LZ4HC_MAX_CLEVEL
return !lvl || (lvl >= LZ4HC_MIN_CLEVEL && lvl <= LZ4HC_MAX_CLEVEL);
(clevel < LZ4HC_MIN_CLEVEL || clevel > LZ4HC_MAX_CLEVEL))
if (compressionLevel > LZ4HC_MAX_CLEVEL)
compressionLevel = LZ4HC_MAX_CLEVEL;