IOUT=1 and 2 are usually more
than half zeroes. This waste of words on the input file can be
reduced by using FIDO format in which a group of N zeroes is
replaced by one entry that says ``repeat zero N times''. TRANSX
uses fixed-field FIDO, which divides a 12-column field into a
3-column part and a 9-column field without a decimal or an E
(e.g., 1234567-6 is 1.234567). A negative number or a number with
a two-digit exponent field ends up with less precision. To obtain
the repeat option, ``nnR'' is put into the 3-column field where nn
is the number of times that the number in the field following R is
to be repeated. A table is terminated by an entry with T in column 3
of the 12-column field and every other column is blank.
The materials and scattering blocks are written in the same order
as for IOUT=1, and a header card is provided for each
block. The tables are much more compact but harder to read. Some FIDO
processors are much more elaborate than this one, but TRANSX
uses only the R and T options.
An example of FIDO output is here.
TRANSX HyperText Manual
TRANSX HyperText Help Package
T-2 Nuclear Information Service