-/*******************************************************************************\r
- * Copyright (c) 2007- VTT Technical Research Centre of Finland.\r
- * All rights reserved. This program and the accompanying materials\r
- * are made available under the terms of the Eclipse Public License v1.0\r
- * which accompanies this distribution, and is available at\r
- * http://www.eclipse.org/legal/epl-v10.html\r
- *\r
- * Contributors:\r
- * VTT Technical Research Centre of Finland - initial API and implementation\r
- *******************************************************************************/\r
-/*\r
- * Created on Jan 21, 2005\r
- * \r
- * Copyright Toni Kalajainen\r
- * \r
- * Licensed under the Apache License, Version 2.0 (the "License");\r
- * you may not use this file except in compliance with the License.\r
- * You may obtain a copy of the License at\r
- *\r
- * http://www.apache.org/licenses/LICENSE-2.0\r
- *\r
- * Unless required by applicable law or agreed to in writing, software\r
- * distributed under the License is distributed on an "AS IS" BASIS,\r
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
- * See the License for the specific language governing permissions and\r
- * limitations under the License.\r
- */\r
-package org.simantics.utils.bytes;\r
-\r
-/**\r
- * Big Endian float <-> byte array conversions\r
- * Motorola order, Network order\r
- *\r
- * @author Toni Kalajainen\r
- */\r
-public class BEFloat {\r
- \r
- /**\r
- * Convert float to byte array\r
- * @param l float value\r
- * @return byte array\r
- */\r
- public static byte[] toBytes(float value)\r
- {\r
- byte array[] = new byte[4];\r
- int l = Float.floatToIntBits(value);\r
- array[0] = (byte) (l & 0xff);\r
- array[1] = (byte) ((l >> 8) & 0xff);\r
- array[2] = (byte) ((l >> 16) & 0xff);\r
- array[3] = (byte) ((l >> 24) & 0xff);\r
- return array;\r
- }\r
- \r
- /**\r
- * Write float value to byte array\r
- * @param value the float value\r
- * @param array the byte array\r
- * @param offset the offset\r
- */\r
- public static void write(float value, byte array[], int offset)\r
- {\r
- if (offset+4>array.length)\r
- throw new IndexOutOfBoundsException(); \r
- int l = Float.floatToIntBits(value);\r
- array[0 + offset] = (byte) (l & 0xff);\r
- array[1 + offset] = (byte) (l >> 8);\r
- array[2 + offset] = (byte) (l >> 16);\r
- array[3 + offset] = (byte) (l >> 24);\r
- }\r
- \r
- /**\r
- * Write float value to byte array\r
- * @param value the float value\r
- * @param array the byte array\r
- * @param offset the offset\r
- */\r
- public static void write(float value, byte array[])\r
- {\r
- if (array.length<4)\r
- throw new IndexOutOfBoundsException(); \r
- int l = Float.floatToIntBits(value);\r
- array[0] = (byte) (l & 0xff);\r
- array[1] = (byte) (l >> 8);\r
- array[2] = (byte) (l >> 16);\r
- array[3] = (byte) (l >> 24);\r
- } \r
- \r
- /**\r
- * read float value from byte array\r
- * @param array the array\r
- * @param offset offset\r
- * @return the value\r
- */\r
- public static float toFloat(byte array[], int offset)\r
- {\r
- if (offset+4>array.length)\r
- throw new IndexOutOfBoundsException(); \r
- return \r
- Float.intBitsToFloat(\r
- ( ((int) array[0 + offset] & 0xFF) ) |\r
- ( ((int) array[1 + offset] & 0xFF) << 8) |\r
- ( ((int) array[2 + offset] & 0xFF) << 16) | \r
- ( ((int) array[3 + offset] & 0xFF) << 24)); \r
- }\r
- \r
- /**\r
- * read float value from byte array\r
- * @param array the array\r
- * @return the value\r
- */\r
- public static float toFloat(byte array[])\r
- {\r
- if (4>array.length)\r
- throw new IndexOutOfBoundsException(); \r
-\r
- return \r
- Float.intBitsToFloat(\r
- ( ((int) array[0] & 0xFF) ) |\r
- ( ((int) array[1] & 0xFF) << 8) |\r
- ( ((int) array[2] & 0xFF) << 16) | \r
- ( ((int) array[3] & 0xFF) << 24)); \r
- }\r
-\r
- /**\r
- * Test cases\r
- * @param args\r
- */\r
- public static void main(String[] args) {\r
- System.out.println("min="+Float.MIN_VALUE+" max="+Float.MAX_VALUE);\r
- float value = -123.123123123f;\r
- byte array[] = toBytes(value);\r
- System.out.print(value);\r
- System.out.print(" = ");\r
- printByteArray(array);\r
- System.out.println();\r
- \r
- write(value, array, 0);\r
- System.out.print(value);\r
- System.out.print(" = ");\r
- printByteArray(array);\r
- System.out.println();\r
- \r
- write(value, array);\r
- System.out.print(value);\r
- System.out.print(" = ");\r
- printByteArray(array);\r
- System.out.println();\r
- \r
- value = toFloat(array, 0);\r
- printByteArray(array);\r
- System.out.print(" = ");\r
- System.out.print(value);\r
- System.out.println();\r
- \r
- value = toFloat(array);\r
- printByteArray(array);\r
- System.out.print(" = ");\r
- System.out.print(value);\r
- System.out.println();\r
- \r
- }\r
- \r
- public static void printByteArray(byte array[]) {\r
- for (int i=0; i<array.length; i++) {\r
- System.out.print(array[i] & 0xff);\r
- if (i<array.length-1) \r
- System.out.print(",");\r
- }\r
- }\r
-}\r
+/*******************************************************************************
+ * Copyright (c) 2007- VTT Technical Research Centre of Finland.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+/*
+ * Created on Jan 21, 2005
+ *
+ * Copyright Toni Kalajainen
+ *
+ * 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.simantics.utils.bytes;
+
+/**
+ * Big Endian float <-> byte array conversions
+ * Motorola order, Network order
+ *
+ * @author Toni Kalajainen
+ */
+public class BEFloat {
+
+ /**
+ * Convert float to byte array
+ * @param l float value
+ * @return byte array
+ */
+ public static byte[] toBytes(float value)
+ {
+ byte array[] = new byte[4];
+ int l = Float.floatToIntBits(value);
+ array[0] = (byte) (l & 0xff);
+ array[1] = (byte) ((l >> 8) & 0xff);
+ array[2] = (byte) ((l >> 16) & 0xff);
+ array[3] = (byte) ((l >> 24) & 0xff);
+ return array;
+ }
+
+ /**
+ * Write float value to byte array
+ * @param value the float value
+ * @param array the byte array
+ * @param offset the offset
+ */
+ public static void write(float value, byte array[], int offset)
+ {
+ if (offset+4>array.length)
+ throw new IndexOutOfBoundsException();
+ int l = Float.floatToIntBits(value);
+ array[0 + offset] = (byte) (l & 0xff);
+ array[1 + offset] = (byte) (l >> 8);
+ array[2 + offset] = (byte) (l >> 16);
+ array[3 + offset] = (byte) (l >> 24);
+ }
+
+ /**
+ * Write float value to byte array
+ * @param value the float value
+ * @param array the byte array
+ * @param offset the offset
+ */
+ public static void write(float value, byte array[])
+ {
+ if (array.length<4)
+ throw new IndexOutOfBoundsException();
+ int l = Float.floatToIntBits(value);
+ array[0] = (byte) (l & 0xff);
+ array[1] = (byte) (l >> 8);
+ array[2] = (byte) (l >> 16);
+ array[3] = (byte) (l >> 24);
+ }
+
+ /**
+ * read float value from byte array
+ * @param array the array
+ * @param offset offset
+ * @return the value
+ */
+ public static float toFloat(byte array[], int offset)
+ {
+ if (offset+4>array.length)
+ throw new IndexOutOfBoundsException();
+ return
+ Float.intBitsToFloat(
+ ( ((int) array[0 + offset] & 0xFF) ) |
+ ( ((int) array[1 + offset] & 0xFF) << 8) |
+ ( ((int) array[2 + offset] & 0xFF) << 16) |
+ ( ((int) array[3 + offset] & 0xFF) << 24));
+ }
+
+ /**
+ * read float value from byte array
+ * @param array the array
+ * @return the value
+ */
+ public static float toFloat(byte array[])
+ {
+ if (4>array.length)
+ throw new IndexOutOfBoundsException();
+
+ return
+ Float.intBitsToFloat(
+ ( ((int) array[0] & 0xFF) ) |
+ ( ((int) array[1] & 0xFF) << 8) |
+ ( ((int) array[2] & 0xFF) << 16) |
+ ( ((int) array[3] & 0xFF) << 24));
+ }
+
+ /**
+ * Test cases
+ * @param args
+ */
+ public static void main(String[] args) {
+ System.out.println("min="+Float.MIN_VALUE+" max="+Float.MAX_VALUE);
+ float value = -123.123123123f;
+ byte array[] = toBytes(value);
+ System.out.print(value);
+ System.out.print(" = ");
+ printByteArray(array);
+ System.out.println();
+
+ write(value, array, 0);
+ System.out.print(value);
+ System.out.print(" = ");
+ printByteArray(array);
+ System.out.println();
+
+ write(value, array);
+ System.out.print(value);
+ System.out.print(" = ");
+ printByteArray(array);
+ System.out.println();
+
+ value = toFloat(array, 0);
+ printByteArray(array);
+ System.out.print(" = ");
+ System.out.print(value);
+ System.out.println();
+
+ value = toFloat(array);
+ printByteArray(array);
+ System.out.print(" = ");
+ System.out.print(value);
+ System.out.println();
+
+ }
+
+ public static void printByteArray(byte array[]) {
+ for (int i=0; i<array.length; i++) {
+ System.out.print(array[i] & 0xff);
+ if (i<array.length-1)
+ System.out.print(",");
+ }
+ }
+}
Code Review / simantics / platform.git / blobdiff