1, -1, 1, 2, 3, -1, 4, 5, 6, 7, 8, 9, -1, -1 }, // 1342
{ 0, 1, -1, -1, 2, 3, 4, -1, 5, 6, 7, 8, 9, 10, -1, -1 }, // 2342
{ 0, 1, 2, -1, 3, 4, 5, -1, 6, 7, 8, 9, 10, 11, -1, -1 }, // 3342
{ 0, 1, 2, 3, 4, 5, 6, -1, 7, 8, 9, 10, 11, 12, -1, -1 }, // 4342
{ 0, -1, -1, -1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, -1, -1 }, // 1442
{ 0, 1, -1, -1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, -1, -1 }, // 2442
{ 0, 1, 2, -1, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, -1, -1 }, // 3442
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, -1, -1 }, // 4442
{ 0, -1, -1, -1, 1, -1, -1, -1, 2, -1, -1, -1, 3, 4, 5, -1 }, // 1113
{ 0, 1, -1, -1, 2, -1, -1, -1, 3, -1, -1, -1, 4, 5, 6, -1 }, // 2113
{ 0, 1, 2, -1, 3, -1, -1, -1, 4, -1, -1, -1, 5, 6, 7, -1 }, // 3113
{ 0, 1, 2, 3, 4, -1, -1, -1, 5, -1, -1, -1, 6, 7, 8, -1 }, // 4113
{ 0, -1, -1, -1, 1, 2, -1, -1, 3, -1, -1, -1, 4, 5, 6, -1 }, // 1213
{ 0, 1, -1, -1, 2, 3, -1, -1, 4, -1, -1, -1, 5, 6, 7, -1 }, // 2213
{ 0, 1, 2, -1, 3, 4, -1, -1, 5, -1, -1, -1, 6, 7, 8, -1 }, // 3213
{ 0, 1, 2, 3, 4, 5, -1, -1, 6, -1, -1, -1, 7, 8, 9, -1 }, // 4213
{ 0, -1, -1, -1, 1, 2, 3, -1, 4, -1, -1, -1, 5, 6, 7, -1 }, // 1313
{ 0, 1, -1, -1, 2, 3, 4, -1, 5, -1, -1, -1, 6, 7, 8, -1 }, // 2313
{ 0, 1, 2, -1, 3, 4, 5, -1, 6, -1, -1, -1, 7, 8, 9, -1 }, // 3313
{ 0, 1, 2, 3, 4, 5, 6, -1, 7, -1, -1, -1, 8, 9, 10, -1 }, // 4313
{ 0, -1, -1, -1, 1, 2, 3, 4, 5, -1, -1, -1, 6, 7, 8, -1 }, // 1413
{ 0, 1, -1, -1, 2, 3, 4, 5, 6, -1, -1, -1, 7, 8, 9, -1 }, // 2413
{ 0, 1, 2, -1, 3, 4, 5, 6, 7, -1, -1, -1, 8, 9, 10, -1 }, // 3413
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, -1, -1, -1, 9, 10, 11, -1 }, // 4413
{ 0, -1, -1, -1, 1, -1, -1, -1, 2, 3, -1, -1, 4, 5, 6, -1 }, // 1123
{ 0, 1, -1, -1, 2, -1, -1, -1, 3, 4, -1, -1, 5, 6, 7, -1 }, // 2123
{ 0, 1, 2, -1, 3, -1, -1, -1, 4, 5, -1, -1, 6, 7, 8, -1 }, // 3123
{ 0, 1, 2, 3, 4, -1, -1, -1, 5, 6, -1, -1, 7, 8, 9, -1 }, // 4123
{ 0, -1, -1, -1, 1, 2, -1, -1, 3, 4, -1, -1, 5, 6, 7, -1 }, // 1223
{ 0, 1, -1, -1, 2, 3, -1, -1, 4, 5, -1, -1, 6, 7, 8, -1 }, // 2223
{ 0, 1, 2, -1, 3, 4, -1, -1, 5, 6, -1, -1, 7, 8, 9, -1 }, // 3223
{ 0, 1, 2, 3, 4, 5, -1, -1, 6, 7, -1, -1, 8, 9, 10, -1 }, // 4223
{ 0, -1, -1, -1, 1, 2, 3, -1, 4, 5, -1, -1, 6, 7, 8, -1 }, // 1323
{ 0, 1, -1, -1, 2, 3, 4, -1, 5, 6, -1, -1, 7, 8, 9, -1 }, // 2323
{ 0, 1, 2, -1, 3, 4, 5, -1, 6, 7, -1, -1, 8, 9, 10, -1 }, // 3323
{ 0, 1, 2, 3, 4, 5, 6, -1, 7, 8, -1, -1, 9, 10, 11, -1 }, // 4323
{ 0, -1, -1, -1, 1, 2, 3, 4, 5, 6, -1, -1, 7, 8, 9, -1 }, // 1423
{ 0, 1, -1, -1, 2, 3, 4, 5, 6, 7, -1, -1, 8, 9, 10, -1 }, // 2423
{ 0, 1, 2, -1, 3, 4, 5, 6, 7, 8, -1, -1, 9, 10, 11, -1 }, // 3423
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, 10, 11, 12, -1 }, // 4423
{ 0, -1, -1, -1, 1, -1, -1, -1, 2, 3, 4, -1, 5, 6, 7, -1 }, // 1133
{ 0, 1, -1, -1, 2, -1, -1, -1, 3, 4, 5, -1, 6, 7, 8, -1 }, // 2133
{ 0, 1, 2, -1, 3, -1, -1, -1, 4, 5, 6, -1, 7, 8, 9, -1 }, // 3133
{ 0, 1, 2, 3, 4, -1, -1, -1, 5, 6, 7, -1, 8, 9, 10, -1 }, // 4133
{ 0, -1, -1, -1, 1, 2, -1, -1, 3, 4, 5, -1, 6, 7, 8, -1 }, // 1233
{ 0, 1, -1, -1, 2, 3, -1, -1, 4, 5, 6, -1, 7, 8, 9, -1 }, // 2233
{ 0, 1, 2, -1, 3, 4, -1, -1, 5, 6, 7, -1, 8, 9, 10, -1 }, // 3233
{ 0, 1, 2, 3, 4, 5, -1, -1, 6, 7, 8, -1, 9, 10, 11, -1 }, // 4233
{ 0, -1, -1, -1, 1, 2, 3, -1, 4, 5, 6, -1, 7, 8, 9, -1 }, // 1333
{ 0, 1, -1, -1, 2, 3, 4, -1, 5, 6, 7, -1, 8, 9, 10, -1 }, // 2333
{ 0, 1, 2, -1, 3, 4, 5, -1, 6, 7, 8, -1, 9, 10, 11, -1 }, // 3333
{ 0, 1, 2, 3, 4, 5, 6, -1, 7, 8, 9, -1, 10, 11, 12, -1 }, // 4333
{ 0, -1, -1, -1, 1, 2, 3, 4, 5, 6, 7, -1, 8, 9, 10, -1 }, // 1433
{ 0, 1, -1, -1, 2, 3, 4, 5, 6, 7, 8, -1, 9, 10, 11, -1 }, // 2433
{ 0, 1, 2, -1, 3, 4, 5, 6, 7, 8, 9, -1, 10, 11, 12, -1 }, // 3433
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, -1, 11, 12, 13, -1 }, // 4433
{ 0, -1, -1, -1, 1, -1, -1, -1, 2, 3, 4, 5, 6, 7, 8, -1 }, // 1143
{ 0, 1, -1, -1, 2, -1, -1, -1, 3, 4, 5, 6, 7, 8, 9, -1 }, // 2143
{ 0, 1, 2, -1, 3, -1, -1, -1, 4, 5, 6, 7, 8, 9, 10, -1 }, // 3143
{ 0, 1, 2, 3, 4, -1, -1, -1, 5, 6, 7, 8, 9, 10, 11, -1 }, // 4143
{ 0, -1, -1, -1, 1, 2, -1, -1, 3, 4, 5, 6, 7, 8, 9, -1 }, // 1243
{ 0, 1, -1, -1, 2, 3, -1, -1, 4, 5, 6, 7, 8, 9, 10, -1 }, // 2243
{ 0, 1, 2, -1, 3, 4, -1, -1, 5, 6, 7, 8, 9, 10, 11, -1 }, // 3243
{ 0, 1, 2, 3, 4, 5, -1, -1, 6, 7, 8, 9, 10, 11, 12, -1 }, // 4243
{ 0, -1, -1, -1, 1, 2, 3, -1, 4, 5, 6, 7, 8, 9, 10, -1 }, // 1343
{ 0, 1, -1, -1, 2, 3, 4, -1, 5, 6, 7, 8, 9, 10, 11, -1 }, // 2343
{ 0, 1, 2, -1, 3, 4, 5, -1, 6, 7, 8, 9, 10, 11, 12, -1 }, // 3343
{ 0, 1, 2, 3, 4, 5, 6, -1, 7, 8, 9, 10, 11, 12, 13, -1 }, // 4343
{ 0, -1, -1, -1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, -1 }, // 1443
{ 0, 1, -1, -1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, -1 }, // 2443
{ 0, 1, 2, -1, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, -1 }, // 3443
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, -1 }, // 4443
{ 0, -1, -1, -1, 1, -1, -1, -1, 2, -1, -1, -1, 3, 4, 5, 6 }, // 1114
{ 0, 1, -1, -1, 2, -1, -1, -1, 3, -1, -1, -1, 4, 5, 6, 7 }, // 2114
{ 0, 1, 2, -1, 3, -1, -1, -1, 4, -1, -1, -1, 5, 6, 7, 8 }, // 3114
{ 0, 1, 2, 3, 4, -1, -1, -1, 5, -1, -1, -1, 6, 7, 8, 9 }, // 4114
{ 0, -1, -1, -1, 1, 2, -1, -1, 3, -1, -1, -1, 4, 5, 6, 7 }, // 1214
{ 0, 1, -1, -1, 2, 3, -1, -1, 4, -1, -1, -1, 5, 6, 7, 8 }, // 2214
{ 0, 1, 2, -1, 3, 4, -1, -1, 5, -1, -1, -1, 6, 7, 8, 9 }, // 3214
{ 0, 1, 2, 3, 4, 5, -1, -1, 6, -1, -1, -1, 7, 8, 9, 10 }, // 4214
{ 0, -1, -1, -1, 1, 2, 3, -1, 4, -1, -1, -1, 5, 6, 7, 8 }, // 1314
{ 0, 1, -1, -1, 2, 3, 4, -1, 5, -1, -1, -1, 6, 7, 8, 9 }, // 2314
{ 0, 1, 2, -1, 3, 4, 5, -1, 6, -1, -1, -1, 7, 8, 9, 10 }, // 3314
{ 0, 1, 2, 3, 4, 5, 6, -1, 7, -1, -1, -1, 8, 9, 10, 11 }, // 4314
{ 0, -1, -1, -1, 1, 2, 3, 4, 5, -1, -1, -1, 6, 7, 8, 9 }, // 1414
{ 0, 1, -1, -1, 2, 3, 4, 5, 6, -1, -1, -1, 7, 8, 9, 10 }, // 2414
{ 0, 1, 2, -1, 3, 4, 5, 6, 7, -1, -1, -1, 8, 9, 10, 11 }, // 3414
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, -1, -1, -1, 9, 10, 11, 12 }, // 4414
{ 0, -1, -1, -1, 1, -1, -1, -1, 2, 3, -1, -1, 4, 5, 6, 7 }, // 1124
{ 0, 1, -1, -1, 2, -1, -1, -1, 3, 4, -1, -1, 5, 6, 7, 8 }, // 2124
{ 0, 1, 2, -1, 3, -1, -1, -1, 4, 5, -1, -1, 6, 7, 8, 9 }, // 3124
{ 0, 1, 2, 3, 4, -1, -1, -1, 5, 6, -1, -1, 7, 8, 9, 10 }, // 4124
{ 0, -1, -1, -1, 1, 2, -1, -1, 3, 4, -1, -1, 5, 6, 7, 8 }, // 1224
{ 0, 1, -1, -1, 2, 3, -1, -1, 4, 5, -1, -1, 6, 7, 8, 9 }, // 2224
{ 0, 1, 2, -1, 3, 4, -1, -1, 5, 6, -1, -1, 7, 8, 9, 10 }, // 3224
{ 0, 1, 2, 3, 4, 5, -1, -1, 6, 7, -1, -1, 8, 9, 10, 11 }, // 4224
{ 0, -1, -1, -1, 1, 2, 3, -1, 4, 5, -1, -1, 6, 7, 8, 9 }, // 1324
{ 0, 1, -1, -1, 2, 3, 4, -1, 5, 6, -1, -1, 7, 8, 9, 10 }, // 2324
{ 0, 1, 2, -1, 3, 4, 5, -1, 6, 7, -1, -1, 8, 9, 10, 11 }, // 3324
{ 0, 1, 2, 3, 4, 5, 6, -1, 7, 8, -1, -1, 9, 10, 11, 12 }, // 4324
{ 0, -1, -1, -1, 1, 2, 3, 4, 5, 6, -1, -1, 7, 8, 9, 10 }, // 1424
{ 0, 1, -1, -1, 2, 3, 4, 5, 6, 7, -1, -1, 8, 9, 10, 11 }, // 2424
{ 0, 1, 2, -1, 3, 4, 5, 6, 7, 8, -1, -1, 9, 10, 11, 12 }, // 3424
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, 10, 11, 12, 13 }, // 4424
{ 0, -1, -1, -1, 1, -1, -1, -1, 2, 3, 4, -1, 5, 6, 7, 8 }, // 1134
{ 0, 1, -1, -1, 2, -1, -1, -1, 3, 4, 5, -1, 6, 7, 8, 9 }, // 2134
{ 0, 1, 2, -1, 3, -1, -1, -1, 4, 5, 6, -1, 7, 8, 9, 10 }, // 3134
{ 0, 1, 2, 3, 4, -1, -1, -1, 5, 6, 7, -1, 8, 9, 10, 11 }, // 4134
{ 0, -1, -1, -1, 1, 2, -1, -1, 3, 4, 5, -1, 6, 7, 8, 9 }, // 1234
{ 0, 1, -1, -1, 2, 3, -1, -1, 4, 5, 6, -1, 7, 8, 9, 10 }, // 2234
{ 0, 1, 2, -1, 3, 4, -1, -1, 5, 6, 7, -1, 8, 9, 10, 11 }, // 3234
{ 0, 1, 2, 3, 4, 5, -1, -1, 6, 7, 8, -1, 9, 10, 11, 12 }, // 4234
{ 0, -1, -1, -1, 1, 2, 3, -1, 4, 5, 6, -1, 7, 8, 9, 10 }, // 1334
{ 0, 1, -1, -1, 2, 3, 4, -1, 5, 6, 7, -1, 8, 9, 10, 11 }, // 2334
{ 0, 1, 2, -1, 3, 4, 5, -1, 6, 7, 8, -1, 9, 10, 11, 12 }, // 3334
{ 0, 1, 2, 3, 4, 5, 6, -1, 7, 8, 9, -1, 10, 11, 12, 13 }, // 4334
{ 0, -1, -1, -1, 1, 2, 3, 4, 5, 6, 7, -1, 8, 9, 10, 11 }, // 1434
{ 0, 1, -1, -1, 2, 3, 4, 5, 6, 7, 8, -1, 9, 10, 11, 12 }, // 2434
{ 0, 1, 2, -1, 3, 4, 5, 6, 7, 8, 9, -1, 10, 11, 12, 13 }, // 3434
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, -1, 11, 12, 13, 14 }, // 4434
{ 0, -1, -1, -1, 1, -1, -1, -1, 2, 3, 4, 5, 6, 7, 8, 9 }, // 1144
{ 0, 1, -1, -1, 2, -1, -1, -1, 3, 4, 5, 6, 7, 8, 9, 10 }, // 2144
{ 0, 1, 2, -1, 3, -1, -1, -1, 4, 5, 6, 7, 8, 9, 10, 11 }, // 3144
{ 0, 1, 2, 3, 4, -1, -1, -1, 5, 6, 7, 8, 9, 10, 11, 12 }, // 4144
{ 0, -1, -1, -1, 1, 2, -1, -1, 3, 4, 5, 6, 7, 8, 9, 10 }, // 1244
{ 0, 1, -1, -1, 2, 3, -1, -1, 4, 5, 6, 7, 8, 9, 10, 11 }, // 2244
{ 0, 1, 2, -1, 3, 4, -1, -1, 5, 6, 7, 8, 9, 10, 11, 12 }, // 3244
{ 0, 1, 2, 3, 4, 5, -1, -1, 6, 7, 8, 9, 10, 11, 12, 13 }, // 4244
{ 0, -1, -1, -1, 1, 2, 3, -1, 4, 5, 6, 7, 8, 9, 10, 11 }, // 1344
{ 0, 1, -1, -1, 2, 3, 4, -1, 5, 6, 7, 8, 9, 10, 11, 12 }, // 2344
{ 0, 1, 2, -1, 3, 4, 5, -1, 6, 7, 8, 9, 10, 11, 12, 13 }, // 3344
{ 0, 1, 2, 3, 4, 5, 6, -1, 7, 8, 9, 10, 11, 12, 13, 14 }, // 4344
{ 0, -1, -1, -1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 }, // 1444
{ 0, 1, -1, -1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 }, // 2444
{ 0, 1, 2, -1, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 }, // 3444
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 } // 4444
};
static uint8_t _encode_data(uint32_t val, uint8_t *__restrict__ *dataPtrPtr) {
uint8_t *dataPtr = *dataPtrPtr;
uint8_t code;
if (val < (1 << 8)) { // 1 byte
*dataPtr = (uint8_t)(val);
*dataPtrPtr += 1;
code = 0;
} else if (val < (1 << 16)) { // 2 bytes
*(uint16_t *) dataPtr = (uint16_t)(val);
*dataPtrPtr += 2;
code = 1;
} else if (val < (1 << 24)) { // 3 bytes
*(uint16_t *) dataPtr = (uint16_t)(val);
*(dataPtr + 2) = (uint8_t)(val >> 16);
*dataPtrPtr += 3;
code = 2;
} else { // 4 bytes
*(uint32_t *) dataPtr = val;
*dataPtrPtr += 4;
code = 3;
}
return code;
}
static uint8_t *svb_encode_scalar_d1_init(const uint32_t *in,
uint8_t *__restrict__ keyPtr, uint8_t *__restrict__ dataPtr,
uint32_t count, uint32_t prev) {
if (count == 0)
return dataPtr; // exit immediately if no data
uint8_t shift = 0; // cycles 0, 2, 4, 6, 0, 2, 4, 6, ...
uint8_t key = 0;
for (uint32_t c = 0; c < count; c++) {
if (shift == 8) {
shift = 0;
*keyPtr++ = key;
key = 0;
}
uint32_t val = in[c] - prev;
prev = in[c];
uint8_t code = _encode_data(val, &dataPtr);
key |= code << shift;
shift += 2;
}
*keyPtr = key; // write last key (no increment needed)
return dataPtr; // pointer to first unused data byte
}
size_t streamvbyte_delta_encode(const uint32_t *in, uint32_t count, uint8_t *out,
uint32_t prev) {
uint8_t *keyPtr = out; // keys come immediately after 32-bit count
uint32_t keyLen = (count + 3) / 4; // 2-bits rounded to full byte
uint8_t *dataPtr = keyPtr + keyLen; // variable byte data after all keys
return svb_encode_scalar_d1_init(in, keyPtr, dataPtr, count, prev) - out;
}
static inline __m128i _decode_avx(uint32_t key, const uint8_t *__restrict__ *dataPtrPtr) {
uint8_t len = lengthTable[key];
__m128i Data = _mm_loadu_si128((__m128i *) *dataPtrPtr);
__m128i Shuf = *(__m128i *) &shuffleTable[key];
Data = _mm_shuffle_epi8(Data, Shuf);
*dataPtrPtr += len;
return Data;
}
#define BroadcastLastXMM 0xFF // bits 0-7 all set to choose highest element
static inline void _write_avx(uint32_t *out, __m128i Vec) {
_mm_storeu_si128((__m128i *) out, Vec);
}
static __m128i _write_avx_d1(uint32_t *out, __m128i Vec, __m128i Prev) {
__m128i Add = _mm_slli_si128(Vec, 4); // Cycle 1: [- A B C] (already done)
Prev = _mm_shuffle_epi32(Prev, BroadcastLastXMM); // Cycle 2: [P P P P]
Vec = _mm_add_epi32(Vec, Add); // Cycle 2: [A AB BC CD]
Add = _mm_slli_si128(Vec, 8); // Cycle 3: [- - A AB]
Vec = _mm_add_epi32(Vec, Prev); // Cycle 3: [PA PAB PBC PCD]
Vec = _mm_add_epi32(Vec, Add); // Cycle 4: [PA PAB PABC PABCD]
_write_avx(out, Vec);
return Vec;
}
#ifndef _MSC_VER
static __m128i High16To32 = {0xFFFF0B0AFFFF0908, 0xFFFF0F0EFFFF0D0C};
#else
static __m128i High16To32 = {8, 9, -1, -1, 10, 11, -1, -1,
12, 13, -1, -1, 14, 15, -1, -1};
#endif
static inline __m128i _write_16bit_avx_d1(uint32_t *out, __m128i Vec, __m128i Prev) {
// vec == [A B C D E F G H] (16 bit values)
__m128i Add = _mm_slli_si128(Vec, 2); // [- A B C D E F G]
Prev = _mm_shuffle_epi32(Prev, BroadcastLastXMM); // [P P P P] (32-bit)
Vec = _mm_add_epi32(Vec, Add); // [A AB BC CD DE FG GH]
Add = _mm_slli_si128(Vec, 4); // [- - A AB BC CD DE EF]
Vec = _mm_add_epi32(Vec, Add); // [A AB ABC ABCD BCDE CDEF DEFG EFGH]
__m128i V1 = _mm_cvtepu16_epi32(Vec); // [A AB ABC ABCD] (32-bit)
V1 = _mm_add_epi32(V1, Prev); // [PA PAB PABC PABCD] (32-bit)
__m128i V2 =
_mm_shuffle_epi8(Vec, High16To32); // [BCDE CDEF DEFG EFGH] (32-bit)
V2 = _mm_add_epi32(V1, V2); // [PABCDE PABCDEF PABCDEFG PABCDEFGH] (32-bit)
_write_avx(out, V1);
_write_avx(out + 4, V2);
return V2;
}
static inline uint32_t _decode_data(const uint8_t **dataPtrPtr, uint8_t code) {
const uint8_t *dataPtr = *dataPtrPtr;
uint32_t val;
if (code == 0) { // 1 byte
val = (uint32_t) * dataPtr;
dataPtr += 1;
} else if (code == 1) { // 2 bytes
val = (uint32_t) * (uint16_t *) dataPtr;
dataPtr += 2;
} else if (code == 2) { // 3 bytes
val = (uint32_t) * (uint16_t *) dataPtr;
val |= *(dataPtr + 2) << 16;
dataPtr += 3;
} else { // code == 3
val = *(uint32_t *) dataPtr; // 4 bytes
dataPtr += 4;
}
*dataPtrPtr = dataPtr;
return val;
}
const uint8_t *svb_decode_scalar_d1_init(uint32_t *outPtr, const uint8_t *keyPtr,
const uint8_t *dataPtr, uint32_t count,
uint32_t prev) {
if (count == 0)
return dataPtr; // no reads or writes if no data
uint8_t shift = 0;
uint32_t key = *keyPtr++;
for (uint32_t c = 0; c < count; c++) {
if (shift == 8) {
shift = 0;
key = *keyPtr++;
}
uint32_t val = _decode_data(&dataPtr, (key >> shift) & 0x3);
val += prev;
*outPtr++ = val;
prev = val;
shift += 2;
}
return dataPtr; // pointer to first unused byte after end
}
const uint8_t *svb_decode_avx_d1_init(uint32_t *out, const uint8_t *__restrict__ keyPtr,
const uint8_t *__restrict__ dataPtr, uint64_t count, uint32_t prev) {
uint64_t keybytes = count / 4; // number of key bytes
if (keybytes >= 8) {
__m128i Prev = _mm_set1_epi32(prev);
__m128i Data;
int64_t Offset = -(int64_t) keybytes / 8 + 1;
const uint64_t *keyPtr64 = (const uint64_t *) keyPtr - Offset;
uint64_t nextkeys = keyPtr64[Offset];
for (; Offset != 0; ++Offset) {
uint64_t keys = nextkeys;
nextkeys = keyPtr64[Offset + 1];
// faster 16-bit delta since we only have 8-bit values
if (!keys) { // 32 1-byte ints in a row
Data = _mm_cvtepu8_epi16(_mm_lddqu_si128((__m128i *) (dataPtr)));
Prev = _write_16bit_avx_d1(out, Data, Prev);
Data = _mm_cvtepu8_epi16(
_mm_lddqu_si128((__m128i *) (dataPtr + 8)));
Prev = _write_16bit_avx_d1(out + 8, Data, Prev);
Data = _mm_cvtepu8_epi16(
_mm_lddqu_si128((__m128i *) (dataPtr + 16)));
Prev = _write_16bit_avx_d1(out + 16, Data, Prev);
Data = _mm_cvtepu8_epi16(
_mm_lddqu_si128((__m128i *) (dataPtr + 24)));
Prev = _write_16bit_avx_d1(out + 24, Data, Prev);
out += 32;
dataPtr += 32;
continue;
}
Data = _decode_avx(keys & 0x00FF, &dataPtr);
Prev = _write_avx_d1(out, Data, Prev);
Data = _decode_avx((keys & 0xFF00) >> 8, &dataPtr);
Prev = _write_avx_d1(out + 4, Data, Prev);
keys >>= 16;
Data = _decode_avx((keys & 0x00FF), &dataPtr);
Prev = _write_avx_d1(out + 8, Data, Prev);
Data = _decode_avx((keys & 0xFF00) >> 8, &dataPtr);
Prev = _write_avx_d1(out + 12, Data, Prev);
keys >>= 16;
Data = _decode_avx((keys & 0x00FF), &dataPtr);
Prev = _write_avx_d1(out + 16, Data, Prev);
Data = _decode_avx((keys & 0xFF00) >> 8, &dataPtr);
Prev = _write_avx_d1(out + 20, Data, Prev);
keys >>= 16;
Data = _decode_avx((keys & 0x00FF), &dataPtr);
Prev = _write_avx_d1(out + 24, Data, Prev);
Data = _decode_avx((keys & 0xFF00) >> 8, &dataPtr);
Prev = _write_avx_d1(out + 28, Data, Prev);
out += 32;
}
{
uint64_t keys = nextkeys;
// faster 16-bit delta since we only have 8-bit values
if (!keys) { // 32 1-byte ints in a row
Data = _mm_cvtepu8_epi16(_mm_lddqu_si128((__m128i *) (dataPtr)));
Prev = _write_16bit_avx_d1(out, Data, Prev);
Data = _mm_cvtepu8_epi16(
_mm_lddqu_si128((__m128i *) (dataPtr + 8)));
Prev = _write_16bit_avx_d1(out + 8, Data, Prev);
Data = _mm_cvtepu8_epi16(
_mm_lddqu_si128((__m128i *) (dataPtr + 16)));
Prev = _write_16bit_avx_d1(out + 16, Data, Prev);
Data = _mm_cvtepu8_epi16(
_mm_loadl_epi64((__m128i *) (dataPtr + 24)));
Prev = _write_16bit_avx_d1(out + 24, Data, Prev);
out += 32;
dataPtr += 32;
} else {
Data = _decode_avx(keys & 0x00FF, &dataPtr);
Prev = _write_avx_d1(out, Data, Prev);
Data = _decode_avx((keys & 0xFF00) >> 8, &dataPtr);
Prev = _write_avx_d1(out + 4, Data, Prev);
keys >>= 16;
Data = _decode_avx((keys & 0x00FF), &dataPtr);
Prev = _write_avx_d1(out + 8, Data, Prev);
Data = _decode_avx((keys & 0xFF00) >> 8, &dataPtr);
Prev = _write_avx_d1(out + 12, Data, Prev);
keys >>= 16;
Data = _decode_avx((keys & 0x00FF), &dataPtr);
Prev = _write_avx_d1(out + 16, Data, Prev);
Data = _decode_avx((keys & 0xFF00) >> 8, &dataPtr);
Prev = _write_avx_d1(out + 20, Data, Prev);
keys >>= 16;
Data = _decode_avx((keys & 0x00FF), &dataPtr);
Prev = _write_avx_d1(out + 24, Data, Prev);
Data = _decode_avx((keys & 0xFF00) >> 8, &dataPtr);
Prev = _write_avx_d1(out + 28, Data, Prev);
out += 32;
}
}
prev = out[-1];
}
uint64_t consumedkeys = keybytes - (keybytes & 7);
return svb_decode_scalar_d1_init(out, keyPtr + consumedkeys, dataPtr,
count & 31, prev);
}
size_t streamvbyte_delta_decode(const uint8_t* in, uint32_t* out,
uint32_t count, uint32_t prev) {
uint32_t keyLen = ((count + 3) / 4); // 2-bits per key (rounded up)
const uint8_t *keyPtr = in;
const uint8_t *dataPtr = keyPtr + keyLen; // data starts at end of keys
return svb_decode_avx_d1_init(out, keyPtr, dataPtr, count, prev) - in;
}
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