sum - calculate a sum(1) compatible checksum
SYNOPSIS
package require Tcl 8.2
package require sum ?1.0?
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This package provides a Tcl-only implementation of the sum(1) command
which calculates a 16 bit checksum value from the input data.  The BSD
sum algorithm is used by default but the SysV algorithm is also
available.
 
COMMANDS
OPTIONS
EXAMPLES
| % crc::sum "Hello, World!" 37287 | 
| % crc::sum -format 0x%X "Hello, World!" 0x91A7 | 
| % crc::sum -file sum.tcl 13392 |