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Intel fortran-80 manual FORTRAN-80

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FORTRAN-80

Extensions To ANSI Fortran

Miscellaneous extensions:

Seven-dimensional arrays

Unsubscripted array names in DATA and EQUIVALENCE statements Optional commas in COMMON, DO, assigned GOTO, and computed GOTO

statements

Character constant in a PAUSE or STOP statement

BLOCK DATA subprogram names in EXTERNAL statement Integer expressions in a computed GOTO

Optional label in an assigned GOTO Integer expressions in a DO statement Asterisk in column 1 to identify a comment line

D-3

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Intel fortran-80 manual FORTRAN-80

Contents

FORTRAN-SO Programming Manual Prompt Preface Page Contents Chapter Programming Guidelines IllustrationsGlossary FORTRAN-SO Chapter Introduction to Fortran An Introductory ExampleComment Lines Output Statements Type StatementInput Statements Value Assignment StatementNonexecutable Statements Summary Of FORTRAN·SO StatementsProgram Termination Executable StatementsFormat Order of StatementsProgram Units and Procedures Chapter Fortran ConceptsFortran Program Structure Prog RAM Statement Statements and LinesProgram name = 8*C + D* *2/E Fortran Statement ElementsCharacter Set #Pol.1ndSignB52 Constants and VariablesArithmeticoverflow Error Murphyslaw Sl#d ...b Where+64101 #14010 #4567Q +#AF2CHSqdiag = Sqrt 2*S* *2 Sperim = 4*S Sqarea = S**2Relational Expressions OP1 NOT.OP1 True False False True If Numb .GT Stop If Pname .EO. Gehrigprint 20, PNAME, AVGEXP1 operator EXP2 EXP1 EXP2 operatorStop OP1 OP2 OP1 .NEQV. OP2 Precedence of Operators15/3 + 18/9 = 5 + 2 = 15/3 + 18/9 = 15/3 + 2 = 15/5 = Scope of SymbolsNotational Conventions Call sub arg,argCall ROUT1A, 3.72 Page Integer Type Statement Chapter Defining Variables ARRAYS, and MemoryType Statements Real Type StatementVa,luernustueiA, Qp4 Logical Type StatementLen Aryd* len Character * len, name ,nameCharacter TICTAC3,3 Logical ,3,3 Array DefinitionImplicit REALA-B, D-H, Character C Implicit Integer I-N, Logical O-lARRAY3,MI00LE,THIRD Dimension StatementLogical Table Integer Array Dimension ,3, ARRAY3,3,3 Kinds of Array DeclaratorsAry s ,s Dimension ,3Properties of Arrays Referencing Array ElementsARRAY2,6 = a Arrayi + J, 3 = ARRAYM,M + N,M-N = a + SQRT8 Assignment StatementsArithmetic Assignment Statement CHARACTER*10 NAMES4, MGR MGR = Stengel NAMES1 = Gehrig = expLogical FLAG, ,3 = charR*c Data StatementAssign stlTO name Assign 1010 to LOOP1 Goto LOOP1Equivalence Statement Data I,J,K/10,20,301Data Zeros 110*0/1,J,K 110,20,301 &NAMES2 Iotti Fpnumb Common StatementReal Fpnumb Array ListBlock Data Subprograms Block Data Statement Block Data nameZEROS/1 0 Computed GO to Statement Program Execution ControlsTransferring Program Oontrol Unconditional GO to StatementAssigned GO to Statement Arithmetic if StatementAssign 10TO Start Gotostart Assign 999 to Done If Done Pause If .NOT. Done GO to Start Logical if Statement6 IF, Else IF, and Else Blocks Done = a * *2 .GT **2Else if exp then Block if StatementElse if Statement If exp thenElse if Flag .EO then Write 6,40 Fedtax Else StatementEND if Statement If Flag .EO thenLoop Control Statements Operation of a do LoopDo Statement CHARACTER*12 Pname Program Termination StatementsContinue Statement ContinuePause BREAK12 Pause StatementStop Statement PauseChapter Functions and Subroutines Intrinsic and Statement FunctionsIntrinsic Functions Intrinsic Sqrt Intrinsic EXP, LOG, LOG10 Intri Nsic StatementStatement Functions Intrinsic tunc ,tunc156.8 Function Statement External ProceduresTotal = Total + Arrayk 100CONTINUE Return END SubroutinesFunction Subprogram Limitations Do 100 K = 1SU Brouti N E subdum,dum Subroutine StatementRetu RN Statement Program CALL.. SubroutineExternal proe ,proe Save StatementExternal Statement Save lebl ,IeblCall Statement Arguments And Common Blocks RevisitedCommon Blocks Dummy And Actual ArgumentsAssociation Of Arguments Agreement Of Argument Lengths Function FA,B,C FX, YPage File Properties Chapter INPUT/OUTPUTRecords, Files, And Units Record PropertiesExternal And Internal Files File ExistenceFile Name File PositionUnit Properties File Access1.2 1/0 Status Specifier File-Handling StatementsOpen Statement Unit SpecifierError Specifier File Name SpecifierFile Status Specifier Formatting Specifier Access Method SpecifierAccess = Sequential Access = SEQUENTIAL,FORM = FormattedBlank = blnk Open 3, FILE=CARDS,STATUS=NEW,ACCESS=DIREcrBlank Specifier Form = FORMATTED,RECL=80Close 3, IOSTAT= ERRFLG, ERR= Close StatementOpening a Connected Unit Close close-listBackspace Backspace StatementRewi N D Statement File Disposition SpecifierEndfile arg-list Data-Transfer 1/0 StatementsEndfile Statement Read StatementControl Information List Read 2 PNAME, AB, HitsFMT =f Read 2,25 PNAME, AS, Hits Read 25, Pnam E, AS, HitsAssign 25 to Infmt Read 2,INFMT Pname Input List Implied-DO ListWrite ctl-list out-list Print 120, PNAME, AVG Formatted And Unformatted Data TransferPrint Statement Unformatted Data TransferPrinting Formatted Records Formatted Data TransferStl Format flist Format StatementIs Ff OY1 Y2 Y1 Y2 Y3± Y1 Y2···Ye Z5editdesctiptor Either a sjgu ora letter indicatingthebas¢Write 7,100 Itstno Format Thisis the Test NUMBER,2X Write 7,100Format 1X, A12, 4X, F4.3 DollytSigfjl$ijitrrrg· Read 2,50 INTNUM, FpnumFormat A20, $ List·Directed FormattingList-Directed Input Paint 25, PnameList-Directed Output Page Program Documentation Problem DefinitionChapter Programming Guidelines Program DevelopmentRefining The Problem Definition Level OneLevel Two Write unit, 60 EMP, HRS, GRPAY, Netpay Format flist Otherwise Print Employee Data and Update Totals ElseFinal Coding Level ThreeCrossing Unit Lines Fortran CodingFunctions And Subroutines GO to StatementPI = ReferencesReminders = 2217*r* *2Programming Guidelines Appendix a FORTRAN-80 Statement Summary Statement SequenceStatement Summary ERR = stl Stat Iostat =Stname Status =Continue execution provides END FORTRAN-80 FORTRAN-80 FORTRAN-SO Iostat = Return Rewind Statement Subroutine Statement Category Executable Text Reference .2.2 Intrinsic Function Summary Appendix B Intrinsic FunctionsCategory Function Arguments Int-12.8 = Page Hollerith Constants In Data Statements Appendix C Hollerith Data TypeHollerith As a Data Type Hollerith ConstantAEditing Of Hollerith Data Hollerith Format SpecificationAppendix D Extensions to Ansi Fortran Standard Extensions To 1977 SubsetNonstandard Extensions To 1977 Fortran Differences From 1966 Fortran More Specific Semantics Than 1977 FortranFORTRAN-80 Page Ascii Codes Ascii CodesPage Appendix F 8080/8085 Processor Dependencies Processor Limitations On LanguageCompiler Extensions $REENTRANT Where the $must be in columnCall Input port, var Call Output port, exp Call INPUT1, TEST1 Call OUTPUT2$0077 Default Data LengthsInterpretation of do Statements Including Source FilesF1MYPROG UNIT4 LP, Unit 5 Fosysin Unit n = deviceIndex Block Data Function Subroutine Index Page Page Page Inter Postage will be paid by Addressee WED Like Your CommentsRequest for Readerscomments 111111 Page Inter