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jnr.ffi.byref

public final Class DoubleByReference

extends AbstractNumberReference<Double>
Class Inheritance
Imports
jnr.ffi.Pointer, .Runtime

Field Summary

Modifier and TypeField and Description
private static final Double
DEFAULT

Inherited from jnr.ffi.byref.AbstractNumberReference:
value

Constructor Summary

AccessConstructor and Description
public
DoubleByReference()

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

public
DoubleByReference(Double
the initial native value
value)

Creates a new reference to a double value

public
DoubleByReference(double
the initial native value
value)

Creates a new reference to a double value

Method Summary

Modifier and TypeMethod and Description
public void
fromNative(Runtime
the current runtime.
runtime, Pointer
the native memory buffer.
buffer, long
the memory offset.
offset)

Implements jnr.ffi.byref.ByReference.fromNative.

Copies the double value from native memory
public final int

Returns:

the size of a byte in bytes.
nativeSize(Runtime
the current runtime.
runtime)

Implements jnr.ffi.byref.ByReference.nativeSize.

Gets the native size of type of reference in bytes.
public void
toNative(Runtime
the current runtime.
runtime, Pointer
the native memory buffer.
buffer, long
the memory offset.
offset)

Implements jnr.ffi.byref.ByReference.toNative.

Copies the double value to native memory
Inherited from jnr.ffi.byref.AbstractNumberReference:
byteValuecheckNulldoubleValuefloatValuegetValueintValuelongValueshortValue

Field Detail

DEFAULTback to summary
private static final Double DEFAULT

Constructor Detail

DoubleByReferenceback to summary
public DoubleByReference()

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

DoubleByReferenceback to summary
public DoubleByReference(Double value)

Creates a new reference to a double value

Parameters
value:Double

the initial native value

DoubleByReferenceback to summary
public DoubleByReference(double value)

Creates a new reference to a double value

Parameters
value:double

the initial native value

Method Detail

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

Implements jnr.ffi.byref.ByReference.fromNative.

Copies the double value from native memory

Parameters
runtime:Runtime

the current runtime.

buffer:Pointer

the native memory buffer.

offset:long

the memory offset.

nativeSizeback to summary
public final int nativeSize(Runtime runtime)

Implements jnr.ffi.byref.ByReference.nativeSize.

Gets the native size of type of reference in bytes.

Parameters
runtime:Runtime

the current runtime.

Returns:int

the size of a byte in bytes.

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

Implements jnr.ffi.byref.ByReference.toNative.

Copies the double value to native memory

Parameters
runtime:Runtime

the current runtime.

buffer:Pointer

the native memory buffer.

offset:long

the memory offset.