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# Regina - A Normal Surface Theory Calculator
# Python Test Suite Component
#
# Copyright (c) 2015-2025, Ben Burton
# For further details contact Ben Burton (bab@debian.org).
#
# Tests the tightEncode() functions.
#
# This file is a single component of Regina's python test suite. To run
# the python test suite, move to the main python directory in the source
# tree and run "make check".
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.
#
# As an exception, when this program is distributed through (i) the
# App Store by Apple Inc.; (ii) the Mac App Store by Apple Inc.; or
# (iii) Google Play by Google Inc., then that store may impose any
# digital rights management, device limits and/or redistribution
# restrictions that are required by its terms of service.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
def doLong(val):
enc = tightEncoding(val)
print(enc)
for i in [ tightEncoding(Integer(val)), tightEncoding(LargeInteger(val)),
Integer(val).tightEncoding(), LargeInteger(val).tightEncoding() ]:
if i != enc:
print("ERROR: Inconsistent encodings")
if tightDecoding(enc) != val:
print("ERROR: Inconsistent decoding")
def doLarge(val):
enc = tightEncoding(Integer(val))
print(enc)
for i in [ tightEncoding(Integer(val)), tightEncoding(LargeInteger(val)),
Integer(val).tightEncoding(), LargeInteger(val).tightEncoding() ]:
if i != enc:
print("ERROR: Inconsistent encodings")
if str(tightDecoding(enc)) != val:
print("ERROR: Inconsistent decoding")
def doUnsigned(val):
# We can test encodings for unsigned types via AbelianGroup,
# which stores the rank as an unsigned integer.
a = AbelianGroup(val)
print(a.tightEncoding())
doLong(0)
doLong(-44)
doLong(45)
doLong(-89)
doLong(-45)
doLong(46)
doLong(90)
doLong(-4139)
doLong(-90)
doLong(91)
doLong(4140)
doLong(-368639)
doLong(-4140)
doLong(4141)
doLong(368640)
doLong(-368684)
doLong(-368640)
doLong(368641)
doLong(368684)
doLong(-368729)
doLong(-368685)
doLong(368685)
doLong(368729)
doLarge('1000000000000000000000000000000000000000')
doLarge('-1000000000000000000000000000000000000000')
print(tightEncoding(LargeInteger.infinity))
print(LargeInteger.infinity.tightEncoding())
doUnsigned(0)
doUnsigned(1)
doUnsigned(45)
doUnsigned(46)
doUnsigned(90)
doUnsigned(91)
doUnsigned(4140)
doUnsigned(4141)
doUnsigned(368640)
doUnsigned(368641)
doUnsigned(368684)
doUnsigned(368685)
doUnsigned(368729)
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