Implements zero based bitsets of size up to huge(0_int32).
The current code uses 64 bit integers to store the bits and uses all 64 bits.
The code assumes two's complement integers, and treats negative integers as
having the sign bit set.
(Specification)
This module defines a derived type, procedures, a variable, and
constants to be used for logging information and reporting errors
in Fortran applications.
(Specification)
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