Package jnr.ffi.byref

Class DoubleByReference

java.lang.Object

java.lang.Number

jnr.ffi.byref.AbstractNumberReference<java.lang.Double>

jnr.ffi.byref.DoubleByReference

All Implemented Interfaces:

java.io.Serializable, ByReference<java.lang.Double>

public final class DoubleByReference
extends AbstractNumberReference<java.lang.Double>

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
DoubleByReference()	Creates a new reference to a double value initialized to zero.
DoubleByReference(double value)	Creates a new reference to a double value
DoubleByReference(java.lang.Double value)	Creates a new reference to a double value

Method Summary

Modifier and Type	Method	Description
void	fromNative(Runtime runtime, Pointer buffer, long offset)	Copies the double value from native memory
int	nativeSize(Runtime runtime)	Gets the native size of type of reference in bytes.
void	toNative(Runtime runtime, Pointer buffer, long offset)	Copies the double value to native memory

Methods inherited from class jnr.ffi.byref.AbstractNumberReference

byteValue, checkNull, doubleValue, floatValue, getValue, intValue, longValue, shortValue

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DoubleByReference

public DoubleByReference()

Creates a new reference to a double value initialized to zero.

DoubleByReference

public DoubleByReference(java.lang.Double value)

Creates a new reference to a double value

Parameters:

value - the initial native value

DoubleByReference

public DoubleByReference(double value)

Creates a new reference to a double value

Parameters:

value - the initial native value

Method Detail

toNative

public void toNative(Runtime runtime,
                     Pointer buffer,
                     long offset)

Copies the double value to native memory

Parameters:

runtime - the current runtime.

buffer - the native memory buffer.

offset - the memory offset.

fromNative

public void fromNative(Runtime runtime,
                       Pointer buffer,
                       long offset)

Copies the double value from native memory

Parameters:

runtime - the current runtime.

buffer - the native memory buffer.

offset - the memory offset.

nativeSize

public final int nativeSize(Runtime runtime)

Gets the native size of type of reference in bytes.

Parameters:

runtime - the current runtime.

Returns:

the size of a byte in bytes.