BINTOC(m.i,1)===CHR(m.i+128)

BINTOC(m.i,2)===CHR(m.i/256+128)+CHR(MOD(m.i,256))

BINTOC(m.i,4)===CHR(m.i/256^3+128)+CHR(MOD(m.i/256^2,256));
               +CHR(MOD(m.i/256,256))+CHR(MOD(m.i,256))