| 1 | package net.mattmccutchen.measurements; |
| 2 | |
| 3 | public class BitFlicking { |
| 4 | private BitFlicking() {} |
| 5 | |
| 6 | public static void storeLong(byte[] data, long val, int off) { |
| 7 | //System.err.println("Store long: " + val); |
| 8 | data[off ] = (byte)(val >> 56); |
| 9 | data[off+1] = (byte)(val >> 48); |
| 10 | data[off+2] = (byte)(val >> 40); |
| 11 | data[off+3] = (byte)(val >> 32); |
| 12 | data[off+4] = (byte)(val >> 24); |
| 13 | data[off+5] = (byte)(val >> 16); |
| 14 | data[off+6] = (byte)(val >> 8); |
| 15 | data[off+7] = (byte)(val ); |
| 16 | } |
| 17 | |
| 18 | public static void storeDouble(byte[] data, double val, int off) { |
| 19 | storeLong(data, Double.doubleToRawLongBits(val), off); |
| 20 | } |
| 21 | |
| 22 | public static long loadLong(byte[] data, int off) { |
| 23 | long val = |
| 24 | (((long)data[off ] & 0xFF) << 56) |
| 25 | | ((long)(data[off+1] & 0xFF) << 48) |
| 26 | | ((long)(data[off+2] & 0xFF) << 40) |
| 27 | | ((long)(data[off+3] & 0xFF) << 32) |
| 28 | | ((long)(data[off+4] & 0xFF) << 24) |
| 29 | | ((long)(data[off+5] & 0xFF) << 16) |
| 30 | | ((long)(data[off+6] & 0xFF) << 8) |
| 31 | | ( (data[off+7] & 0xFF) ); |
| 32 | //System.err.println("Load long: " + val); |
| 33 | return val; |
| 34 | } |
| 35 | |
| 36 | public static double loadDouble(byte[] data, int off) { |
| 37 | return Double.longBitsToDouble(loadLong(data, off)); |
| 38 | } |
| 39 | } |