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• The value may be constants as are allowed for list directed input, or they may be alist of constants separated by commas (,). A list of items is used to assign consecutivevalues to consecutive elements of an array.• Spaces or tabs may precede the item, the = and the constants.• Array items may be subscripted.• Character items may be substringed.5.8.2 Namelist OutputNamelist output is accomplished using a READ statement by specifying a namelist group as theoutput item. The following statement shows the format:WRITE ([unit=] u, [NML=] namelist-group [,control-information])The records output are logically viewed as follows:$group-nameitem = value$ [END]The following rules describe these output records:• One record is output per value.• Multiple values are separated by a comma (,).• Values are formatted according to the rules of the list-directed write. Exception:character items are <strong>del</strong>imited by an apostrophe (').• An apostrophe (') or a quote (") in the value is represented by two consecutiveapostrophes or quotes.172 Chapter 6
6 Fortran IntrinsicsThis chapter lists the FORTRAN 77 and Fortran 90/95 intrinsics and subroutines, intrinsicsdefined in the HPF Language Specification, and CM Fortran intrinsics. Color-coding is used tohighlight the different Fortran versions. The colors used are as follows:• FORTRAN 77 is shown in black• Fortran 90/95 is shown in blue• HPF is shown in red• CM Fortran is shown in green6.1 FORTRAN 77 and Fortran 90/95 Intrinsics byCategoryThe tables in this section contain the FORTRAN 77 and Fortran 90/95 intrinsics supported by thePGF77 and PGF95 compilers. Intrinsics are categorized by functionality and alphabetized bygeneric name within each table. All FORTRAN 77 intrinsics are supported and are detailed in theANSI FORTRAN Standard.To simplify the tables in this section, two groups of intrinsic types have been given the followingabbreviated group names:NUMERICNONCHARINTEGER, REAL, COMPLEXLOGICAL, INTEGER, REAL, COMPLEXFortran Intrinsics 173
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While every precaution has been tak
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Table 6-18: HPF Intrinsics and Libr
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• ISO/IEC 1539 : 1991, Informatio
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non-printing characters, such as TA
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1 Language OverviewThis chapter des
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Table 1-1: Order of StatementsOPTIO
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1.3 Free Form FormattingUsing free
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A continuation line is indicated by
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The following examples are invalid
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Operators of equal rank are evaluat
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1.7.3 Relational ExpressionsA relat
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1.9 Assignment StatementsA Fortran
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defined in the character expression
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2 Fortran Data TypesEvery Fortran e
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Table 2-3: Data Type ExtensionsType
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[s]d 1 d 2 ...d n [ _ kind-paramete
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2.2.5 Complex ConstantsA complex co
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CHARACTER(LEN=20) FIRST, LAST, MIDD
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2.4.4 Character SubstringA characte
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• A constant is always either 32
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STRUCTURE [/structure_name/][field_
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RECORD /person/ population(2), me..
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BYTE items(12)END MAPEND UNIONEND S
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declarator, modifying its value dur
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90/95 This statement is either new
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ALLOCATE 90The ALLOCATE statement i
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DescriptionARRAY can be used in a s
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ExamplesBACKSPACE 4BACKSPACE ( UNIT
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ExamplesCALL CRASH! no argumentsCAL
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Note: The data type of a symbol may
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HPFExampleDIMENSION R(10)COMMON /HO
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ALL1is an allocatable COMMON block
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I = I + H..END SUBROUTINE YEND SUBR
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DEALLOCATE 77The DEALLOCATE stateme
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See AlsoREAD, PRINTDIMENSION 90The
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DO (non-block)DO label [,] index =
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DOUBLE COMPLEX § 77The DOUBLE COMP
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SyntaxIF logical expression THENsta
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cfbioserrsis an integer expression
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For example:END FILE(20)END FILE(UN
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e more than one ENTRY statement wit
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EQUIVALENCE 77The EQUIVALENCE state
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extrinsic-kind-keyword is the name
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if no list items are specified; in
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argumentis a symbolic name, startin
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ExampleslistASSIGN 50 TO KGO TO K(5
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IF (Block) 77The block IF statement
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INCLUDE § 77The INCLUDE statement
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FILE= finFORM= fmfin is a character
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DescriptionWhen an INQUIRE by file
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INTEGER, INTENT(OUT)::I1I1=R1END SU
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SUBROUTINE TRIG (X,F,Y)Y=F(X)RETURN
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Manipulating data using union decla
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Using the -I command-line option di
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ERR=errsFILE= finFORM=fmcharacter d
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ACCESSThe value of 'APPEND' will be
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• Case is not significant, unless
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The pointer-based variable does not
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Page 126 and 127: .END MODULETypeNon-executableSee Al
Page 128 and 129: • Every item whose value is to be
Page 130 and 131: DescriptionYou create memory storag
Page 132 and 133: RETURN 77The RETURN statement cause
Page 134 and 135: line option). Dummy arguments, name
Page 136 and 137: STRUCTURE § 77The STRUCTURE statem
Page 138 and 139: argumentis a symbolic name, startin
Page 140 and 141: Syntax Derived Type DefinitionTYPE
Page 142 and 143: BYTE num_itemsBYTE items(12)END MAP
Page 144 and 145: ExamplesINTEGER SCORE(30)CHARACTER
Page 146 and 147: eal sumsum = 4h()accept sumand is r
Page 148 and 149: specified with the ":" character ra
Page 150 and 151: For example:SUBROUTINE YSUM1(M,B,C)
Page 152 and 153: 4.5 CM Fortran Extensions4.5.1 The
Page 154 and 155: same manner. Direct access files ar
Page 156 and 157: Table 5-1: OPEN SpecifiersSpecifier
Page 158 and 159: After data is transferred, the file
Page 160 and 161: • Repeatable editor commands whic
Page 162 and 163: On output, the B field descriptor t
Page 164 and 165: 5.5.2.8 G Format ControlThe G forma
Page 166 and 167: 5.5.2.14 O Format Control Octal Val
Page 168 and 169: The X control specifies a number of
Page 170 and 171: 5.7 List-directed formattingList-di
Page 172 and 173: Data TypeINTEGER*4INTEGER*8LOGICAL*
Page 176 and 177: Table 6-1: Numeric FunctionsGeneric
Page 178 and 179: GenericNameIZEXTPurposeZero-ExtendF
Page 180 and 181: GenericNameREALPurposeConvert toREA
Page 182 and 183: GenericNamePurposeNumberof ArgsSIN
Page 184 and 185: GenericNameIANDPurposeLogicalANDNum
Page 186 and 187: Table 6-5: Fortran 90/95 Bit Manipu
Page 188 and 189: Table 6-8: Fortran 90/95 Array Redu
Page 190 and 191: Table 6-10: Fortran 90/95 Array Con
Page 192 and 193: Generic Name Purpose Numberof ArgsP
Page 194 and 195: Table 6-17: Miscellaneous Functions
Page 196 and 197: ArgumentsThe argument STR is the st
Page 198 and 199: SynopsisALLOCATED(ARRAY)ArgumentThe
Page 200 and 201: SynopsisASIND(X)ArgumentThe argumen
Page 202 and 203: ArgumentThe argument X must be of t
Page 204 and 205: Return ValueReturns a complex numbe
Page 206 and 207: COUNT 90Return the number of true e
Page 208 and 209: VALUES(6)VALUES(7)VALUES(8)holds th
Page 210 and 211: Return ValueThe dot product. For VE
Page 212 and 213: EXPONENT 90Return the exponent part
Page 214 and 215: SynopsisIAND(I, J)ArgumentsThe argu
Page 216 and 217: ArgumentThe arguments I and J must
Page 218 and 219: INT8 § 77Converts a real value to
Page 220 and 221: JINT § 77Converts a value to an in
Page 222 and 223: LEN 90Returns the length of the sup
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LLT 90Test the supplied strings to
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LSHIFT § 77Perform a logical shift
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If the MASK parameter is present, t
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MINLOC 90Return the position of the
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MVBITS 90Copies a bit sequence from
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SynopsisNULL([PTR])ArgumentsThe opt
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Return ValueThe return value is the
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SynopsisREAL(A [,KIND])ArgumentsThe
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ArgumentsThe argument X is of type
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Return ValueThe result is an array
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SIZE 90Returns either the total num
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Return ValueThe return value is the
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TRANSFER 90Return a value that has
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VERIFY 90Verify that a character st
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IntrinsicIALL_SUFFIXIANYIANY_PREFIX
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Return ValueThe shifted array with
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getloghostnmlstatputenvsymlnkttynam
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esyndbesj0dbesj1dbesjndbesy0dbesy1d
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Descriptionctime converts a system
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fgetcGet character from a logical u
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Synopsisinteger function fseek(lu,
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Synopsisinteger function getc(ch)ch
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Synopsisinteger function getuid()De
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isattyIs logical unit a tty.Synopsi
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DescriptionReturn the value which i
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perrorPrint error message.Synopsiss
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DescriptionThe functions rand and i
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DescriptionReturn the index of the
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except lstat returns information ab
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ttynamGet name of a terminalSynopsi
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7.2.2 VAX/VMS System SubroutinesDAT
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destis an integer variable or array
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8 OpenMP Directives for FortranThe
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the parallel region redundantly. Th
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In the presence of an IF clause, th
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!$OMP SINGLE [Clauses]< Fortran cod
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By default, there is an implicit ba
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appear within a parallel region. It
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[!$OMP SECTION]< Fortran code block
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directive. When a common block that
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subroutine omp_unset_lock(integer_v
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9 HPF DirectivesHPF directives are
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ALIGN - REALIGNThe ALIGN directive
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See AlsoThe TEMPLATE and PROCESSORS
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Example!HPF$!HPF$!HPF$!HPF$REAL A(1
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See AlsoFor details on the PROCESSO
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TypeSpecificationSee AlsoFor detail
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IntrinsicGLOBAL_TO_LOCALGLOBAL_UBOU
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Return ValueIf the actual argument
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ArgumentsARRAY may be of any type;
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Return TypeThe result is of type de
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ArgumentsOptional argument. PROC.AR
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IndexABSTRACT_TO_PHYSICAL..........
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DATA ..............................
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GETLOG ............................
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EXP ...............................
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F specifier........................
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LOCAL_UNIDEX.......................
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OpenMP Fortran Directives .........
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DOWHILE ...........................
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FMT specifier......................
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