write4b

Arguments

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.

See Also

• file — file management
• readb — fortran file binary read
• write — write in a formatted file
• mput — writes byte or word in a given binary format
• read4b — fortran file binary read