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eighty_one?

Decimal
examples
false
input
-2.0.eighty_one?
result
false
negative_two_point_one_eighty_one
input
-2.1.eighty_one?
result
false
minus one point zero
input
-1.0.eighty_one?
result
false
minus one point one
input
-1.1.eighty_one?
result
false
minus zero point one
input
-0.1.eighty_one?
result
false
zero point zero
input
0.0.eighty_one?
result
false
minus zero point one
input
-0.1.eighty_one?
result
false
one point zero
input
1.0.eighty_one?
result
false
minus one point one eighty one
input
-1.1.eighty_one?
result
false
minus two point zero
input
-2.0.eighty_one?
result
false
two point one
input
2.1.eighty_one?
result
false
eighty one
input
81.0.eighty_one?
result
true
eighty one point one
input
81.1.eighty_one?
result
false