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| author | June McEnroe <june@causal.agency> | 2018-11-08 21:40:50 -0500 |
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| committer | June McEnroe <june@causal.agency> | 2020-12-27 22:10:42 -0500 |
| commit | 470523cdad6c92d3b88a82f5e476cd4a4c61bcd2 (patch) | |
| tree | 8217a4f88c46cc5f2792e17025d7044d2d0b2d28 /adler32.3 | |
| download | src-470523cdad6c92d3b88a82f5e476cd4a4c61bcd2.tar.gz src-470523cdad6c92d3b88a82f5e476cd4a4c61bcd2.zip | |
Convert zlib.h comments to mdoc
Diffstat (limited to '')
| -rw-r--r-- | adler32.3 | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/adler32.3 b/adler32.3 new file mode 100644 index 00000000..d713d952 --- /dev/null +++ b/adler32.3 @@ -0,0 +1,65 @@ +.Dd January 15, 2017 +.Dt ADLER32 3 +.Os +. +.Sh NAME +.Nm adler32 , +.Nm adler32_z +.Nd update Adler-32 checksum +. +.Sh LIBRARY +.Lb libz +. +.Sh SYNOPSIS +.In zlib.h +.Ft uLong +.Fn adler32 "uLong adler" "const Bytef *buf" "uInt len" +.Ft uLong +.Fn adler32_z "uLong adler" "const Bytef *buf" "z_size_t len" +. +.Sh DESCRIPTION +Update a running Adler-32 checksum with the bytes +.Fa "buf[0..len-1]" +and return the updated checksum. +If +.Fa buf +is +.Dv Z_NULL , +this function returns +the required initial value for the checksum. +. +.Pp +An Adler-32 checksum is almost as reliable as a CRC-32 +but can be computed much faster. +. +.Pp +.Fn adler32_z +is the same as +.Fn adler32 , +but with a +.Vt size_t +length. +. +.Sh EXAMPLES +.Bd -literal -offset indent +uLong adler = adler32(0L, Z_NULL, 0); + +while (read_buffer(buffer, length) != EOF) { + adler = adler32(adler, buffer, length); +} +if (adler != original_adler) error(); +.Ed +. +.Sh SEE ALSO +.Xr adler32_combine 3 , +.Xr crc32 3 +. +.Sh HISTORY +This manual page was converted from +.In zlib.h +to mdoc format by +.An C. McEnroe Aq Mt june@causal.agency . +. +.Sh AUTHORS +.An Jean-loup Gailly Aq Mt jloup@gzip.org +.An Mark Adler Aq Mt madler@alumni.caltech.edu |