BVEC
Binary Vector Representation of Signed Integers

BVEC is a Python library which demonstrates how signed integers can be stored as binary vectors, and arithmetic can be performed on them.

Licensing:

The computer code and data files made available on this web page are distributed under the GNU LGPL license.

Languages:

BVEC is available in a C version and a C++ version and a FORTRAN90 version and a MATLAB version and a Python version.

Related Data and Programs:

UBVEC, a Python library which demonstrates how unsigned binary vectors, strings of 0's and 1's, can represent nonnegative integers or subsets or other mathematical objects, for which various arithmetic and logical operations can be defined.

Source Code:

• bvec_add.py, adds two binary vectors.
• bvec_complement2.py, returns the complement of a binary vector.
• bvec_mul.py, multiplies two binary vectors.
• bvec_next.py, returns the next binary vector.
• bvec_next_grlex.py, returns the next binary vector in GRLEX order.
• bvec_print.py, prints a binary vector.
• bvec_sub.py, subtracts two binary vectors.
• bvec_to_i4.py, converts a (signed) binary vector to an integer.
• bvec_uniform.py, returns a random BVEC.
• i4_bclr.py, sets a given bit of an I4 to 0.
• i4_bset.py, sets a given bit of an I4 to 1.
• i4_btest.py, returns TRUE if the J-th bit of an I4 is 1.
• i4_to_bvec.py, converts an I4 to a (signed) binary vector.
• i4_uniform_ab.py, returns a random I4 in a given range.
• timestamp.py, returns the current YMDHMS date as a timestamp.

Examples and Tests:

• bvec_test.py, calls all the tests.
• bvec_test.sh, runs all the tests.
• bvec_test.txt, the output file.

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