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object Test extends App {
def d1: Double = 0.0
def d2: Double = -0.0
def d3: Double = Double.NaN
def d4: Double = Double.NaN
assert(d1 == d2)
assert(d3 != d4)
def d1B: java.lang.Double = d1
def d2B: java.lang.Double = d2
def d3B: java.lang.Double = d3
def d4B: java.lang.Double = d4
assert(d1B == d2B)
assert(d1 == d1B)
assert(d1B == d1)
assert(d3B != d4B)
assert(d3 != d4B)
assert(d3B != d4)
assert(!d1B.equals(d2B)) // ! see javadoc
assert( d3B.equals(d4B)) // ! see javadoc
def d1A: Any = d1
def d2A: Any = d2
def d3A: Any = d3
def d4A: Any = d4
assert(d1A == d2A)
assert(d1 == d1A)
assert(d1A == d1)
assert(d1B == d1A)
assert(d1A == d1B)
assert(d3A != d4A)
assert(d3 != d4A)
assert(d3A != d4)
assert(d3B != d4A)
assert(d3A != d4B)
def f1: Float = 0.0f
def f2: Float = -0.0f
def f3: Float = Float.NaN
def f4: Float = Float.NaN
assert(f1 == f2)
assert(f3 != f4)
def f1B: java.lang.Float = f1
def f2B: java.lang.Float = f2
def f3B: java.lang.Float = f3
def f4B: java.lang.Float = f4
assert(f1B == f2B)
assert(f1 == f1B)
assert(f1B == f1)
assert(f3B != f4B)
assert(f3 != f4B)
assert(f3B != f4)
assert(!f1B.equals(f2B)) // ! see javadoc
assert( f3B.equals(f4B)) // ! see javadoc
def f1A: Any = f1
def f2A: Any = f2
def f3A: Any = f3
def f4A: Any = f4
assert(f1A == f2A)
assert(f1 == f1A)
assert(f1A == f1)
assert(f1B == f1A)
assert(f1A == f1B)
assert(f3A != f4A)
assert(f3 != f4A)
assert(f3A != f4)
assert(f3B != f4A)
assert(f3A != f4B)
}
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