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Document ldm enabled by default in zstd.h

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senhuang42
2020-10-19 11:02:29 -04:00
parent df470e176b
commit aad436da37
1 changed files with 3 additions and 1 deletions
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lib/zstd.h
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@@ -339,7 +339,9 @@ typedef enum {
* for large inputs, by finding large matches at long distance. * for large inputs, by finding large matches at long distance.
* It increases memory usage and window size. * It increases memory usage and window size.
* Note: enabling this parameter increases default ZSTD_c_windowLog to 128 MB * Note: enabling this parameter increases default ZSTD_c_windowLog to 128 MB
* except when expressly set to a different value. */ * except when expressly set to a different value.
* Note: will be enabled by default if ZSTD_c_windowLog >= 128 MB and
* compression strategy >= ZSTD_btopt (== compression level 16+) */
ZSTD_c_ldmHashLog=161, /* Size of the table for long distance matching, as a power of 2. ZSTD_c_ldmHashLog=161, /* Size of the table for long distance matching, as a power of 2.
* Larger values increase memory usage and compression ratio, * Larger values increase memory usage and compression ratio,
* but decrease compression speed. * but decrease compression speed.