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Shaded version of DataStax Java Driver for Apache Cassandra
/*
* Copyright (C) 2008-2010 Wayne Meissner
*
* This file is part of the JNR project.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jnr.ffi.byref;
import jnr.ffi.Pointer;
import jnr.ffi.Runtime;
/**
*
*/
public final class FloatByReference extends AbstractNumberReference {
private static final Float DEFAULT = Float.valueOf(0f);
/**
* Creates a new reference to a short value initialized to zero.
*/
public FloatByReference() {
super(DEFAULT);
}
/**
* Creates a new reference to a float value
*
* @param value the initial native value
*/
public FloatByReference(Float value) {
super(checkNull(value));
}
/**
* Creates a new reference to a float value
*
* @param value the initial native value
*/
public FloatByReference(float value) {
super(value);
}
/**
* Copies the float value to native memory
*
* @param runtime the current runtime.
* @param buffer the native memory buffer.
* @param offset the memory offset.
*/
public void toNative(Runtime runtime, Pointer buffer, long offset) {
buffer.putFloat(offset, value);
}
/**
* Copies the float value from native memory
*
* @param runtime the current runtime.
* @param buffer the native memory buffer.
* @param offset the memory offset.
*/
public void fromNative(Runtime runtime, Pointer buffer, long offset) {
this.value = buffer.getFloat(offset);
}
/**
* Gets the native size of type of reference in bytes.
*
* @param runtime the current runtime.
* @return the size of a byte in bytes
*/
public final int nativeSize(Runtime runtime) {
return 4;
}
}
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