0.20 - 10 Aug 2019

lib/qce.{c,h} - made pi and s2 public constants;
 most functions now work with complex or real state amplitudes
lib/template.{c.h} - templates for complex or real state amplitudes
main/constants.c - added to create pi and s2 constants
main/QW1.{c,sh} - added for quantum walk in 1 dimension
main/QW-PR.{c,sh} - added for quantum pagerank
main/graph.c - added to generate random graphs
data/QW1* - added QW1 examples
data/QW-PR* - added QW-PR examples
data/graph* - added graph examples

0.19 - 31 May 2019

main/QT.c - updated to combine qubits A1,A0 and R using tensor product
main/SDC.c - added for superdense coding with phase shift error
lib/qce.{c,h} - added product() for tensor product

0.18 - 16 May 2019

mpi/sbatch.sh - added for creating Slurm batch jobs
lib/qce.{c,h} - added: printb() and tangle(); print() options to display
 in binary and show entanglement; collapse() for single qubit measurement;
 init(); X(), CX, Z() transformations
main/*.c - using init(); added -E option to show entanglement
main/QT.{c,sh} - added Quantum Teleportation example

0.17 - 13 April 2019

mpi/BV.c,Makefile - added multithreading using OpenMP

0.16 - 20 March 2019

cleaned up #include's; now qce.h does not include any other headers
changed scripts to use /bin/sh instead of /opt/bin/dash
added mpi/ - BV.c Bernstein & Vazirani example using MPI

0.15 - 2 Jan 2019

lib/qce.c - avoid state copy in qfft() by performing bit-reverse in-place,
 and in H(), Hra(), and Hrp() using updated algorithm;
 added init() function to consolidate initialization of pi and s2 constants;
 added SRAND() to set srand() using time(0) or SRAND environment variable
main/*.c - call SRAND() instead of srand(), display seed
main/{BV.sh,DJ-e.sh} - added alternate command-line argument check
main/diff.sh - added to perform regression check after code changes

0.14 - 30 July 2018

main/corvids.c - added sort and sum options
main/corvids.sh - added for CORVIDS examples

0.13 - 27 July 2018

main/corvids.c - added quantum CORVIDS simulation
data/corvids*.in - corvids examples input data
data/corvids*.out - and output results

0.12 - 10 July 2018

main/Grover.c - added -p option to show state probabilities
main/{DJ-coin.c,Grover-coin.sh} - added for Deutsch-Jozsa/Grover coin analogy
data/DJ-coin-8-0.out - DJ coin examples
data/Grover-coin* - Grover's search coin examples

0.11 - 14 June 2018

lib/qce.{c,h} - added Hrp() to perform Hadamard transformation with phase shift error
main/DJ.c - added phase shift error option
main/DJ-e.sh, data/DJ* - added more DJ examples and plots

0.10 - 11 June 2018

lib/qce.c - fixed bug in Hra(): c00 and c11 are complex
main/BV.c - added non-resonant pulse error option
data/BV* - added more BV examples and plots

0.09 - 5 June 2018

lib/qce.{c,h} - added Hra() to perform Hadamard transformation with non-resonant pulse error
main/Grover.c - added depolarizing noise and non-resonant pulse error options
main/Grover-p.sh - generates plots with/without depolarizing noise
main/Grover.sh - added to generate plots with non-resonant pulse error
other/pulse.m - octave script added for analysis of pulse with resonance error
other/pulse*.png - pulse.m result plots

0.08 - 12 April 2018

main/BV.c - added for Bernstein-Vazirani problem, including depolarizing noise
main/BV.sh, data/BV.txt, data/BV*.gif - added for BV examples and plots
main/Simon.c, DJ.c - added display of 1-P to show that P may not be exactly 1
 (when it should be 1 theoretically) due to finite precision and roundoff errors.

0.07 - 4 March 2018

main/DJ.c - added random balanced and non-constant/non-balanced function examples,
 and stats option to generate statistics for P(constant) vs. number of 1's
data/DJ.gif - DJ stats example
data/Shor.33.23.* - Shor example with period=2

0.06 - 8 Feb 2018

Updated Shor DFT plot, vertical axis now labeled "Probability" instead of magnitude squared.

0.05 - 7 Feb 2018

Changed complex to double complex for compatibility with C99/C11 standard

0.04 - 5 Feb 2018

Renamed project from qemu to qce: Quantum Computing Emulation
Made reduce() more efficient and added range check for measurement

0.03 - 4 Feb 2018

Added font spec to plot scripts:
 setenv GDFONTPATH "/usr/share/fonts/liberation"
 setenv GNUPLOT_DEFAULT_GDFONT "LiberationSans-Regular"
fixes gnuplot bug on some systems:
 Could not find/open font when opening font "arial", using internal non-scalable font
see https://bugzilla.redhat.com/show_bug.cgi?id=537960
data/period.py - rewrote to handle cases where gcd(y,N) != 1

0.02 - 2 Feb 2018

Changed state array name from q.b to q.a to represent amplitude
main/Shor.sh - fixed bug: was not passing L and y command-line arguments to ./Shor
main/Shor.c - modified to not print qubit state for large n unless debug is on
main/period.py - added, finds period of y**a mod N
data/period.* - added to check periodic nature of y**a mod N

0.01 - 30 Jan 2018 - initial version