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A fast and easy to use dense and sparse matrix linear algebra library written in Java.
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/*
* Copyright (c) 2022, Peter Abeles. All Rights Reserved.
*
* This file is part of Efficient Java Matrix Library (EJML).
*
* 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 org.ejml.data;
import org.ejml.ops.MatrixIO;
import javax.annotation.Generated;
/**
* Fixed sized vector with 4 elements. Can represent a 4 x 1 or 1 x 4 matrix, context dependent.
*
* DO NOT MODIFY. Automatically generated code created by GenerateMatrixFixedN
*
* @author Peter Abeles
*/
@Generated("org.ejml.data.GenerateMatrixFixedN")
public class FMatrix4 implements FMatrixFixed {
public float a1,a2,a3,a4;
public FMatrix4() {}
public FMatrix4( float a1, float a2, float a3, float a4 ) {
this.a1 = a1;
this.a2 = a2;
this.a3 = a3;
this.a4 = a4;
}
public FMatrix4( FMatrix4 o ) {
this.a1 = o.a1;
this.a2 = o.a2;
this.a3 = o.a3;
this.a4 = o.a4;
}
@Override public void zero() {
a1 = 0.0f;
a2 = 0.0f;
a3 = 0.0f;
a4 = 0.0f;
}
public void setTo( float a1, float a2, float a3, float a4 ) {
this.a1 = a1;
this.a2 = a2;
this.a3 = a3;
this.a4 = a4;
}
public void setTo( int offset , float[] array ) {
this.a1 = array[offset+0];
this.a2 = array[offset+1];
this.a3 = array[offset+2];
this.a4 = array[offset+3];
}
@Override public float get( int row, int col ) {return unsafe_get(row,col);}
@Override public float unsafe_get( int row, int col ) {
if (row != 0 && col != 0)
throw new IllegalArgumentException("Row or column must be zero since this is a vector");
int w = Math.max(row,col);
if (w == 0) {
return a1;
} else if (w == 1) {
return a2;
} else if (w == 2) {
return a3;
} else if (w == 3) {
return a4;
} else {
throw new IllegalArgumentException("Out of range. "+w);
}
}
@Override public void set( int row, int col, float val ) {
unsafe_set(row,col,val);
}
@Override public void unsafe_set( int row, int col, float val ) {
if (row != 0 && col != 0)
throw new IllegalArgumentException("Row or column must be zero since this is a vector");
int w = Math.max(row,col);
if (w == 0) {
a1 = val;
} else if (w == 1) {
a2 = val;
} else if (w == 2) {
a3 = val;
} else if (w == 3) {
a4 = val;
} else {
throw new IllegalArgumentException("Out of range. "+w);
}
}
@Override public void setTo( Matrix original ) {
FMatrix m = (FMatrix)original;
if (m.getNumCols() == 1 && m.getNumRows() == 4) {
a1 = m.get(0,0);
a2 = m.get(1,0);
a3 = m.get(2,0);
a4 = m.get(3,0);
} else if (m.getNumRows() == 1 && m.getNumCols() == 4) {
a1 = m.get(0,0);
a2 = m.get(0,1);
a3 = m.get(0,2);
a4 = m.get(0,3);
} else {
throw new IllegalArgumentException("Incompatible shape");
}
}
@Override public int getNumRows() {return 4;}
@Override public int getNumCols() {return 1;}
@Override public int getNumElements() {return 4;}
@Override public T copy() {
return (T)new FMatrix4(this);
}
@Override public void print() {
MatrixIO.printFancy(System.out, this, MatrixIO.DEFAULT_LENGTH);
}
@Override public void print( String format ) {
MatrixIO.print(System.out, this, format);
}
@Override public T createLike() {return (T)new FMatrix4();}
@Override public MatrixType getType() {return MatrixType.UNSPECIFIED;}
}