Essentials of Fortran-90/95/2003
Contents

Math 60 -- D. C. Smolarski, S.J.
Santa Clara University, Department of Mathematics and Computer Science

1. Background and Introduction

• 1.1 History
• 1.2 Arranging Program Code
• 1.3 Free Source Form
• 1.4 Fixed Source Form
• 1.5 PROGRAM Header Statement and Program Skeleton
• 1.6 The STOP Statement
• 1.7 Sample Program: Free Source Form
• 1.8 Sample Program: Fixed Source Form
• 1.9 Good, Bad, and Differences

2. Variables, Constants, Arithmetic Operations, and Assignment Statements

• 2.1 Variable Identifier Length
• 2.2 Data Types, Default Typing, Declarations
• 2.3 Type Attributes, Parameters (Constants)
• 2.4 Initializations in Declaration Statements
• 2.5 IMPLICIT Type Statement
• 2.6 IMPLICIT NONE Statement
• 2.7 Constants
• 2.8 Arithmetic Operations
• 2.9 Note on Division
• 2.10 Assignment Statements
• 2.11 Type Conversion

3. Introduction to Input/Output

• 3.1 Overview
• 3.2 Input/Output Commands
• 3.3 'Format-Free' Input and Output
• 3.4 FORMAT Statements
• 3.5 Basic Field Descriptors
• 3.6 Brief Examples
• 3.7 Carriage Control
• 3.8 Examples
• 3.9 Specifying FORMAT in Input/Output
• 3.10 Repetition Factors
• 3.11 Checking for the End of the Input File
• 3.12 OPEN, CLOSE and INQUIRE Statements

4. More on Formats

• 4.1 Additional Format Field Descriptors
• 4.2 Multiple Repetitions
• 4.3 Input Format
• 4.4 Input Format Example
• 4.5 Formats: Underuse and the Colon Field Separator
• 4.6 Formats: Overuse
• 4.7 'Format Free' Input and Output
• 4.8 Other Input and Output Commands

5. Logical Expressions and Simple Decisions

• 5.1 Logical Expressions and Operators
• 5.2 Simple Choice: IF Statement
• 5.3 One Line IF
• 5.4 What Happens If ... ?

6. DO-Loops: Counted and Conditional

• 6.1 Fortran 90/95/2003 DO Loop
• 6.2 Loop Operation
• 6.3 Short Example, Labeling Loops
• 6.4 CONTINUE Statement
• 6.5 FORTRAN 77 DO Loop
• 6.6 Historical Changes in the DO Loop
• 6.7 Example
• 6.8 Warning
• 6.9 Nested DO Loops
• 6.10 Example: Complete Fortran Programs
• 6.11 Other Fortran-90/95/2003 Loops
• 6.12 Loops and Detecting End of Input Files

7. Intrinsic Functions

• 7.1 Overview
• 7.2 Table of More Commonly-Used Intrinsic Functions
• 7.3 Examples

8. Arrays

• 8.1 Overview
• 8.2 Declaring One Dimension Arrays
• 8.3 Accessing Array Elements
• 8.4 Sample Program Segment
• 8.5 Warning: Misleading Error Messages
• 8.6 Higher Dimensional Arrays
• 8.7 Storage of Multi-Dimensional Arrays
• 8.8 One-Dimension Arrays and Input and Output
• 8.9 Multi-Dimensional Arrays and Input and Output
• 8.10 Overuse of Formats With Arrays
• 8.11 Using Arrays in Fortran 90/95
• 8.12 The WHERE Construct
• 8.13 New Array Functions
• 8.14 Allocatable Arrays
• 8.15 Additional Features

9. Modules and Interfaces

• 9.1 Overview of Modules
• 9.2 Simple Example
• 9.3 Common Uses
• 9.4 Public and Private Attributes
• 9.5 Additional Features
• 9.6 Overview of Interfaces

10. Subprograms

• 10.1 Overview
• 10.2 Subroutines
• 10.3 Location of Subprogram Code
• 10.4 Subroutine Example
• 10.5 Arrays As Parameters
• 10.6 Fortran User-Defined Functions
• 10.7 Parameter Passing in Fortran
• 10.8 One Statement FUNCTIONS
• 10.9 Functions as Arguments; External and Intrinsic Statements
• 10.10 Multiple Entry Points
• 10.11 SAVE Statement

11. Recursive Subprograms

• 11.1 Recursion
• 11.2 Recursive Subroutines
• 11.3 Recursive Functions

12. Additional Features for Subprograms

• 12.1 Argument "Intent"
• 12.2 Optional and Labeled Arguments
• 12.3 Generic Subprograms

13. Character Variables

• 13.1 Declaring Character Variables
• 13.2 Assignments
• 13.3 Input/Output
• 13.4 Assignments of Different Length
• 13.5 Concatenation Operator
• 13.6 Other Character Operations: Functions for Character Data
• 13.7 Comparing Character Data
• 13.8 Substrings

14. Extended Precision and Complex Data Types

• 14.1 Double Precision Variables and Constants
• 14.2 Complex Variables and Constants
• 14.3 Conversion Functions
• 14.4 Extended Numeric Precision and KIND

15. Derived Types (Record Variables)

• 15.1 Overview
• 15.2 Defining a Derived Type
• 15.3 Declaring Variables of a Derived Type
• 15.4 Accessing Components of Derived Type Variable
• 15.5 Using Modules for Type Definition
• 15.6 Modules and Data Encapsulation

16. Miscellaneous Structures and Features

• 16.1 Select
• 16.2 Example
• 16.3 Interfaces and Operator Definition
• 16.4 Interfaces and Assignment Definition

17. Pointers

• 17.1 Fortran-90/95/2003 Pointers
• 17.2 Declaring Simple Pointer Variables
• 17.3 Assignment of Pointer Variables
• 17.4 Using Pointer Variables for Linked Structures
• 17.5 Sample Program for Linked List
• 17.6 Cautions for Passing Pointer Variables to Subprograms
• 17.7 Sample Code: using CONTAINS
• 17.8 Sample Code: using an INTERFACE Block
• 17.9 Pointers and Matrices
• 17.10 Caution

18. Archaic Statements

• 18.1 Overview
• 18.2 GO TOs
• 18.3 Arithmetic IF
• 18.4 Two Value Logical IF
• 18.5 DATA Statements
• 18.6 COMMON
• 18.7 Block DATA Subprograms
• 18.8 EQUIVALENCE
• 18.9 PARAMETER Statements
• 18.10 DIMENSION Statements
• 18.11 Order of Specification Statements

19. Miscellaneous

• 19.1 Obsolescent Features
• 19.2 New Fortran-95 Features
• 19.3 New Fortran-2003 Features
• 19.4 HPF

Index

This page is maintained by Dennis C. Smolarski, S.J. dsmolarski@math.scu.edu
© Copyright 1999-2005 Dennis C. Smolarski, SJ, All rights reserved.
Last changed: 29 June 2005.