SMC.HASH - compute smc "hash" bucket for a given userid.

Usage:

B:
   bucket = smc.hash( userid );

C:
   #equate smc_hash smc.hash
   int smc_hash(int *userid);

Where:

userid

is a two-word vector containing the userid to be hashed in BCD with trailing blanks.

bucket

is returned as the System Master catalog hash bucket number of the given userid. This is a number in the range from zero to 31 inclusive.

Description:

SMC.HASH obtains the SMC "hash" bucket for the given userid.

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