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grouped all histogram functions into hist.c

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renamed functions with HIST_* prefix
This commit is contained in:
Yann Collet
2018-06-13 19:49:31 -04:00
parent fa41bcc2c2
commit 2d76defbfe
11 changed files with 382 additions and 260 deletions
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tests/decodecorpus.c
+8 -4
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@@ -437,7 +437,8 @@ static size_t writeHufHeader(U32* seed, HUF_CElt* hufTable, void* dst, size_t ds
U32 count[HUF_SYMBOLVALUE_MAX+1];
/* Scan input and build symbol stats */
{ size_t const largest = FSE_count_wksp (count, &maxSymbolValue, (const BYTE*)src, srcSize, WKSP);
{ size_t const largest = HIST_count_wksp (count, &maxSymbolValue, (const BYTE*)src, srcSize, WKSP);
assert(!HIST_isError(largest));
if (largest == srcSize) { *ostart = ((const BYTE*)src)[0]; return 0; } /* single symbol, rle */
if (largest <= (srcSize >> 7)+1) return 0; /* Fast heuristic : not compressible enough */
}
@@ -834,7 +835,8 @@ static size_t writeSequences(U32* seed, frame_t* frame, seqStore_t* seqStorePtr,
/* CTable for Literal Lengths */
{ U32 max = MaxLL;
size_t const mostFrequent = FSE_countFast_wksp(count, &max, llCodeTable, nbSeq, WKSP);
size_t const mostFrequent = HIST_countFast_wksp(count, &max, llCodeTable, nbSeq, WKSP); /* cannot fail */
assert(!HIST_isError(mostFrequent));
if (mostFrequent == nbSeq) {
/* do RLE if we have the chance */
*op++ = llCodeTable[0];
@@ -865,7 +867,8 @@ static size_t writeSequences(U32* seed, frame_t* frame, seqStore_t* seqStorePtr,
/* CTable for Offsets */
/* see Literal Lengths for descriptions of mode choices */
{ U32 max = MaxOff;
size_t const mostFrequent = FSE_countFast_wksp(count, &max, ofCodeTable, nbSeq, WKSP);
size_t const mostFrequent = HIST_countFast_wksp(count, &max, ofCodeTable, nbSeq, WKSP); /* cannot fail */
assert(!HIST_isError(mostFrequent));
if (mostFrequent == nbSeq) {
*op++ = ofCodeTable[0];
FSE_buildCTable_rle(CTable_OffsetBits, (BYTE)max);
@@ -892,7 +895,8 @@ static size_t writeSequences(U32* seed, frame_t* frame, seqStore_t* seqStorePtr,
/* CTable for MatchLengths */
/* see Literal Lengths for descriptions of mode choices */
{ U32 max = MaxML;
size_t const mostFrequent = FSE_countFast_wksp(count, &max, mlCodeTable, nbSeq, WKSP);
size_t const mostFrequent = HIST_countFast_wksp(count, &max, mlCodeTable, nbSeq, WKSP); /* cannot fail */
assert(!HIST_isError(mostFrequent));
if (mostFrequent == nbSeq) {
*op++ = *mlCodeTable;
FSE_buildCTable_rle(CTable_MatchLength, (BYTE)max);