Java Reference
In-Depth Information
The value for +
.
public final static float NEGATIVE_INFINITY
The value for -
.
public final static float NaN
Not-a-Number. This constant gives you a way to get a NaN
value, not to test one. Surprising as it may be, NaN== NaN is al-
ways false because a NaN value, not being a number, is equal
to no value, not even itself. To test whether a number is NaN,
you must use the isNaN method.
public static boolean isNaN(float val)
Returns true if val is a Not-a-Number (NaN) value.
public static boolean isInfinite(float val)
Returns true if val is either positive or negative infinity.
public boolean isNaN()
Returns true if this object's value is a Not-a-Number (NaN)
value.
public boolean isInfinite()
Returns true if this object's value is either positive or negative
infinity.
In addition to the usual constructor forms, Float has a constructor that
takes a double argument to use as its initial value after conversion to
float .
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