Open Watcom FORTRAN 77 Language Reference

Open Watcom FORTRAN 77 Extensions to Standard FORTRAN 77
24. Several additional intrinsic functions are supported:
ALGAMA ALLOCATED BTEST CDABS
CDCOS CDSIN CDEXP CDSQRT
CDLOG COTAN DCMPLX DCONJG
DCOTAN DERF DERFC DFLOAT
DGAMMA DIMAG DLGAMA DREAL
ERF ERFC GAMMA HFIX
IAND IBCHNG IBCLR IBSET
IEOR IOR ISHA ISHC
ISHFT ISHL ISIZEOF LENTRIM
LGAMMA LOC NOT VOLATILE
25. The LOC intrinsic function returns the address of an expression.
26. The ISIZEOF intrinsic function returns the size of a structure name, the size of an array with a
constant array declarator, or the size of a variable.
27. The CHAR intrinsic function is allowed in constant expressions.
28. The ALLOCATE and DEALLOCATE statements may be used to dynamically allocate and
deallocate arrays.
29. The ALLOCATED intrinsic function may be used to determine if an allocatable array is allocated.
30. The following additional I/O specifiers for the OPEN statement are supported.
ACTION=
CARRIAGECONTROL=
RECORDTYPE=
RECL= is also allowed for files opened for
sequential access
ACCESS=’APPEND’
BLOCKSIZE=
SHARE=
31. The following additional I/O specifiers for the INQUIRE statement are supported.
ACTION=
CARRIAGECONTROL=
RECORDTYPE=
BLOCKSIZE=
SHARE=
32. In the INQUIRE statement, character data may also be returned in variables or array elements
with a substring operation.
CHARACTER FN*20
INQUIRE( UNIT=1, FILE=FN(10:20) )
33. List-directed I/O is allowed with internal files.
34. No asterisk is required for list-directed I/O.
PRINT, X, Y
35. The NAMELIST statement is supported.
Open Watcom FORTRAN 77 Extensions to Standard FORTRAN 77 287