libgfortran/libgfortran.h

   1 /* Common declarations for all of libgfortran.
   2    Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
   3    Contributed by Paul Brook <paul@nowt.org>, and
   4    Andy Vaught <andy@xena.eas.asu.edu>
   5
   6 This file is part of the GNU Fortran 95 runtime library (libgfortran).
   7
   8 Libgfortran is free software; you can redistribute it and/or
   9 modify it under the terms of the GNU Lesser General Public
  10 License as published by the Free Software Foundation; either
  11 version 2.1 of the License, or (at your option) any later version.
  12
  13 Libgfortran is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU Lesser General Public License for more details.
  17
  18 You should have received a copy of the GNU Lesser General Public
  19 License along with libgfor; see the file COPYING.LIB.  If not,
  20 write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  21 Boston, MA 02110-1301, USA.  */
  22
  23 /* As a special exception, if you link this library with other files,
  24    some of which are compiled with GCC, to produce an executable,
  25    this library does not by itself cause the resulting executable
  26    to be covered by the GNU General Public License.
  27    This exception does not however invalidate any other reasons why
  28    the executable file might be covered by the GNU General Public License.  */
  29
  30
  31 #ifndef LIBGFOR_H
  32 #define LIBGFOR_H
  33
  34 /* config.h MUST be first because it can affect system headers.  */
  35 #include "config.h"
  36
  37 #include <stdio.h>
  38 #include <math.h>
  39 #include <stddef.h>
  40 #include <float.h>
  41 #include <stdarg.h>
  42
  43 #if HAVE_COMPLEX_H
  44 # include <complex.h>
  45 #else
  46 #define complex __complex__
  47 #endif
  48
  49 #include "../gcc/fortran/libgfortran.h"
  50
  51 #include "c99_protos.h"
  52
  53 #if HAVE_IEEEFP_H
  54 #include <ieeefp.h>
  55 #endif
  56
  57 #include "gstdint.h"
  58
  59 #if HAVE_SYS_TYPES_H
  60 #include <sys/types.h>
  61 #endif
  62 typedef off_t gfc_offset;
  63
  64 #ifndef NULL
  65 #define NULL (void *) 0
  66 #endif
  67
  68 #ifndef __GNUC__
  69 #define __attribute__(x)
  70 #endif
  71
  72
  73 /* On mingw, work around the buggy Windows snprintf() by using the one
  74    mingw provides, __mingw_snprintf().  We also provide a prototype for
  75    __mingw_snprintf(), because the mingw headers currently don't have one.  */
  76 #if HAVE_MINGW_SNPRINTF
  77 extern int __mingw_snprintf (char *, size_t, const char *, ...);
  78 #undef snprintf
  79 #define snprintf __mingw_snprintf
  80 #endif
  81
  82
  83 /* For a library, a standard prefix is a requirement in order to partition
  84    the namespace.  IPREFIX is for symbols intended to be internal to the
  85    library.  */
  86 #define PREFIX(x)       _gfortran_ ## x
  87 #define IPREFIX(x)      _gfortrani_ ## x
  88
  89 /* Magic to rename a symbol at the compiler level.  You continue to refer
  90    to the symbol as OLD in the source, but it'll be named NEW in the asm.  */
  91 #define sym_rename(old, new) sym_rename1(old, __USER_LABEL_PREFIX__, new)
  92 #define sym_rename1(old, ulp, new) sym_rename2(old, ulp, new)
  93 #define sym_rename2(old, ulp, new) extern __typeof(old) old __asm__(#ulp #new)
  94
  95 /* There are several classifications of routines:
  96
  97      (1) Symbols used only within the library,
  98      (2) Symbols to be exported from the library,
  99      (3) Symbols to be exported from the library, but
 100          also used inside the library.
 101
 102    By telling the compiler about these different classifications we can
 103    tightly control the interface seen by the user, and get better code
 104    from the compiler at the same time.
 105
 106    One of the following should be used immediately after the declaration
 107    of each symbol:
 108
 109      internal_proto     Marks a symbol used only within the library,
 110                         and adds IPREFIX to the assembly-level symbol
 111                         name.  The later is important for maintaining
 112                         the namespace partition for the static library.
 113
 114      export_proto       Marks a symbol to be exported, and adds PREFIX
 115                         to the assembly-level symbol name.
 116
 117      export_proto_np    Marks a symbol to be exported without adding PREFIX.
 118
 119      iexport_proto      Marks a function to be exported, but with the
 120                         understanding that it can be used inside as well.
 121
 122      iexport_data_proto Similarly, marks a data symbol to be exported.
 123                         Unfortunately, some systems can't play the hidden
 124                         symbol renaming trick on data symbols, thanks to
 125                         the horribleness of COPY relocations.
 126
 127    If iexport_proto or iexport_data_proto is used, you must also use
 128    iexport or iexport_data after the *definition* of the symbol.  */
 129
 130 #if defined(HAVE_ATTRIBUTE_VISIBILITY)
 131 # define internal_proto(x) \
 132         sym_rename(x, IPREFIX (x)) __attribute__((__visibility__("hidden")))
 133 #else
 134 # define internal_proto(x)      sym_rename(x, IPREFIX(x))
 135 #endif
 136
 137 #if defined(HAVE_ATTRIBUTE_VISIBILITY) && defined(HAVE_ATTRIBUTE_ALIAS)
 138 # define export_proto(x)        sym_rename(x, PREFIX(x))
 139 # define export_proto_np(x)     extern char swallow_semicolon
 140 # define iexport_proto(x)       internal_proto(x)
 141 # define iexport(x)             iexport1(x, IPREFIX(x))
 142 # define iexport1(x,y)          iexport2(x,y)
 143 # define iexport2(x,y) \
 144         extern __typeof(x) PREFIX(x) __attribute__((__alias__(#y)))
 145 /* ??? We're not currently building a dll, and it's wrong to add dllexport
 146    to objects going into a static library archive.  */
 147 #elif 0 && defined(HAVE_ATTRIBUTE_DLLEXPORT)
 148 # define export_proto_np(x)     extern __typeof(x) x __attribute__((dllexport))
 149 # define export_proto(x)    sym_rename(x, PREFIX(x)) __attribute__((dllexport))
 150 # define iexport_proto(x)       export_proto(x)
 151 # define iexport(x)             extern char swallow_semicolon
 152 #else
 153 # define export_proto(x)        sym_rename(x, PREFIX(x))
 154 # define export_proto_np(x)     extern char swallow_semicolon
 155 # define iexport_proto(x)       export_proto(x)
 156 # define iexport(x)             extern char swallow_semicolon
 157 #endif
 158
 159 /* TODO: detect the case when we *can* hide the symbol.  */
 160 #define iexport_data_proto(x)   export_proto(x)
 161 #define iexport_data(x)         extern char swallow_semicolon
 162
 163 /* The only reliable way to get the offset of a field in a struct
 164    in a system independent way is via this macro.  */
 165 #ifndef offsetof
 166 #define offsetof(TYPE, MEMBER)  ((size_t) &((TYPE *) 0)->MEMBER)
 167 #endif
 168
 169 /* The isfinite macro is only available with C99, but some non-C99
 170    systems still provide fpclassify, and there is a `finite' function
 171    in BSD.
 172
 173    Also, isfinite is broken on Cygwin.
 174
 175    When isfinite is not available, try to use one of the
 176    alternatives, or bail out.  */
 177
 178 #if defined(HAVE_BROKEN_ISFINITE) || defined(__CYGWIN__)
 179 #undef isfinite
 180 #endif
 181
 182 #if defined(HAVE_BROKEN_ISNAN)
 183 #undef isnan
 184 #endif
 185
 186 #if defined(HAVE_BROKEN_FPCLASSIFY)
 187 #undef fpclassify
 188 #endif
 189
 190 #if !defined(isfinite)
 191 #if !defined(fpclassify)
 192 #define isfinite(x) ((x) - (x) == 0)
 193 #else
 194 #define isfinite(x) (fpclassify(x) != FP_NAN && fpclassify(x) != FP_INFINITE)
 195 #endif /* !defined(fpclassify) */
 196 #endif /* !defined(isfinite)  */
 197
 198 #if !defined(isnan)
 199 #if !defined(fpclassify)
 200 #define isnan(x) ((x) != (x))
 201 #else
 202 #define isnan(x) (fpclassify(x) == FP_NAN)
 203 #endif /* !defined(fpclassify) */
 204 #endif /* !defined(isfinite)  */
 205
 206 /* TODO: find the C99 version of these an move into above ifdef.  */
 207 #define REALPART(z) (__real__(z))
 208 #define IMAGPART(z) (__imag__(z))
 209 #define COMPLEX_ASSIGN(z_, r_, i_) {__real__(z_) = (r_); __imag__(z_) = (i_);}
 210
 211 #include "kinds.h"
 212
 213 /* Define the type used for the current record number for large file I/O.
 214    The size must be consistent with the size defined on the compiler side.  */
 215 #ifdef HAVE_GFC_INTEGER_8
 216 typedef GFC_INTEGER_8 GFC_IO_INT;
 217 #else
 218 #ifdef HAVE_GFC_INTEGER_4
 219 typedef GFC_INTEGER_4 GFC_IO_INT;
 220 #else
 221 #error "GFC_INTEGER_4 should be available for the library to compile".
 222 #endif
 223 #endif
 224
 225 /* The following two definitions must be consistent with the types used
 226    by the compiler.  */
 227 /* The type used of array indices, amongst other things.  */
 228 typedef ssize_t index_type;
 229 /* The type used for the lengths of character variables.  */
 230 typedef GFC_INTEGER_4 gfc_charlen_type;
 231
 232 /* This will be 0 on little-endian machines and one on big-endian machines.  */
 233 extern int l8_to_l4_offset;
 234 internal_proto(l8_to_l4_offset);
 235
 236 #define GFOR_POINTER_TO_L1(p, kind) \
 237   (l8_to_l4_offset * (kind - 1) + (GFC_LOGICAL_1 *)(p))
 238
 239 #define GFC_INTEGER_1_HUGE \
 240   (GFC_INTEGER_1)((((GFC_UINTEGER_1)1) << 7) - 1)
 241 #define GFC_INTEGER_2_HUGE \
 242   (GFC_INTEGER_2)((((GFC_UINTEGER_2)1) << 15) - 1)
 243 #define GFC_INTEGER_4_HUGE \
 244   (GFC_INTEGER_4)((((GFC_UINTEGER_4)1) << 31) - 1)
 245 #define GFC_INTEGER_8_HUGE \
 246   (GFC_INTEGER_8)((((GFC_UINTEGER_8)1) << 63) - 1)
 247 #ifdef HAVE_GFC_INTEGER_16
 248 #define GFC_INTEGER_16_HUGE \
 249   (GFC_INTEGER_16)((((GFC_UINTEGER_16)1) << 127) - 1)
 250 #endif
 251
 252
 253 typedef struct descriptor_dimension
 254 {
 255   index_type stride;
 256   index_type lbound;
 257   index_type ubound;
 258 }
 259 descriptor_dimension;
 260
 261 #define GFC_ARRAY_DESCRIPTOR(r, type) \
 262 struct {\
 263   type *data;\
 264   size_t offset;\
 265   index_type dtype;\
 266   descriptor_dimension dim[r];\
 267 }
 268
 269 /* Commonly used array descriptor types.  */
 270 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, void) gfc_array_void;
 271 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, char) gfc_array_char;
 272 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_INTEGER_1) gfc_array_i1;
 273 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_INTEGER_2) gfc_array_i2;
 274 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_INTEGER_4) gfc_array_i4;
 275 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_INTEGER_8) gfc_array_i8;
 276 #ifdef HAVE_GFC_INTEGER_16
 277 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_INTEGER_16) gfc_array_i16;
 278 #endif
 279 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_REAL_4) gfc_array_r4;
 280 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_REAL_8) gfc_array_r8;
 281 #ifdef HAVE_GFC_REAL_10
 282 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_REAL_10) gfc_array_r10;
 283 #endif
 284 #ifdef HAVE_GFC_REAL_16
 285 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_REAL_16) gfc_array_r16;
 286 #endif
 287 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_COMPLEX_4) gfc_array_c4;
 288 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_COMPLEX_8) gfc_array_c8;
 289 #ifdef HAVE_GFC_COMPLEX_10
 290 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_COMPLEX_10) gfc_array_c10;
 291 #endif
 292 #ifdef HAVE_GFC_COMPLEX_16
 293 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_COMPLEX_16) gfc_array_c16;
 294 #endif
 295 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_LOGICAL_1) gfc_array_l1;
 296 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_LOGICAL_2) gfc_array_l2;
 297 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_LOGICAL_4) gfc_array_l4;
 298 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_LOGICAL_8) gfc_array_l8;
 299 #ifdef HAVE_GFC_LOGICAL_16
 300 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_LOGICAL_16) gfc_array_l16;
 301 #endif
 302
 303
 304 #define GFC_DESCRIPTOR_RANK(desc) ((desc)->dtype & GFC_DTYPE_RANK_MASK)
 305 #define GFC_DESCRIPTOR_TYPE(desc) (((desc)->dtype & GFC_DTYPE_TYPE_MASK) \
 306                                    >> GFC_DTYPE_TYPE_SHIFT)
 307 #define GFC_DESCRIPTOR_SIZE(desc) ((desc)->dtype >> GFC_DTYPE_SIZE_SHIFT)
 308 #define GFC_DESCRIPTOR_DATA(desc) ((desc)->data)
 309 #define GFC_DESCRIPTOR_DTYPE(desc) ((desc)->dtype)
 310
 311 /* Runtime library include.  */
 312 #define stringize(x) expand_macro(x)
 313 #define expand_macro(x) # x
 314
 315 /* Runtime options structure.  */
 316
 317 typedef struct
 318 {
 319   int stdin_unit, stdout_unit, stderr_unit, optional_plus;
 320   int locus;
 321
 322   int separator_len;
 323   const char *separator;
 324
 325   int use_stderr, all_unbuffered, unbuffered_preconnected, default_recl;
 326   int fpe, dump_core, backtrace;
 327 }
 328 options_t;
 329
 330 extern options_t options;
 331 internal_proto(options);
 332
 333 extern void handler (int);
 334 internal_proto(handler);
 335
 336
 337 /* Compile-time options that will influence the library.  */
 338
 339 typedef struct
 340 {
 341   int warn_std;
 342   int allow_std;
 343   int pedantic;
 344   int convert;
 345   int dump_core;
 346   int backtrace;
 347   int sign_zero;
 348   size_t record_marker;
 349   int max_subrecord_length;
 350   int bounds_check;
 351 }
 352 compile_options_t;
 353
 354 extern compile_options_t compile_options;
 355 internal_proto(compile_options);
 356
 357 extern void init_compile_options (void);
 358 internal_proto(init_compile_options);
 359
 360 #define GFC_MAX_SUBRECORD_LENGTH 2147483639   /* 2**31 - 9 */
 361
 362 /* Structure for statement options.  */
 363
 364 typedef struct
 365 {
 366   const char *name;
 367   int value;
 368 }
 369 st_option;
 370
 371
 372 /* This is returned by notification_std to know if, given the flags
 373    that were given (-std=, -pedantic) we should issue an error, a warning
 374    or nothing.  */
 375 typedef enum
 376 { SILENT, WARNING, ERROR }
 377 notification;
 378
 379 /* This is returned by notify_std and several io functions.  */
 380 typedef enum
 381 { SUCCESS = 1, FAILURE }
 382 try;
 383
 384 /* The filename and line number don't go inside the globals structure.
 385    They are set by the rest of the program and must be linked to.  */
 386
 387 /* Location of the current library call (optional).  */
 388 extern unsigned line;
 389 iexport_data_proto(line);
 390
 391 extern char *filename;
 392 iexport_data_proto(filename);
 393
 394 /* Avoid conflicting prototypes of alloca() in system headers by using
 395    GCC's builtin alloca().  */
 396 #define gfc_alloca(x)  __builtin_alloca(x)
 397
 398
 399 /* Directory for creating temporary files.  Only used when none of the
 400    following environment variables exist: GFORTRAN_TMPDIR, TMP and TEMP.  */
 401 #define DEFAULT_TEMPDIR "/tmp"
 402
 403 /* The default value of record length for preconnected units is defined
 404    here. This value can be overriden by an environment variable.
 405    Default value is 1 Gb.  */
 406 #define DEFAULT_RECL 1073741824
 407
 408
 409 #define CHARACTER2(name) \
 410               gfc_charlen_type name ## _len; \
 411               char * name
 412
 413 typedef struct st_parameter_common
 414 {
 415   GFC_INTEGER_4 flags;
 416   GFC_INTEGER_4 unit;
 417   const char *filename;
 418   GFC_INTEGER_4 line;
 419   CHARACTER2 (iomsg);
 420   GFC_INTEGER_4 *iostat;
 421 }
 422 st_parameter_common;
 423
 424 #undef CHARACTER2
 425
 426 #define IOPARM_LIBRETURN_MASK           (3 << 0)
 427 #define IOPARM_LIBRETURN_OK             (0 << 0)
 428 #define IOPARM_LIBRETURN_ERROR          (1 << 0)
 429 #define IOPARM_LIBRETURN_END            (2 << 0)
 430 #define IOPARM_LIBRETURN_EOR            (3 << 0)
 431 #define IOPARM_ERR                      (1 << 2)
 432 #define IOPARM_END                      (1 << 3)
 433 #define IOPARM_EOR                      (1 << 4)
 434 #define IOPARM_HAS_IOSTAT               (1 << 5)
 435 #define IOPARM_HAS_IOMSG                (1 << 6)
 436
 437 #define IOPARM_COMMON_MASK              ((1 << 7) - 1)
 438
 439 #define IOPARM_OPEN_HAS_RECL_IN         (1 << 7)
 440 #define IOPARM_OPEN_HAS_FILE            (1 << 8)
 441 #define IOPARM_OPEN_HAS_STATUS          (1 << 9)
 442 #define IOPARM_OPEN_HAS_ACCESS          (1 << 10)
 443 #define IOPARM_OPEN_HAS_FORM            (1 << 11)
 444 #define IOPARM_OPEN_HAS_BLANK           (1 << 12)
 445 #define IOPARM_OPEN_HAS_POSITION        (1 << 13)
 446 #define IOPARM_OPEN_HAS_ACTION          (1 << 14)
 447 #define IOPARM_OPEN_HAS_DELIM           (1 << 15)
 448 #define IOPARM_OPEN_HAS_PAD             (1 << 16)
 449 #define IOPARM_OPEN_HAS_CONVERT         (1 << 17)
 450
 451 /* library start function and end macro.  These can be expanded if needed
 452    in the future.  cmp is st_parameter_common *cmp  */
 453
 454 extern void library_start (st_parameter_common *);
 455 internal_proto(library_start);
 456
 457 #define library_end()
 458
 459 /* main.c */
 460
 461 extern void stupid_function_name_for_static_linking (void);
 462 internal_proto(stupid_function_name_for_static_linking);
 463
 464 extern void set_args (int, char **);
 465 export_proto(set_args);
 466
 467 extern void get_args (int *, char ***);
 468 internal_proto(get_args);
 469
 470 extern void store_exe_path (const char *);
 471 export_proto(store_exe_path);
 472
 473 extern char * full_exe_path (void);
 474 internal_proto(full_exe_path);
 475
 476 /* backtrace.c */
 477
 478 extern void show_backtrace (void);
 479 internal_proto(show_backtrace);
 480
 481 /* error.c */
 482
 483 #define GFC_ITOA_BUF_SIZE (sizeof (GFC_INTEGER_LARGEST) * 3 + 2)
 484 #define GFC_XTOA_BUF_SIZE (sizeof (GFC_UINTEGER_LARGEST) * 2 + 1)
 485 #define GFC_OTOA_BUF_SIZE (sizeof (GFC_INTEGER_LARGEST) * 3 + 1)
 486 #define GFC_BTOA_BUF_SIZE (sizeof (GFC_INTEGER_LARGEST) * 8 + 1)
 487
 488 extern void sys_exit (int) __attribute__ ((noreturn));
 489 internal_proto(sys_exit);
 490
 491 extern const char *gfc_itoa (GFC_INTEGER_LARGEST, char *, size_t);
 492 internal_proto(gfc_itoa);
 493
 494 extern const char *xtoa (GFC_UINTEGER_LARGEST, char *, size_t);
 495 internal_proto(xtoa);
 496
 497 extern void os_error (const char *) __attribute__ ((noreturn));
 498 iexport_proto(os_error);
 499
 500 extern void show_locus (st_parameter_common *);
 501 internal_proto(show_locus);
 502
 503 extern void runtime_error (const char *, ...)
 504      __attribute__ ((noreturn, format (printf, 1, 2)));
 505 iexport_proto(runtime_error);
 506
 507 extern void runtime_error_at (const char *, const char *, ...)
 508      __attribute__ ((noreturn, format (printf, 2, 3)));
 509 iexport_proto(runtime_error_at);
 510
 511 extern void internal_error (st_parameter_common *, const char *)
 512   __attribute__ ((noreturn));
 513 internal_proto(internal_error);
 514
 515 extern const char *get_oserror (void);
 516 internal_proto(get_oserror);
 517
 518 extern const char *translate_error (int);
 519 internal_proto(translate_error);
 520
 521 extern void generate_error (st_parameter_common *, int, const char *);
 522 iexport_proto(generate_error);
 523
 524 extern try notify_std (st_parameter_common *, int, const char *);
 525 internal_proto(notify_std);
 526
 527 extern notification notification_std(int);
 528 internal_proto(notification_std);
 529
 530 /* fpu.c */
 531
 532 extern void set_fpu (void);
 533 internal_proto(set_fpu);
 534
 535 /* memory.c */
 536
 537 extern void *get_mem (size_t) __attribute__ ((malloc));
 538 internal_proto(get_mem);
 539
 540 extern void free_mem (void *);
 541 internal_proto(free_mem);
 542
 543 extern void *internal_malloc_size (size_t) __attribute__ ((malloc));
 544 internal_proto(internal_malloc_size);
 545
 546 /* environ.c */
 547
 548 extern int check_buffered (int);
 549 internal_proto(check_buffered);
 550
 551 extern void init_variables (void);
 552 internal_proto(init_variables);
 553
 554 extern void show_variables (void);
 555 internal_proto(show_variables);
 556
 557 unit_convert get_unformatted_convert (int);
 558 internal_proto(get_unformatted_convert);
 559
 560 /* string.c */
 561
 562 extern int find_option (st_parameter_common *, const char *, gfc_charlen_type,
 563                         const st_option *, const char *);
 564 internal_proto(find_option);
 565
 566 extern gfc_charlen_type fstrlen (const char *, gfc_charlen_type);
 567 internal_proto(fstrlen);
 568
 569 extern gfc_charlen_type fstrcpy (char *, gfc_charlen_type, const char *, gfc_charlen_type);
 570 internal_proto(fstrcpy);
 571
 572 extern gfc_charlen_type cf_strcpy (char *, gfc_charlen_type, const char *);
 573 internal_proto(cf_strcpy);
 574
 575 /* io/intrinsics.c */
 576
 577 extern void flush_all_units (void);
 578 internal_proto(flush_all_units);
 579
 580 /* io.c */
 581
 582 extern void init_units (void);
 583 internal_proto(init_units);
 584
 585 extern void close_units (void);
 586 internal_proto(close_units);
 587
 588 extern int unit_to_fd (int);
 589 internal_proto(unit_to_fd);
 590
 591 extern int st_printf (const char *, ...)
 592   __attribute__ ((format (printf, 1, 2)));
 593 internal_proto(st_printf);
 594
 595 extern int st_vprintf (const char *, va_list);
 596 internal_proto(st_vprintf);
 597
 598 extern char * filename_from_unit (int);
 599 internal_proto(filename_from_unit);
 600
 601 /* stop.c */
 602
 603 extern void stop_numeric (GFC_INTEGER_4) __attribute__ ((noreturn));
 604 iexport_proto(stop_numeric);
 605
 606 /* reshape_packed.c */
 607
 608 extern void reshape_packed (char *, index_type, const char *, index_type,
 609                             const char *, index_type);
 610 internal_proto(reshape_packed);
 611
 612 /* Repacking functions.  */
 613
 614 /* ??? These aren't currently used by the compiler, though we
 615    certainly could do so.  */
 616 GFC_INTEGER_4 *internal_pack_4 (gfc_array_i4 *);
 617 internal_proto(internal_pack_4);
 618
 619 GFC_INTEGER_8 *internal_pack_8 (gfc_array_i8 *);
 620 internal_proto(internal_pack_8);
 621
 622 #if defined HAVE_GFC_INTEGER_16
 623 GFC_INTEGER_16 *internal_pack_16 (gfc_array_i16 *);
 624 internal_proto(internal_pack_16);
 625 #endif
 626
 627 GFC_COMPLEX_4 *internal_pack_c4 (gfc_array_c4 *);
 628 internal_proto(internal_pack_c4);
 629
 630 GFC_COMPLEX_8 *internal_pack_c8 (gfc_array_c8 *);
 631 internal_proto(internal_pack_c8);
 632
 633 #if defined HAVE_GFC_COMPLEX_10
 634 GFC_COMPLEX_10 *internal_pack_c10 (gfc_array_c10 *);
 635 internal_proto(internal_pack_c10);
 636 #endif
 637
 638 extern void internal_unpack_4 (gfc_array_i4 *, const GFC_INTEGER_4 *);
 639 internal_proto(internal_unpack_4);
 640
 641 extern void internal_unpack_8 (gfc_array_i8 *, const GFC_INTEGER_8 *);
 642 internal_proto(internal_unpack_8);
 643
 644 #if defined HAVE_GFC_INTEGER_16
 645 extern void internal_unpack_16 (gfc_array_i16 *, const GFC_INTEGER_16 *);
 646 internal_proto(internal_unpack_16);
 647 #endif
 648
 649 extern void internal_unpack_c4 (gfc_array_c4 *, const GFC_COMPLEX_4 *);
 650 internal_proto(internal_unpack_c4);
 651
 652 extern void internal_unpack_c8 (gfc_array_c8 *, const GFC_COMPLEX_8 *);
 653 internal_proto(internal_unpack_c8);
 654
 655 #if defined HAVE_GFC_COMPLEX_10
 656 extern void internal_unpack_c10 (gfc_array_c10 *, const GFC_COMPLEX_10 *);
 657 internal_proto(internal_unpack_c10);
 658 #endif
 659
 660 #if defined HAVE_GFC_COMPLEX_16
 661 extern void internal_unpack_c16 (gfc_array_c16 *, const GFC_COMPLEX_16 *);
 662 internal_proto(internal_unpack_c16);
 663 #endif
 664
 665 /* string_intrinsics.c */
 666
 667 extern int compare_string (GFC_INTEGER_4, const char *,
 668                            GFC_INTEGER_4, const char *);
 669 iexport_proto(compare_string);
 670
 671 /* random.c */
 672
 673 extern void random_seed_i4 (GFC_INTEGER_4 * size, gfc_array_i4 * put,
 674                             gfc_array_i4 * get);
 675 iexport_proto(random_seed_i4);
 676 extern void random_seed_i8 (GFC_INTEGER_8 * size, gfc_array_i8 * put,
 677                             gfc_array_i8 * get);
 678 iexport_proto(random_seed_i8);
 679
 680 /* size.c */
 681
 682 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, void) array_t;
 683
 684 extern index_type size0 (const array_t * array);
 685 iexport_proto(size0);
 686
 687 #endif  /* LIBGFOR_H  */