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gfortran.texi: Corrected references to MALLOC intrinsic.

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2006-10-01  Brooks Moses  <bmoses@stanford.edu>

	* gfortran.texi: Corrected references to MALLOC intrinsic.
	* invoke.texi: Minor cleanup and clarification to the Dialect
	Options section.

From-SVN: r117350
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Brooks Moses 2006-10-01 19:11:31 +00:00 committed by Steven G. Kargl
parent 5f79d6437c
commit 3397327cdc
3 changed files with 34 additions and 42 deletions
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6
gcc/fortran/ChangeLog
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@ -1,3 +1,9 @@
2006-10-01 Brooks Moses <bmoses@stanford.edu>
* gfortran.texi: Corrected references to MALLOC intrinsic.
* invoke.texi: Minor cleanup and clarification to the Dialect
Options section.
2006-09-30 Brooks Moses <bmoses@stanford.edu>
* invoke.texi: Add mention of BOZ constants and integer

25
gcc/fortran/gfortran.texi
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@ -1081,30 +1081,9 @@ address is cast to an integer type:
ipt = loc(ar) ! Makes arpte is an alias for ar
arpte(1) = 1.0 ! Sets ar(1) to 1.0
@end smallexample
The pointer can also be set by a call to a malloc-type
function. There is no malloc intrinsic implemented as part of the
Cray pointer extension, but it might be a useful future addition to
@command{gfortran}. Even without an intrinsic malloc function,
dynamic memory allocation can be combined with Cray pointers by
calling a short C function:
@smallexample
mymalloc.c:
The pointer can also be set by a call to the @code{MALLOC} intrinsic
(see @ref{MALLOC}).
void mymalloc_(void **ptr, int *nbytes)
@{
*ptr = malloc(*nbytes);
return;
@}
caller.f:
program caller
integer ipinfo;
real*4 data
pointer (ipdata, data(1024))
call mymalloc(ipdata,4*1024)
end
@end smallexample
Cray pointees often are used to alias an existing variable. For
example:
@smallexample

45
gcc/fortran/invoke.texi
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@ -172,8 +172,8 @@ by type. Explanations are in the following sections.
@cindex language, dialect options
@cindex options, dialect
The following options control the dialect of Fortran
that the compiler accepts:
The following options control the details of the Fortran dialect
accepted by the compiler:
@table @gcctabopt
@cindex -ffree-form option
@ -189,7 +189,8 @@ that the compiler accepts:
@item -ffixed-form
Specify the layout used by the source file. The free form layout
was introduced in Fortran 90. Fixed form was traditionally used in
older Fortran programs.
older Fortran programs. When neither option is specified, the source
form is determined by the file extension.
@cindex -fall-intrinsics
@item -fall-intrinsics
@ -204,16 +205,16 @@ gfortran will ignore @option{-Wnonstd-intrinsics}.
@cindex -fd-lines-as-comments, option
@item -fd-lines-as-code
@item -fd-lines-as-comment
Enables special treating for lines with @samp{d} or @samp{D} in fixed
form sources. If the @option{-fd-lines-as-code} option is given
they are treated as if the first column contained a blank. If the
Enable special treatment for lines beginning with @samp{d} or @samp{D}
in fixed form sources. If the @option{-fd-lines-as-code} option is
given they are treated as if the first column contained a blank. If the
@option{-fd-lines-as-comments} option is given, they are treated as
comment lines.
@cindex option, -fdefault-double-8
@cindex -fdefault-double-8, option
@item -fdefault-double-8
Set the "DOUBLE PRECISION" type to an 8 byte wide.
Set the @code{DOUBLE PRECISION} type to an 8 byte wide type.
@cindex option, -fdefault-integer-8
@cindex -fdefault-integer-8, option
@ -240,8 +241,8 @@ Allow @samp{$} as a valid character in a symbol name.
@item -fno-backslash
@cindex backslash
@cindex escape characters
Compile switch to change the interpretation of a backslash from
``C''-style escape characters to a single backslash character.
Change the interpretation of backslashes in string literals from
``C-style'' escape characters to a single backslash character.
@cindex -ffixed-line-length-@var{n} option
@cindex options, -ffixed-line-length-@var{n}
@ -258,9 +259,9 @@ if padded to that length) after the ends of short fixed-form lines.
@cindex card image
@cindex extended-source option
Popular values for @var{n} include 72 (the
standard and the default), 80 (card image), and 132 (corresponds
standard and the default), 80 (card image), and 132 (corresponding
to ``extended-source'' options in some popular compilers).
@var{n} may be @samp{none}, meaning that the entire line is meaningful
@var{n} may also be @samp{none}, meaning that the entire line is meaningful
and that continued character constants never have implicit spaces appended
to them to fill out the line.
@option{-ffixed-line-length-0} means the same thing as
@ -275,7 +276,7 @@ to them to fill out the line.
@cindex free form
@cindex limits, lengths of source lines
Set column after which characters are ignored in typical free-form
lines in the source file. For free-form, the default value is 132.
lines in the source file. The default value is 132.
@var{n} may be @samp{none}, meaning that the entire line is meaningful.
@option{-ffree-line-length-0} means the same thing as
@option{-ffree-line-length-none}.
@ -284,7 +285,7 @@ lines in the source file. For free-form, the default value is 132.
@cindex option -fmax-identifier-length=@var{n}
@item -fmax-identifier-length=@var{n}
Specify the maximum allowed identifier length. Typical values are
31 (Fortran 95) and 63 (Fortran 200x).
31 (Fortran 95) and 63 (Fortran 2003).
@cindex -fimplicit-none option
@cindex options, -fimplicit-none
@ -296,15 +297,17 @@ Specify that no implicit typing is allowed, unless overridden by explicit
@cindex -fcray-pointer option
@cindex options, -fcray-pointer
@item -fcray-pointer
Enables the Cray pointer extension, which provides a C-like pointer.
Enable the Cray pointer extension, which provides C-like pointer
functionality.
@cindex -fopenmp
@cindex options, -fopenmp
@item -fopenmp
Enables handling of OpenMP @code{!$omp} directives in free form
Enable the OpenMP extensions. This includes OpenMP @code{!$omp} directives
in free form
and @code{c$omp}, @code{*$omp} and @code{!$omp} directives in fixed form,
enables @code{!$} conditional compilation sentinels in free form
and @code{c$}, @code{*$} and @code{!$} sentinels in fixed form
@code{!$} conditional compilation sentinels in free form
and @code{c$}, @code{*$} and @code{!$} sentinels in fixed form,
and when linking arranges for the OpenMP runtime library to be linked
in.
@ -323,8 +326,12 @@ will be initialized to @math{-1} instead.
@cindex -std=@var{std} option
@cindex option, -std=@var{std}
@item -std=@var{std}
Conform to the specified standard. Allowed values for @var{std} are
@samp{gnu}, @samp{f95}, @samp{f2003} and @samp{legacy}.
Conform to the specified standard. The default value for @var{std} is
@samp{gnu}; a superset of the Fortran 95 standard which includes all
of the GNU extensions recommended for use in new code. The @samp{legacy}
value also includes obsolete extensions that may be required for old
non-standard programs. Strict conformance to the Fortran 95 and Fortran 2003
standards is specified by @samp{f95} and @samp{f2003}, respectively.
@end table