Name
write4b —  fortran file binary write
Calling Sequence
write4b(file-name,a [,rec])
Parameters
- file-name
 
string or integer
 
- rec
 
vector of positive integers. the selected records for direct access. This vector size must be equal to the number of rows of a
 
Description
    writes in binary format the matrix a in the file
    'filename'. Matrix entries are  stored on 8 byte words
    For direct record access, file must have been previously opened using
    file function to set the record_length. file-name must be
    the result of the file function.