SWISS::CRC64(3pm) User Contributed Perl Documentation SWISS::CRC64(3pm)CRC64 perl module documentation
NAME
CRC64 - Calculate the cyclic redundancy check.
SYNOPSIS
use SWISS::CRC64;
$crc = SWISS::CRC64::crc64("IHATEMATH");
#returns the string "E3DCADD69B01ADD1"
($crc_low, $crc_high) = SWISS::CRC64::crc64("IHATEMATH");
#returns two 32-bit unsigned integers, 3822890454 and 2600578513
DESCRIPTION
SWISS-PROT + TREMBL use a 64-bit Cyclic Redundancy Check for the amino acid sequences.
The algorithm to compute the CRC is described in the ISO 3309 standard. The generator polynomial is x64 + x4 + x3 + x + 1. Reference: W.
H. Press, S. A. Teukolsky, W. T. Vetterling, and B. P. Flannery, "Numerical recipes in C", 2nd ed., Cambridge University Press. Pages
896ff.
Functions
crc64 string
Calculate the CRC64 (cyclic redundancy checksum) for string.
In array context, returns two integers equal to the higher and lower 32 bits of the CRC64. In scalar context, returns a 16-character
string containing the CRC64 in hexadecimal format.
AUTHOR
Alexandre Gattiker, gattiker@isb-sib.ch
ACKNOWLEDGEMENTS
Based on SPcrc, a C implementation by Christian Iseli, available at ftp://ftp.ebi.ac.uk/pub/software/swissprot/Swissknife/old/SPcrc.tar.gz
perl v5.10.1 2006-01-26 SWISS::CRC64(3pm)
Check Out this Related Man Page
SWISS::DTs(3pm) User Contributed Perl Documentation SWISS::DTs(3pm)Name
SWISS::DTs
Description
SWISS::DTs represents the DT lines within an Swiss-Prot + TrEMBL entry as specified in the user manual
http://www.expasy.org/sprot/userman.html .
Inherits from
SWISS::BaseClass.pm
Attributes
"CREATED_date"
Creation date
"ANN_date"
Last annotation update
"SQ_date"
Last Sequence update
"CREATED_rel"
Created for release
"ANN_rel"
Last annotation for release
"SQ_rel"
Last sequence update for release
"ANN_version"
Version number for entry annotation
"SQ_version"
Version number for sequence
Methods
Standard methods
new
fromText
toText
sort
Writing methods
set_Created ($date, $release)
set_AnnotationUpdate ($date, $release[, $version])
set_SequenceUpdate ($date, $release[, $version])
TRANSITION
The format of the DT line will change in early 2004 from:
DT 01-JUL-1993 (Rel. 26, Created)
DT 01-JUL-1993 (Rel. 26, Last sequence update)
DT 28-FEB-2003 (Rel. 41, Last annotation update)
to:
DT 01-JUL-1993, integrated into UniProtKB/Swiss-Prot.
DT 01-JUL-1993, sequence version 36.
DT 28-FEB-2003, entry version 54.
This module supports both formats. To convert an entry from the old to the new format, do:
$entry->DTs->CREATED_rel("UniProtKB/Swiss-Prot");
$entry->DTs->ANN_version(54);
$entry->DTs->SQ_version(36);
perl v5.10.1 2008-07-11 SWISS::DTs(3pm)
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