7  *  - FSE source repository : https://github.com/Cyan4973/FiniteStateEntropy
8  *  - Public forum : https://groups.google.com/forum/#!forum/lz4c
10  * This source code is licensed under both the BSD-style license (found in the
13  * You may select, at your option, one of the above-listed licenses.
16 /* --- dependencies --- */
17 #include "../common/mem.h"             /* U32, BYTE, etc. */
23 /* --- Error management --- */
26 /*-**************************************************************
32     const BYTE* ip = (const BYTE*)src;  in HIST_count_simple()
33     const BYTE* const end = ip + srcSize;  in HIST_count_simple()
45     while (!count[maxSymbolValue]) maxSymbolValue--;  in HIST_count_simple()
72     const BYTE* ip = (const BYTE*)source;  in HIST_count_parallel_wksp()
73     const BYTE* const iend = ip+sourceSize;  in HIST_count_parallel_wksp()
77     U32* const Counting2 = Counting1 + 256;  in HIST_count_parallel_wksp()
78     U32* const Counting3 = Counting2 + 256;  in HIST_count_parallel_wksp()
79     U32* const Counting4 = Counting3 + 256;  in HIST_count_parallel_wksp()
88     ZSTD_memset(workSpace, 0, 4*256*sizeof(unsigned));  in HIST_count_parallel_wksp()
92         while (ip < iend-15) {  in HIST_count_parallel_wksp()
94             Counting1[(BYTE) c     ]++;  in HIST_count_parallel_wksp()
95             Counting2[(BYTE)(c>>8) ]++;  in HIST_count_parallel_wksp()
96             Counting3[(BYTE)(c>>16)]++;  in HIST_count_parallel_wksp()
99             Counting1[(BYTE) c     ]++;  in HIST_count_parallel_wksp()
100             Counting2[(BYTE)(c>>8) ]++;  in HIST_count_parallel_wksp()
101             Counting3[(BYTE)(c>>16)]++;  in HIST_count_parallel_wksp()
104             Counting1[(BYTE) c     ]++;  in HIST_count_parallel_wksp()
105             Counting2[(BYTE)(c>>8) ]++;  in HIST_count_parallel_wksp()
106             Counting3[(BYTE)(c>>16)]++;  in HIST_count_parallel_wksp()
109             Counting1[(BYTE) c     ]++;  in HIST_count_parallel_wksp()
110             Counting2[(BYTE)(c>>8) ]++;  in HIST_count_parallel_wksp()
111             Counting3[(BYTE)(c>>16)]++;  in HIST_count_parallel_wksp()
114         ip-=4;  in HIST_count_parallel_wksp()
121         for (s=0; s<256; s++) {  in HIST_count_parallel_wksp()
127         while (!Counting1[maxSymbolValue]) maxSymbolValue--;  in HIST_count_parallel_wksp()
137  * `workSpace` is a writable buffer which must be 4-bytes aligned,
146     if ((size_t)workSpace & 3) return ERROR(GENERIC);  /* must be aligned on 4-bytes boundaries */  in HIST_countFast_wksp()
158     if ((size_t)workSpace & 3) return ERROR(GENERIC);  /* must be aligned on 4-bytes boundaries */  in HIST_count_wksp()