999499 -
999500 +
999501 ++
1000000
1049999 -
1050000 +

.000999499999 -
.0009995 +
.001

999.49 -
999.50 +
1000
1049 -
1050 +
9999

.999 -
.9994999 -
.9995 +
1.0
1
1.000001