16/s//YOUR_UINT16_NAME/g
        /l_int16/s//YOUR_INT16_NAME/g
        /l_uint32/s//YOUR_UINT32_NAME/g
        /l_int32/s//YOUR_INT32_NAME/g
        /l_float32/s//YOUR_FLOAT32_NAME/g
        /l_float64/s//YOUR_FLOAT64_NAME/g
    (2) in the src and prog directories:
       - if you have a version of sed that does in-place conversion:
            sed -i -f converttypes.sed *
       - else, do something like (in csh)
           foreach file (*)
           sed -f converttypes.sed $file > tempdir/$file
         