post-scarcity/unit-tests/bignum-subtract.sh
Simon Brooke 222368bf64 Stage one clean up of test files. Some unit tests are still creating temporary files in
the project root directory, which is still to be fixed; and *I think* known-failing
tests which I don't intend to fix immediately should be marked in some way.
2026-02-14 14:04:41 +00:00

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#!/bin/bash
result=0
#####################################################################
# subtract a smallnum from a smallnum to produce a smallnum
# (right on the boundary)
a=1152921504606846976
b=1
expected='1152921504606846975'
output=`echo "(- $a $b)" | target/psse -v 2 2>psse.log`
actual=`echo $output |\
tail -1 |\
sed 's/\,//g'`
echo -n "$0 => subtracting $b from $a: "
if [ "${expected}" = "${actual}" ]
then
echo "OK"
else
echo "Fail: expected '${expected}', got '${actual}'"
result=`echo "${result} + 1" | bc`
fi
echo -n "$0 => checking no bignum was created: "
grep -v 'BIGNUM!' psse.log > /dev/null
if [ $? -eq "0" ]
then
echo "OK"
else
echo "Fail"
result=`echo "${result} + 1" | bc`
fi
#####################################################################
# subtract a smallnum from a bignum to produce a smallnum
# (just over the boundary)
a='1152921504606846977'
b=1
expected='1152921504606846976'
output=`echo "(- $a $b)" | target/psse -v 2 2>psse.log`
actual=`echo $output |\
tail -1 |\
sed 's/\,//g'`
echo -n "$0 => subtracting $b from $a: "
if [ "${expected}" = "${actual}" ]
then
echo "OK"
else
echo "Fail: expected '${expected}', got '${actual}'"
result=`echo "${result} + 1" | bc`
fi
#####################################################################
# subtract a smallnum from a bignum to produce a smallnum
a='1152921504606846978'
b=1
expected='1152921504606846977'
output=`echo "(- $a $b)" | target/psse -v 2 2>psse.log`
actual=`echo $output |\
tail -1 |\
sed 's/\,//g'`
echo -n "$0 => subtracting $b from $a: "
if [ "${expected}" = "${actual}" ]
then
echo "OK"
else
echo "Fail: expected '${expected}', got '${actual}'"
result=`echo "${result} + 1" | bc`
fi
#####################################################################
# subtract a bignum from a smallnum to produce a negstive smallnum
# (just over the boundary)
a=1
b=1152921504606846977
expected='-1152921504606846976'
output=`echo "(- $a $b)" | target/psse -v 2 2>psse.log`
actual=`echo $output |\
tail -1 |\
sed 's/\,//g'`
echo -n "$0 => subtracting $b from $a: "
if [ "${expected}" = "${actual}" ]
then
echo "OK"
else
echo "Fail: expected '${expected}', got '${actual}'"
result=`echo "${result} + 1" | bc`
fi
#####################################################################
# subtract a bignum from a bignum to produce a bignum
a=20000000000000000000
b=10000000000000000000
expected=10000000000000000000
output=`echo "(- $a $b)" | target/psse -v 2 2>psse.log`
actual=`echo $output |\
tail -1 |\
sed 's/\,//g'`
echo -n "$0 => subtracting $b from $a: "
if [ "${expected}" = "${actual}" ]
then
echo "OK"
else
echo "Fail: expected '${expected}', got '${actual}'"
result=`echo "${result} + 1" | bc`
fi
exit ${result}