src/main/java/org/nustaq/serialization/coders/FSTStreamEncoder.java
public void _writeFIntArr(int v[], int off, int len) throws IOException {
        final int free = 5 * len;
        buffout.ensureFree(free);
        final byte[] buf = buffout.buf;
        int count = buffout.pos;
        for (int i = off; i < off+len; i++) {
            final int anInt = v[i];
            if ( anInt > -127 && anInt <=127 ) {
                buffout.buf[count++] = (byte)anInt;
            } else
            if ( anInt >= Short.MIN_VALUE && anInt <= Short.MAX_VALUE ) {
                buf[count++] = -128;
                buf[count++] = (byte) ((anInt >>>  0) & 0xFF);
                buf[count++] = (byte) ((anInt >>> 8) & 0xFF);
            } else {
                buf[count++] = -127;
                buf[count++] = (byte) ((anInt >>>  0) & 0xFF);
                buf[count++] = (byte) ((anInt >>>  8) & 0xFF);
                buf[count++] = (byte) ((anInt >>> 16) & 0xFF);
                buf[count++] = (byte) ((anInt >>> 24) & 0xFF);
            }
        }
        buffout.pos = count;
    }
public void _writeFIntArr(int v[], int off, int len) throws IOException {
        final int free = 5 * len;
        buffout.ensureFree(free);
        final byte[] buf = buffout.buf;
        int count = buffout.pos;
        for (int i = off; i < off+len; i++) {
            final int anInt = v[i];
            if ( anInt > -127 && anInt <=127 ) {
                buffout.buf[count++] = (byte)anInt;
            } else
            if ( anInt >= Short.MIN_VALUE && anInt <= Short.MAX_VALUE ) {
                buf[count++] = -128;
                buf[count++] = (byte) ((anInt >>>  0) & 0xFF);
                buf[count++] = (byte) ((anInt >>> 8) & 0xFF);
            } else {
                buf[count++] = -127;
                buf[count++] = (byte) ((anInt >>>  0) & 0xFF);
                buf[count++] = (byte) ((anInt >>>  8) & 0xFF);
                buf[count++] = (byte) ((anInt >>> 16) & 0xFF);
                buf[count++] = (byte) ((anInt >>> 24) & 0xFF);
            }
        }
        buffout.pos = count;
    }
compressed version