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class Htonl{
public static void main(String args[]){
if(args.length<1){
System.out.println("Usage : java Htonl");
System.exit(0);
}
int value=Integer.parseInt(args[0]);
int newValue=swap(value);
System.out.println("big endian value : 0x" + Integer.toHexString(value));
System.out.println("little endian value : 0x" + Integer.toHexString(newValue));
}
/*
* Swapping byte orders of given numeric types
*/
static short swap(short x){
return (short)((x << 8) | ((x >> 8) & 0xff));
}
static char swap(char x){
return (char)((x << 8) | ((x >> 8) & 0xff));
}
static int swap(int x){
return (int)((swap((short)x) << 16) | (swap((short)(x >> 16)) & 0xffff));
}
static long swap(long x){
return (long)(((long)swap((int)(x)) << 32) | ((long)swap((int)(x >> 32)) & 0xffffffffL));
}
static float swap(float x){
return Float.intBitsToFloat(swap(Float.floatToRawIntBits(x)));
}
static double swap(double x){
return Double.longBitsToDouble(swap(Double.doubleToRawLongBits(x)));
}
} |
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