Package it.unimi.dsi.fastutil.doubles
Interface DoubleUnaryOperator
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- All Superinterfaces:
java.util.function.DoubleUnaryOperator
,java.util.function.Function<java.lang.Double,java.lang.Double>
,java.util.function.UnaryOperator<java.lang.Double>
- Functional Interface:
- This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface public interface DoubleUnaryOperator extends java.util.function.UnaryOperator<java.lang.Double>, java.util.function.DoubleUnaryOperator
A type-specificUnaryOperator
; provides methods operating both on objects and on primitives.- Since:
- 8.5.0
- See Also:
UnaryOperator
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Method Summary
All Methods Static Methods Instance Methods Abstract Methods Default Methods Deprecated Methods Modifier and Type Method Description double
apply(double x)
Computes the operator on the given input.default java.lang.Double
apply(java.lang.Double x)
Deprecated.Please use the corresponding type-specific method instead.default double
applyAsDouble(double x)
Deprecated.Please useapply(double)
.static DoubleUnaryOperator
identity()
Returns aUnaryOperator
that always returns the input unmodified.static DoubleUnaryOperator
negation()
Returns aUnaryOperator
that always returns the arithmetic negation of the input.
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Method Detail
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apply
double apply(double x)
Computes the operator on the given input.- Parameters:
x
- the input.- Returns:
- the output of the operator on the given input.
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identity
static DoubleUnaryOperator identity()
Returns aUnaryOperator
that always returns the input unmodified.- See Also:
UnaryOperator.identity()
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negation
static DoubleUnaryOperator negation()
Returns aUnaryOperator
that always returns the arithmetic negation of the input.- Implementation Notes:
- As with all negation, be wary of unexpected behavior near the minimum value of the data type.
For example, -
Integer.MIN_VALUE
will result inInteger.MIN_VALUE
(still negative), as the positive value ofInteger.MIN_VALUE
is too big forint
(it would be 1 greater thenInteger.MAX_VALUE
).
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applyAsDouble
@Deprecated default double applyAsDouble(double x)
Deprecated.Please useapply(double)
.- Specified by:
applyAsDouble
in interfacejava.util.function.DoubleUnaryOperator
- Implementation Specification:
- This default implementation delegates to
apply(double)
.
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apply
@Deprecated default java.lang.Double apply(java.lang.Double x)
Deprecated.Please use the corresponding type-specific method instead.- Specified by:
apply
in interfacejava.util.function.Function<java.lang.Double,java.lang.Double>
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