Open Watcom FORTRAN 77 Language Reference

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Language Reference 2.18 DEALLOCATE Statement DEALLOCATE (arraylist [, STAT = ierr]) where: arraylist ierr is a list of allocatable array names separated by commas. is an integer variable that returns the status of the attempted deallocation. Allocatable arrays may be dynamically allocated and deallocated at execution time. An array must have been declared allocatable by specifying its dimensions using colons only. No array bounds are specified. Example: DIMENSION A(:), B(:,:) In the above example, A is declared to be a one-dimensional allocatable array and B is declared to be a two-dimensional allocatable array. The DEALLOCATE statement frees up any memory allocated for the specified array(s). It then disassociates the specified array(s) from the memory to which it was associated. The deallocation does not necessarily succeed. For example, an attempt to deallocate an array that was not previously allocated will cause an error. Example: DIMENSION A(:), B(:,:) . . . ALLOCATE( A(N), B(0:4,5) ) . . . DEALLOCATE( A ) More than one allocatable array may appear in an DEALLOCATE statement, separated by commas. Example: DIMENSION A(:), B(:,:) . . . ALLOCATE( A(N), B(0:4,5) ) . . . DEALLOCATE( A, B ) If the deallocation fails and the STAT= specifier was not used, an execution-time error occurs. If the STAT= specifier is used, the specified variable returns a zero value if the deallocation succeeded, and a non-zero value if the deallocation failed. 42 DEALLOCATE Statement
FORTRAN Statements Example: DIMENSION A(:), B(:,:) . . . ALLOCATE( A(N), B(0:4,5), STAT=IALLOC ) IF( IALLOC .NE. 0 ) PRINT *, ’Allocation failure’ . . . DEALLOCATE( A, B, STAT=IFREE ) IF( IFREE .NE. 0 ) PRINT *, ’Deallocation failure’ An attempt to deallocate an unallocated array results in an execution-time error. The array must be allocated first (see the ALLOCATE statement). An array that was allocated using the LOCATION= specifier need not be deallocated. For more information on arrays, see the chapter entitled "Arrays" on page 159. DEALLOCATE Statement 43
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Open Watcom FORTRAN 77 Language Ref
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Page 6 and 7: Table of Contents 2.25 ELSE IF Stat
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Page 58 and 59: Language Reference Transfer of cont
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Page 98 and 99: Language Reference An example of an
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Language Reference 2.54 INCLUDE Sta
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Language Reference Example: LOGICAL
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Language Reference It is assigned t
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Language Reference 3. This specifie
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Language Reference a (d) len is an
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Language Reference 2.57 INTRINSIC S
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Language Reference 2.59 LOOP Statem
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Language Reference 2.61 NAMELIST St
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Language Reference Example: &PERSON
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Language Reference FILE = fin fin i
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Language Reference Notes: 1. If the
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Language Reference 2.64 PARAMETER S
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Language Reference 2.66 PRINT State
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Language Reference Example: PRINT 1
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Language Reference 2.68 QUIT Statem
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Language Reference 2. An internal f
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Language Reference Example: READ( 8
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Language Reference 2.71 RECORD Stat
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Language Reference 2.73 RETURN Stat
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Language Reference Notes: 1. The un
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Language Reference PROGRAM MAIN . .
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Language Reference Example: SELECT
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Language Reference 2.78 STRUCTURE S
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Language Reference 2.80 UNION State
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Language Reference 2.82 VOLATILE St
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Language Reference 2.84 WHILE State
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Language Reference REC = rn IOSTAT
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Language Reference 150
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Language Reference Example: DO10I=1
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Language Reference 123.764 .4352344
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Language Reference Actually, holler
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Language Reference 158 Symbolic Con
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Language Reference [lo:] hi where:
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Language Reference 4.4 Classifying
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Language Reference 4.5 Classifying
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Language Reference Example: CHARACT
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Language Reference STRUCTURE /PERSO
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Language Reference SUBROUTINE PRINT
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Language Reference 172 Unions
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Language Reference Operator Arithme
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Language Reference 7.1.3 Arithmetic
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Language Reference 7.2 Character Ex
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Language Reference where: relop is
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Language Reference Note that the op
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Language Reference 1. logical term
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Language Reference 186 Constant Exp
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Language Reference 8.3 Logical Assi
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Language Reference 8.6 Extended Ass
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Language Reference 192 Extended Ass
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Language Reference Examples follow
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Language Reference 9.4 DO - END DO
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Language Reference The next example
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Language Reference where: stmt is a
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Language Reference Example: * Illeg
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Language Reference - the string -10
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Language Reference 9.12 GUESS-ADMIT
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Language Reference 9.13 QUIT QUIT [
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Language Reference Example: LOOP RE
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Language Reference READ statement t
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Language Reference 214 Notes on Str
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Language Reference 10.3 Records FOR
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Language Reference accessed directl
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Language Reference Example: WRITE(1
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Language Reference 5. Any character
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Language Reference 224 Printing of
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Language Reference Example: REAL X
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Language Reference 11.6 Nonrepeatab
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Language Reference Example: PRINT
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Language Reference Example: INTEGER
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Language Reference 11.7.10.4 E and
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Language Reference n Example: is 4
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Language Reference and is read into
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Language Reference 3. An input item
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Language Reference 1. Blanks are ne
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Language Reference e is an expressi
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Language Reference Example: * Illeg
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Language Reference 12.3.2 Type Conv
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Language Reference 12.3.7 Type Conv
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Language Reference 12.3.13 Remainde
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Language Reference 12.3.18 Choosing
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Language Reference 12.3.24 Square R
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Language Reference 12.3.28 Sine Def
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Language Reference 12.3.33 Arccosin
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Language Reference 12.3.38 Gamma Fu
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Language Reference 12.3.45 Lexicall
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Language Reference Definition: Name
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Language Reference 12.3.53 Binary P
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Language Reference 12.3.58 Allocate
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Language Reference Example: INTEGER
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Language Reference 2. An array name
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Language Reference 5. A name that a
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Language Reference 12.8.1 Dummy Arg
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Language Reference Example: DIMENSI
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Language Reference 282 Subprogram A
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Appendices 284
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Appendices 10. The DOUBLE COMPLEX s
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Appendices 36. Non-character arrays
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Index AMAX1 253 AMIN0 254 $ AMIN1 2
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Index DATAN 260 dummy procedure 280
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Index AINT 250 ANINT 251 ASIN 259 H
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Index DREAL 249 IAND 264 DSIGN 252
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Index RETURN 32, 46, 56, 121, 132,
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