busybox/testsuite/expr/expr-big

# busybox expr

# 3*1000*1000*1000 overflows 32-bit signed int
res=`busybox expr 0 '<' 3000000000`
[ x"$res" = x1 ] || exit 1

# 9223372036854775807 = 2^31-1
res=`busybox expr 0 '<' 9223372036854775807`
[ x"$res" = x1 ] || exit 1
# coreutils fails this one!
res=`busybox expr -9223372036854775800 '<' 9223372036854775807`
[ x"$res" = x1 ] || exit 1

# This one works only by chance
# res=`busybox expr 0 '<' 9223372036854775808`
# [ x"$res" = x1 ] || exit 1
expr: fix comparisons 'a < b' where we were overflowing a-b (not to mention that we used int, not arith_t). closes bug 2744. Also, shrink a bit and add testsuite entry function old new delta nextarg 75 84 +9 tostring 38 35 -3 toarith 89 86 -3 str_value 35 32 -3 eval6 555 552 -3 int_value 29 23 -6 eval4 128 120 -8 eval3 112 104 -8 eval2 512 417 -95 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/8 up/down: 9/-129) Total: -120 bytes 2008-04-03 01:54:09 +05:30			`# busybox expr`

			`# 310001000*1000 overflows 32-bit signed int`
			res=`busybox expr 0 '<' 3000000000`
			`[ x"$res" = x1 ] \|\| exit 1`

			`# 9223372036854775807 = 2^31-1`
			res=`busybox expr 0 '<' 9223372036854775807`
			`[ x"$res" = x1 ] \|\| exit 1`
			`# coreutils fails this one!`
			res=`busybox expr -9223372036854775800 '<' 9223372036854775807`
			`[ x"$res" = x1 ] \|\| exit 1`

			`# This one works only by chance`
			# res=`busybox expr 0 '<' 9223372036854775808`
			`# [ x"$res" = x1 ] \|\| exit 1`