Fortran

This repsoitory contains simple programs written as I learn FORTRAN.

Contents

Programs

name	description	command tested	file dependencies	files output
hello.f	hello world	write sleep
fundem.f	fundamental	read function
ar.f	array	subroutine	f.f f2.f
global.f	global variable	include	araydim.inc
sys.f	system	system
subs.f	subroutines	call	f.f f2.f
globsubs.f	global variable subroutine	include call	araydim.inc
test_abs.f	absolute value	abs real
sign.f	sign control	ss sp
io.f	input/output	inquire open		svp.out
timedate.f	date and time	date_and_time
pause.f	pause	pause
test_system_clock.f	system clock	system_clock	format.f set_format.f
make_svp.f	make svp	system_clock srand rand		svp.in
collatz.f	Collatz sequence		format.f set_format.f
collatz_loop.f	Collatz delay records		format.f set_format.f	collatz.txt
collatz_glide.f	Collatz glide calculation		format.f set_format.f
huge.f	largest integer	kind huge	format.f set_format.f
interrupt.f	catch interrupt signal	common signal		state
extrema.f	extrema	huge tiny
getunit_test.f	newunit replacement	inquire	getunit.f
fmt.f	comma format		format.f set_format.f
timer.f	timer	system_clock common signal	set_format.f
units.f	unit conversions	selected_real_kind
basel.f	basel problem
ask.f	read to logical	index

Subroutines

name	description	command tested	file dependencies
f2.f		dimension
f.f		dimension
format.f	format numerical input to string

Functions

name	description
getunit.f	newunit replacement

Includes

name	description
araydim.inc	array dimension
set_format.f	set integer size and display precision

Installation

Prerequisites

Requies a compiler for Fortran, such as GNU Fortran. Use the following commands to install GFortran, etc, on Linux.

sudo apt update && sudo apt -y upgrade
sudo apt -y install git
sudo apt -y install make
sudo apt -y install gfortran

These commands have been collected in the script install_packages.sh.

Cloning

Check out the folder from the repository with one of the following commands.

svn co https://github.com/jonlighthall/fortran.git/trunk/ ./fortran (SVN)

git clone https://github.com/jonlighthall/fortran (Git HTTPS)

git clone [email protected]:jonlighthall/fortran.git (Git SSH)

Compiling

Compile the source files and create executables with commands such as the following.

gfortran -o hello.exe hello.f

Alternatively, these commands can be executed by using the make command.

Execution

The compiled executables can be run using commands such as the following.

./hello.exe

Groups of executeables can be run in sequnece with the following commands.

make run to run programs which do not require user input.

make run_man to run programs which require user input.

make run_int to run programs which require an interrupt signal to terminate.