DO4                16 lib/zlib/adler32.c #define DO4(buf,i)  DO2(buf,i); DO2(buf,i+2);
DO4                71 source4/heimdal/lib/hcrypto/md5.c #define DO4(a,b,c,d,k,s,i) DOIT(a,b,c,d,k,s,i,I)