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|
#!/bin/sh
# tests if mawk has been compiled to correctly handle
# floating point exceptions
#
# $Log: fpe_test,v $
# Revision 1.3 1995/08/29 14:17:18 mike
# exit 2 changes
#
# Revision 1.2 1994/12/18 18:51:55 mike
# recognize NAN printed as ? for hpux
#
PATH=.:$PATH
test1='BEGIN{ print 4/0 }'
test2='BEGIN {
x = 100
do { y = x ; x *= 1000 } while ( y != x )
print "loop terminated"
}'
test3='BEGIN{ print log(-8) }'
echo "testing division by zero"
echo mawk "$test1"
mawk "$test1"
ret1=$?
echo
echo "testing overflow"
echo mawk "$test2"
mawk "$test2"
ret2=$?
echo
echo "testing domain error"
echo mawk "$test3"
mawk "$test3" > temp$$
ret3=$?
cat temp$$
echo
# the returns should all be zero or all 2
# core dumps not allowed
trap '
echo compilation defines for floating point are incorrect
rm -f temp$$
exit 1' 0
echo
echo ==============================
echo return1 = $ret1
echo return2 = $ret2
echo return3 = $ret3
[ $ret1 -gt 128 ] && { echo test1 failed ; exception=1 ; }
[ $ret2 -gt 128 ] && { echo test2 failed ; exception=1 ; }
[ $ret3 -gt 128 ] && { echo test3 failed ; exception=1 ; }
[ "$exception" = 1 ] && { rm -f core temp$$ ; exit 1 ; }
same=0
[ $ret1 = $ret2 ] && [ $ret2 = $ret3 ] && same=1
if [ $same = 1 ]
then
if [ $ret1 = 0 ]
then
echo results consistent: ignoring floating exceptions
# some versions of hpux print NAN as ?
if egrep '[nN][aA][nN]|\?' temp$$ > /dev/null
then :
else
echo "but the library is not IEEE754 compatible"
echo "test 3 failed"
exit 1
fi
else echo results consistent: trapping floating exceptions
fi
trap 0
rm -f temp$$
exit 0
else
echo results are not consistent
echo 'return values should all be 0 if ignoring FPEs (e.g. with IEEE754)
or all 2 if trapping FPEs'
exit 1
fi
|
