882 lines
23 KiB
C++
882 lines
23 KiB
C++
/* Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007
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Free Software Foundation, Inc.
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Contributed by Andy Vaught
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This file is part of the GNU Fortran 95 runtime library (libgfortran).
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Libgfortran is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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Libgfortran is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Libgfortran; see the file COPYING. If not, write to
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the Free Software Foundation, 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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/* As a special exception, if you link this library with other files,
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some of which are compiled with GCC, to produce an executable,
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this library does not by itself cause the resulting executable
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to be covered by the GNU General Public License.
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This exception does not however invalidate any other reasons why
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the executable file might be covered by the GNU General Public License. */
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#ifndef GFOR_IO_H
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#define GFOR_IO_H
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/* IO library include. */
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#include "libgfortran.h"
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#include <setjmp.h>
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#include <gthr.h>
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/* Basic types used in data transfers. */
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typedef enum
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{ BT_NULL, BT_INTEGER, BT_LOGICAL, BT_CHARACTER, BT_REAL,
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BT_COMPLEX
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}
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bt;
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struct st_parameter_dt;
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typedef struct stream
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{
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char *(*alloc_w_at) (struct stream *, int *, gfc_offset);
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char *(*alloc_r_at) (struct stream *, int *, gfc_offset);
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try (*sfree) (struct stream *);
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try (*close) (struct stream *);
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try (*seek) (struct stream *, gfc_offset);
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try (*trunc) (struct stream *);
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int (*read) (struct stream *, void *, size_t *);
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int (*write) (struct stream *, const void *, size_t *);
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try (*set) (struct stream *, int, size_t);
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}
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stream;
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/* Macros for doing file I/O given a stream. */
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#define sfree(s) ((s)->sfree)(s)
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#define sclose(s) ((s)->close)(s)
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#define salloc_r(s, len) ((s)->alloc_r_at)(s, len, -1)
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#define salloc_w(s, len) ((s)->alloc_w_at)(s, len, -1)
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#define salloc_r_at(s, len, where) ((s)->alloc_r_at)(s, len, where)
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#define salloc_w_at(s, len, where) ((s)->alloc_w_at)(s, len, where)
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#define sseek(s, pos) ((s)->seek)(s, pos)
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#define struncate(s) ((s)->trunc)(s)
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#define sread(s, buf, nbytes) ((s)->read)(s, buf, nbytes)
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#define swrite(s, buf, nbytes) ((s)->write)(s, buf, nbytes)
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#define sset(s, c, n) ((s)->set)(s, c, n)
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/* Macros for testing what kinds of I/O we are doing. */
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#define is_array_io(dtp) ((dtp)->internal_unit_desc)
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#define is_internal_unit(dtp) ((dtp)->u.p.unit_is_internal)
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#define is_stream_io(dtp) ((dtp)->u.p.current_unit->flags.access == ACCESS_STREAM)
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/* The array_loop_spec contains the variables for the loops over index ranges
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that are encountered. Since the variables can be negative, ssize_t
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is used. */
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typedef struct array_loop_spec
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{
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/* Index counter for this dimension. */
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ssize_t idx;
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/* Start for the index counter. */
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ssize_t start;
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/* End for the index counter. */
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ssize_t end;
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/* Step for the index counter. */
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ssize_t step;
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}
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array_loop_spec;
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/* Representation of a namelist object in libgfortran
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Namelist Records
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&GROUPNAME OBJECT=value[s] [,OBJECT=value[s]].../
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or
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&GROUPNAME OBJECT=value[s] [,OBJECT=value[s]]...&END
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The object can be a fully qualified, compound name for an intrinsic
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type, derived types or derived type components. So, a substring
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a(:)%b(4)%ch(2:4)(1:7) has to be treated correctly in namelist
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read. Hence full information about the structure of the object has
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to be available to list_read.c and write.
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These requirements are met by the following data structures.
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namelist_info type contains all the scalar information about the
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object and arrays of descriptor_dimension and array_loop_spec types for
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arrays. */
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typedef struct namelist_type
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{
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/* Object type, stored as GFC_DTYPE_xxxx. */
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bt type;
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/* Object name. */
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char * var_name;
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/* Address for the start of the object's data. */
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void * mem_pos;
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/* Flag to show that a read is to be attempted for this node. */
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int touched;
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/* Length of intrinsic type in bytes. */
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int len;
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/* Rank of the object. */
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int var_rank;
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/* Overall size of the object in bytes. */
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index_type size;
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/* Length of character string. */
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index_type string_length;
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descriptor_dimension * dim;
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array_loop_spec * ls;
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struct namelist_type * next;
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}
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namelist_info;
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/* Options for the OPEN statement. */
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typedef enum
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{ ACCESS_SEQUENTIAL, ACCESS_DIRECT, ACCESS_APPEND, ACCESS_STREAM,
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ACCESS_UNSPECIFIED
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}
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unit_access;
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typedef enum
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{ ACTION_READ, ACTION_WRITE, ACTION_READWRITE,
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ACTION_UNSPECIFIED
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}
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unit_action;
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typedef enum
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{ BLANK_NULL, BLANK_ZERO, BLANK_UNSPECIFIED }
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unit_blank;
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typedef enum
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{ DELIM_NONE, DELIM_APOSTROPHE, DELIM_QUOTE,
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DELIM_UNSPECIFIED
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}
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unit_delim;
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typedef enum
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{ FORM_FORMATTED, FORM_UNFORMATTED, FORM_UNSPECIFIED }
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unit_form;
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typedef enum
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{ POSITION_ASIS, POSITION_REWIND, POSITION_APPEND,
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POSITION_UNSPECIFIED
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}
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unit_position;
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typedef enum
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{ STATUS_UNKNOWN, STATUS_OLD, STATUS_NEW, STATUS_SCRATCH,
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STATUS_REPLACE, STATUS_UNSPECIFIED
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}
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unit_status;
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typedef enum
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{ PAD_YES, PAD_NO, PAD_UNSPECIFIED }
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unit_pad;
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typedef enum
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{ ADVANCE_YES, ADVANCE_NO, ADVANCE_UNSPECIFIED }
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unit_advance;
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typedef enum
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{READING, WRITING}
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unit_mode;
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#define CHARACTER1(name) \
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char * name; \
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gfc_charlen_type name ## _len
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#define CHARACTER2(name) \
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gfc_charlen_type name ## _len; \
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char * name
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typedef struct
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{
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st_parameter_common common;
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GFC_INTEGER_4 recl_in;
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CHARACTER2 (file);
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CHARACTER1 (status);
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CHARACTER2 (access);
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CHARACTER1 (form);
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CHARACTER2 (blank);
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CHARACTER1 (position);
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CHARACTER2 (action);
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CHARACTER1 (delim);
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CHARACTER2 (pad);
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CHARACTER1 (convert);
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}
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st_parameter_open;
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#define IOPARM_CLOSE_HAS_STATUS (1 << 7)
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typedef struct
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{
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st_parameter_common common;
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CHARACTER1 (status);
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}
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st_parameter_close;
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typedef struct
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{
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st_parameter_common common;
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}
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st_parameter_filepos;
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#define IOPARM_INQUIRE_HAS_EXIST (1 << 7)
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#define IOPARM_INQUIRE_HAS_OPENED (1 << 8)
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#define IOPARM_INQUIRE_HAS_NUMBER (1 << 9)
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#define IOPARM_INQUIRE_HAS_NAMED (1 << 10)
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#define IOPARM_INQUIRE_HAS_NEXTREC (1 << 11)
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#define IOPARM_INQUIRE_HAS_RECL_OUT (1 << 12)
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#define IOPARM_INQUIRE_HAS_STRM_POS_OUT (1 << 13)
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#define IOPARM_INQUIRE_HAS_FILE (1 << 14)
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#define IOPARM_INQUIRE_HAS_ACCESS (1 << 15)
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#define IOPARM_INQUIRE_HAS_FORM (1 << 16)
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#define IOPARM_INQUIRE_HAS_BLANK (1 << 17)
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#define IOPARM_INQUIRE_HAS_POSITION (1 << 18)
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#define IOPARM_INQUIRE_HAS_ACTION (1 << 19)
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#define IOPARM_INQUIRE_HAS_DELIM (1 << 20)
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#define IOPARM_INQUIRE_HAS_PAD (1 << 21)
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#define IOPARM_INQUIRE_HAS_NAME (1 << 22)
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#define IOPARM_INQUIRE_HAS_SEQUENTIAL (1 << 23)
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#define IOPARM_INQUIRE_HAS_DIRECT (1 << 24)
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#define IOPARM_INQUIRE_HAS_FORMATTED (1 << 25)
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#define IOPARM_INQUIRE_HAS_UNFORMATTED (1 << 26)
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#define IOPARM_INQUIRE_HAS_READ (1 << 27)
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#define IOPARM_INQUIRE_HAS_WRITE (1 << 28)
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#define IOPARM_INQUIRE_HAS_READWRITE (1 << 29)
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#define IOPARM_INQUIRE_HAS_CONVERT (1 << 30)
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typedef struct
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{
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st_parameter_common common;
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GFC_INTEGER_4 *exist, *opened, *number, *named;
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GFC_INTEGER_4 *nextrec, *recl_out;
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GFC_IO_INT *strm_pos_out;
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CHARACTER1 (file);
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CHARACTER2 (access);
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CHARACTER1 (form);
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CHARACTER2 (blank);
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CHARACTER1 (position);
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CHARACTER2 (action);
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CHARACTER1 (delim);
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CHARACTER2 (pad);
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CHARACTER1 (name);
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CHARACTER2 (sequential);
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CHARACTER1 (direct);
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CHARACTER2 (formatted);
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CHARACTER1 (unformatted);
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CHARACTER2 (read);
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CHARACTER1 (write);
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CHARACTER2 (readwrite);
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CHARACTER1 (convert);
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}
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st_parameter_inquire;
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struct gfc_unit;
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struct format_data;
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#define IOPARM_DT_LIST_FORMAT (1 << 7)
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#define IOPARM_DT_NAMELIST_READ_MODE (1 << 8)
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#define IOPARM_DT_HAS_REC (1 << 9)
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#define IOPARM_DT_HAS_SIZE (1 << 10)
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#define IOPARM_DT_HAS_IOLENGTH (1 << 11)
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#define IOPARM_DT_HAS_FORMAT (1 << 12)
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#define IOPARM_DT_HAS_ADVANCE (1 << 13)
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#define IOPARM_DT_HAS_INTERNAL_UNIT (1 << 14)
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#define IOPARM_DT_HAS_NAMELIST_NAME (1 << 15)
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/* Internal use bit. */
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#define IOPARM_DT_IONML_SET (1 << 31)
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typedef struct st_parameter_dt
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{
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st_parameter_common common;
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GFC_IO_INT rec;
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GFC_IO_INT *size, *iolength;
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gfc_array_char *internal_unit_desc;
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CHARACTER1 (format);
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CHARACTER2 (advance);
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CHARACTER1 (internal_unit);
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CHARACTER2 (namelist_name);
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/* Private part of the structure. The compiler just needs
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to reserve enough space. */
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union
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{
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struct
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{
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void (*transfer) (struct st_parameter_dt *, bt, void *, int,
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size_t, size_t);
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struct gfc_unit *current_unit;
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/* Item number in a formatted data transfer. Also used in namelist
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read_logical as an index into line_buffer. */
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int item_count;
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unit_mode mode;
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unit_blank blank_status;
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enum {SIGN_S, SIGN_SS, SIGN_SP} sign_status;
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int scale_factor;
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int max_pos; /* Maximum righthand column written to. */
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/* Number of skips + spaces to be done for T and X-editing. */
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int skips;
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/* Number of spaces to be done for T and X-editing. */
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int pending_spaces;
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/* Whether an EOR condition was encountered. Value is:
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0 if no EOR was encountered
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1 if an EOR was encountered due to a 1-byte marker (LF)
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2 if an EOR was encountered due to a 2-bytes marker (CRLF) */
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int sf_seen_eor;
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unit_advance advance_status;
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unsigned reversion_flag : 1; /* Format reversion has occurred. */
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unsigned first_item : 1;
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unsigned seen_dollar : 1;
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unsigned eor_condition : 1;
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unsigned no_leading_blank : 1;
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unsigned char_flag : 1;
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unsigned input_complete : 1;
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unsigned at_eol : 1;
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unsigned comma_flag : 1;
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/* A namelist specific flag used in the list directed library
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to flag that calls are being made from namelist read (eg. to
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ignore comments or to treat '/' as a terminator) */
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unsigned namelist_mode : 1;
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/* A namelist specific flag used in the list directed library
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to flag read errors and return, so that an attempt can be
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made to read a new object name. */
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unsigned nml_read_error : 1;
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/* A sequential formatted read specific flag used to signal that a
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character string is being read so don't use commas to shorten a
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formatted field width. */
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unsigned sf_read_comma : 1;
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/* A namelist specific flag used to enable reading input from
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line_buffer for logical reads. */
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unsigned line_buffer_enabled : 1;
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/* An internal unit specific flag used to identify that the associated
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unit is internal. */
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unsigned unit_is_internal : 1;
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/* An internal unit specific flag to signify an EOF condition for list
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directed read. */
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unsigned at_eof : 1;
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/* 16 unused bits. */
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char last_char;
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char nml_delim;
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int repeat_count;
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int saved_length;
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int saved_used;
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bt saved_type;
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char *saved_string;
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char *scratch;
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char *line_buffer;
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struct format_data *fmt;
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jmp_buf *eof_jump;
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namelist_info *ionml;
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/* A flag used to identify when a non-standard expanded namelist read
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has occurred. */
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int expanded_read;
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/* Storage area for values except for strings. Must be large
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enough to hold a complex value (two reals) of the largest
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kind. */
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char value[32];
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gfc_offset size_used;
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} p;
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/* This pad size must be equal to the pad_size declared in
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trans-io.c (gfc_build_io_library_fndecls). The above structure
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must be smaller or equal to this array. */
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char pad[16 * sizeof (char *) + 32 * sizeof (int)];
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} u;
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}
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st_parameter_dt;
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/* Ensure st_parameter_dt's u.pad is bigger or equal to u.p. */
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extern char check_st_parameter_dt[sizeof (((st_parameter_dt *) 0)->u.pad)
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>= sizeof (((st_parameter_dt *) 0)->u.p)
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? 1 : -1];
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#undef CHARACTER1
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#undef CHARACTER2
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typedef struct
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{
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unit_access access;
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unit_action action;
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unit_blank blank;
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unit_delim delim;
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unit_form form;
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int is_notpadded;
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unit_position position;
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unit_status status;
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unit_pad pad;
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unit_convert convert;
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int has_recl;
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}
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unit_flags;
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typedef struct gfc_unit
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{
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int unit_number;
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stream *s;
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/* Treap links. */
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struct gfc_unit *left, *right;
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int priority;
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int read_bad, current_record, saved_pos, previous_nonadvancing_write;
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enum
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{ NO_ENDFILE, AT_ENDFILE, AFTER_ENDFILE }
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endfile;
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unit_mode mode;
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unit_flags flags;
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/* recl -- Record length of the file.
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last_record -- Last record number read or written
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maxrec -- Maximum record number in a direct access file
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bytes_left -- Bytes left in current record.
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strm_pos -- Current position in file for STREAM I/O.
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recl_subrecord -- Maximum length for subrecord.
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bytes_left_subrecord -- Bytes left in current subrecord. */
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gfc_offset recl, last_record, maxrec, bytes_left, strm_pos,
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recl_subrecord, bytes_left_subrecord;
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/* Set to 1 if we have read a subrecord. */
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int continued;
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__gthread_mutex_t lock;
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/* Number of threads waiting to acquire this unit's lock.
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When non-zero, close_unit doesn't only removes the unit
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from the UNIT_ROOT tree, but doesn't free it and the
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last of the waiting threads will do that.
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This must be either atomically increased/decreased, or
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always guarded by UNIT_LOCK. */
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int waiting;
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/* Flag set by close_unit if the unit as been closed.
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Must be manipulated under unit's lock. */
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int closed;
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/* For traversing arrays */
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array_loop_spec *ls;
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int rank;
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int file_len;
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char *file;
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}
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gfc_unit;
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/* Format tokens. Only about half of these can be stored in the
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format nodes. */
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typedef enum
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{
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FMT_NONE = 0, FMT_UNKNOWN, FMT_SIGNED_INT, FMT_ZERO, FMT_POSINT, FMT_PERIOD,
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FMT_COMMA, FMT_COLON, FMT_SLASH, FMT_DOLLAR, FMT_T, FMT_TR, FMT_TL,
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FMT_LPAREN, FMT_RPAREN, FMT_X, FMT_S, FMT_SS, FMT_SP, FMT_STRING,
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FMT_BADSTRING, FMT_P, FMT_I, FMT_B, FMT_BN, FMT_BZ, FMT_O, FMT_Z, FMT_F,
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FMT_E, FMT_EN, FMT_ES, FMT_G, FMT_L, FMT_A, FMT_D, FMT_H, FMT_END
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}
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format_token;
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/* Format nodes. A format string is converted into a tree of these
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structures, which is traversed as part of a data transfer statement. */
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typedef struct fnode
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{
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format_token format;
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int repeat;
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struct fnode *next;
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char *source;
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union
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{
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struct
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{
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int w, d, e;
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}
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real;
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struct
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{
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int length;
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char *p;
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}
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string;
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struct
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{
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int w, m;
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}
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integer;
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int w;
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int k;
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int r;
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int n;
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struct fnode *child;
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}
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u;
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/* Members for traversing the tree during data transfer. */
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int count;
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struct fnode *current;
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}
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fnode;
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/* unix.c */
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extern int move_pos_offset (stream *, int);
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internal_proto(move_pos_offset);
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extern int compare_files (stream *, stream *);
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internal_proto(compare_files);
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extern stream *open_external (st_parameter_open *, unit_flags *);
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internal_proto(open_external);
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extern stream *open_internal (char *, int, gfc_offset);
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internal_proto(open_internal);
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extern stream *input_stream (void);
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internal_proto(input_stream);
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extern stream *output_stream (void);
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internal_proto(output_stream);
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extern stream *error_stream (void);
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internal_proto(error_stream);
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extern int compare_file_filename (gfc_unit *, const char *, int);
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internal_proto(compare_file_filename);
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extern gfc_unit *find_file (const char *file, gfc_charlen_type file_len);
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internal_proto(find_file);
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extern int stream_at_bof (stream *);
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internal_proto(stream_at_bof);
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extern int stream_at_eof (stream *);
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internal_proto(stream_at_eof);
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extern int delete_file (gfc_unit *);
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internal_proto(delete_file);
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extern int file_exists (const char *file, gfc_charlen_type file_len);
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internal_proto(file_exists);
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extern const char *inquire_sequential (const char *, int);
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internal_proto(inquire_sequential);
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extern const char *inquire_direct (const char *, int);
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internal_proto(inquire_direct);
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extern const char *inquire_formatted (const char *, int);
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internal_proto(inquire_formatted);
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extern const char *inquire_unformatted (const char *, int);
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internal_proto(inquire_unformatted);
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extern const char *inquire_read (const char *, int);
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internal_proto(inquire_read);
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extern const char *inquire_write (const char *, int);
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internal_proto(inquire_write);
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extern const char *inquire_readwrite (const char *, int);
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internal_proto(inquire_readwrite);
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extern gfc_offset file_length (stream *);
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internal_proto(file_length);
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extern gfc_offset file_position (stream *);
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internal_proto(file_position);
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extern int is_seekable (stream *);
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internal_proto(is_seekable);
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extern int is_special (stream *);
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internal_proto(is_special);
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extern int is_preconnected (stream *);
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internal_proto(is_preconnected);
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extern void flush_if_preconnected (stream *);
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internal_proto(flush_if_preconnected);
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extern void empty_internal_buffer(stream *);
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internal_proto(empty_internal_buffer);
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extern try flush (stream *);
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internal_proto(flush);
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extern int stream_isatty (stream *);
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internal_proto(stream_isatty);
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extern char * stream_ttyname (stream *);
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internal_proto(stream_ttyname);
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extern gfc_offset stream_offset (stream *s);
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internal_proto(stream_offset);
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extern int unpack_filename (char *, const char *, int);
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internal_proto(unpack_filename);
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/* unit.c */
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/* Maximum file offset, computed at library initialization time. */
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extern gfc_offset max_offset;
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internal_proto(max_offset);
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/* Unit tree root. */
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extern gfc_unit *unit_root;
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internal_proto(unit_root);
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extern __gthread_mutex_t unit_lock;
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internal_proto(unit_lock);
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extern int close_unit (gfc_unit *);
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internal_proto(close_unit);
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extern gfc_unit *get_internal_unit (st_parameter_dt *);
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internal_proto(get_internal_unit);
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extern void free_internal_unit (st_parameter_dt *);
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internal_proto(free_internal_unit);
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extern gfc_unit *find_unit (int);
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internal_proto(find_unit);
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extern gfc_unit *find_or_create_unit (int);
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internal_proto(find_or_create_unit);
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extern gfc_unit *get_unit (st_parameter_dt *, int);
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internal_proto(get_unit);
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extern void unlock_unit (gfc_unit *);
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internal_proto(unlock_unit);
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extern void update_position (gfc_unit *);
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internal_proto(update_position);
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extern void finish_last_advance_record (gfc_unit *u);
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internal_proto (finish_last_advance_record);
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/* open.c */
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extern gfc_unit *new_unit (st_parameter_open *, gfc_unit *, unit_flags *);
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internal_proto(new_unit);
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/* format.c */
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extern void parse_format (st_parameter_dt *);
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internal_proto(parse_format);
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extern const fnode *next_format (st_parameter_dt *);
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internal_proto(next_format);
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extern void unget_format (st_parameter_dt *, const fnode *);
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internal_proto(unget_format);
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extern void format_error (st_parameter_dt *, const fnode *, const char *);
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internal_proto(format_error);
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extern void free_format_data (st_parameter_dt *);
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internal_proto(free_format_data);
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/* transfer.c */
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#define SCRATCH_SIZE 300
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extern const char *type_name (bt);
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internal_proto(type_name);
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extern void *read_block (st_parameter_dt *, int *);
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internal_proto(read_block);
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extern char *read_sf (st_parameter_dt *, int *, int);
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internal_proto(read_sf);
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extern void *write_block (st_parameter_dt *, int);
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internal_proto(write_block);
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extern gfc_offset next_array_record (st_parameter_dt *, array_loop_spec *,
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int*);
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internal_proto(next_array_record);
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extern gfc_offset init_loop_spec (gfc_array_char *, array_loop_spec *,
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gfc_offset *);
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internal_proto(init_loop_spec);
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extern void next_record (st_parameter_dt *, int);
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internal_proto(next_record);
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extern void reverse_memcpy (void *, const void *, size_t);
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internal_proto (reverse_memcpy);
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/* read.c */
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extern void set_integer (void *, GFC_INTEGER_LARGEST, int);
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internal_proto(set_integer);
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extern GFC_UINTEGER_LARGEST max_value (int, int);
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internal_proto(max_value);
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extern int convert_real (st_parameter_dt *, void *, const char *, int);
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internal_proto(convert_real);
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extern void read_a (st_parameter_dt *, const fnode *, char *, int);
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internal_proto(read_a);
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extern void read_f (st_parameter_dt *, const fnode *, char *, int);
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internal_proto(read_f);
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extern void read_l (st_parameter_dt *, const fnode *, char *, int);
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internal_proto(read_l);
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extern void read_x (st_parameter_dt *, int);
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internal_proto(read_x);
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extern void read_radix (st_parameter_dt *, const fnode *, char *, int, int);
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internal_proto(read_radix);
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extern void read_decimal (st_parameter_dt *, const fnode *, char *, int);
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internal_proto(read_decimal);
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/* list_read.c */
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extern void list_formatted_read (st_parameter_dt *, bt, void *, int, size_t,
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size_t);
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internal_proto(list_formatted_read);
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extern void finish_list_read (st_parameter_dt *);
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internal_proto(finish_list_read);
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extern void namelist_read (st_parameter_dt *);
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internal_proto(namelist_read);
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extern void namelist_write (st_parameter_dt *);
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internal_proto(namelist_write);
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/* write.c */
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extern void write_a (st_parameter_dt *, const fnode *, const char *, int);
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internal_proto(write_a);
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extern void write_b (st_parameter_dt *, const fnode *, const char *, int);
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internal_proto(write_b);
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extern void write_d (st_parameter_dt *, const fnode *, const char *, int);
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internal_proto(write_d);
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extern void write_e (st_parameter_dt *, const fnode *, const char *, int);
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internal_proto(write_e);
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extern void write_en (st_parameter_dt *, const fnode *, const char *, int);
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internal_proto(write_en);
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extern void write_es (st_parameter_dt *, const fnode *, const char *, int);
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internal_proto(write_es);
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extern void write_f (st_parameter_dt *, const fnode *, const char *, int);
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internal_proto(write_f);
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extern void write_i (st_parameter_dt *, const fnode *, const char *, int);
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internal_proto(write_i);
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extern void write_l (st_parameter_dt *, const fnode *, char *, int);
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internal_proto(write_l);
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extern void write_o (st_parameter_dt *, const fnode *, const char *, int);
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internal_proto(write_o);
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extern void write_x (st_parameter_dt *, int, int);
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internal_proto(write_x);
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extern void write_z (st_parameter_dt *, const fnode *, const char *, int);
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internal_proto(write_z);
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extern void list_formatted_write (st_parameter_dt *, bt, void *, int, size_t,
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size_t);
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internal_proto(list_formatted_write);
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/* size_from_kind.c */
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extern size_t size_from_real_kind (int);
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internal_proto(size_from_real_kind);
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extern size_t size_from_complex_kind (int);
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internal_proto(size_from_complex_kind);
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/* lock.c */
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extern void free_ionml (st_parameter_dt *);
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internal_proto(free_ionml);
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|
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static inline void
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inc_waiting_locked (gfc_unit *u)
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{
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#ifdef HAVE_SYNC_FETCH_AND_ADD
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(void) __sync_fetch_and_add (&u->waiting, 1);
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#else
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u->waiting++;
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#endif
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}
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static inline int
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predec_waiting_locked (gfc_unit *u)
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{
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#ifdef HAVE_SYNC_FETCH_AND_ADD
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return __sync_add_and_fetch (&u->waiting, -1);
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#else
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return --u->waiting;
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#endif
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}
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static inline void
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dec_waiting_unlocked (gfc_unit *u)
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{
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#ifdef HAVE_SYNC_FETCH_AND_ADD
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(void) __sync_fetch_and_add (&u->waiting, -1);
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#else
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__gthread_mutex_lock (&unit_lock);
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u->waiting--;
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__gthread_mutex_unlock (&unit_lock);
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#endif
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}
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#endif
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