libgfortran/libgfortran.h

   1 /* Common declarations for all of libgfortran.
   2    Copyright (C) 2002, 2003, 2004, 2005, 2006 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 #include <math.h>
  35 #include <stddef.h>
  36 #include <float.h>
  37
  38 #ifndef M_PI
  39 #define M_PI 3.14159265358979323846264338327
  40 #endif
  41
  42 #if HAVE_COMPLEX_H
  43 # include <complex.h>
  44 #else
  45 #define complex __complex__
  46 #endif
  47
  48 #include "config.h"
  49 #include "c99_protos.h"
  50
  51 #if HAVE_IEEEFP_H
  52 #include <ieeefp.h>
  53 #endif
  54
  55 #include "gstdint.h"
  56
  57 #if HAVE_SYS_TYPES_H
  58 #include <sys/types.h>
  59 #endif
  60 typedef off_t gfc_offset;
  61
  62 #ifndef NULL
  63 #define NULL (void *) 0
  64 #endif
  65
  66 #ifndef __GNUC__
  67 #define __attribute__(x)
  68 #endif
  69
  70 /* For a library, a standard prefix is a requirement in order to partition
  71    the namespace.  IPREFIX is for symbols intended to be internal to the
  72    library.  */
  73 #define PREFIX(x)       _gfortran_ ## x
  74 #define IPREFIX(x)      _gfortrani_ ## x
  75
  76 /* Magic to rename a symbol at the compiler level.  You continue to refer
  77    to the symbol as OLD in the source, but it'll be named NEW in the asm.  */
  78 #define sym_rename(old, new) sym_rename1(old, __USER_LABEL_PREFIX__, new)
  79 #define sym_rename1(old, ulp, new) sym_rename2(old, ulp, new)
  80 #define sym_rename2(old, ulp, new) extern __typeof(old) old __asm__(#ulp #new)
  81
  82 /* There are several classifications of routines:
  83
  84      (1) Symbols used only within the library,
  85      (2) Symbols to be exported from the library,
  86      (3) Symbols to be exported from the library, but
  87          also used inside the library.
  88
  89    By telling the compiler about these different classifications we can
  90    tightly control the interface seen by the user, and get better code
  91    from the compiler at the same time.
  92
  93    One of the following should be used immediately after the declaration
  94    of each symbol:
  95
  96      internal_proto     Marks a symbol used only within the library,
  97                         and adds IPREFIX to the assembly-level symbol
  98                         name.  The later is important for maintaining
  99                         the namespace partition for the static library.
 100
 101      export_proto       Marks a symbol to be exported, and adds PREFIX
 102                         to the assembly-level symbol name.
 103
 104      export_proto_np    Marks a symbol to be exported without adding PREFIX.
 105
 106      iexport_proto      Marks a function to be exported, but with the
 107                         understanding that it can be used inside as well.
 108
 109      iexport_data_proto Similarly, marks a data symbol to be exported.
 110                         Unfortunately, some systems can't play the hidden
 111                         symbol renaming trick on data symbols, thanks to
 112                         the horribleness of COPY relocations.
 113
 114    If iexport_proto or iexport_data_proto is used, you must also use
 115    iexport or iexport_data after the *definition* of the symbol.  */
 116
 117 #if defined(HAVE_ATTRIBUTE_VISIBILITY)
 118 # define internal_proto(x) \
 119         sym_rename(x, IPREFIX (x)) __attribute__((__visibility__("hidden")))
 120 #else
 121 # define internal_proto(x)      sym_rename(x, IPREFIX(x))
 122 #endif
 123
 124 #if defined(HAVE_ATTRIBUTE_VISIBILITY) && defined(HAVE_ATTRIBUTE_ALIAS)
 125 # define export_proto(x)        sym_rename(x, PREFIX(x))
 126 # define export_proto_np(x)     extern char swallow_semicolon
 127 # define iexport_proto(x)       internal_proto(x)
 128 # define iexport(x)             iexport1(x, __USER_LABEL_PREFIX__, IPREFIX(x))
 129 # define iexport1(x,p,y)        iexport2(x,p,y)
 130 # define iexport2(x,p,y) \
 131         extern __typeof(x) PREFIX(x) __attribute__((__alias__(#p #y)))
 132 /* ??? We're not currently building a dll, and it's wrong to add dllexport
 133    to objects going into a static library archive.  */
 134 #elif 0 && defined(HAVE_ATTRIBUTE_DLLEXPORT)
 135 # define export_proto_np(x)     extern __typeof(x) x __attribute__((dllexport))
 136 # define export_proto(x)    sym_rename(x, PREFIX(x)) __attribute__((dllexport))
 137 # define iexport_proto(x)       export_proto(x)
 138 # define iexport(x)             extern char swallow_semicolon
 139 #else
 140 # define export_proto(x)        sym_rename(x, PREFIX(x))
 141 # define export_proto_np(x)     extern char swallow_semicolon
 142 # define iexport_proto(x)       export_proto(x)
 143 # define iexport(x)             extern char swallow_semicolon
 144 #endif
 145
 146 /* TODO: detect the case when we *can* hide the symbol.  */
 147 #define iexport_data_proto(x)   export_proto(x)
 148 #define iexport_data(x)         extern char swallow_semicolon
 149
 150 /* The only reliable way to get the offset of a field in a struct
 151    in a system independent way is via this macro.  */
 152 #ifndef offsetof
 153 #define offsetof(TYPE, MEMBER)  ((size_t) &((TYPE *) 0)->MEMBER)
 154 #endif
 155
 156 /* The isfinite macro is only available with C99, but some non-C99
 157    systems still provide fpclassify, and there is a `finite' function
 158    in BSD.
 159
 160    Also, isfinite is broken on Cygwin.
 161
 162    When isfinite is not available, try to use one of the
 163    alternatives, or bail out.  */
 164
 165 #if defined(HAVE_BROKEN_ISFINITE) || defined(__CYGWIN__)
 166 #undef isfinite
 167 #endif
 168
 169 #if defined(HAVE_BROKEN_ISNAN)
 170 #undef isnan
 171 #endif
 172
 173 #if defined(HAVE_BROKEN_FPCLASSIFY)
 174 #undef fpclassify
 175 #endif
 176
 177 #if !defined(isfinite)
 178 #if !defined(fpclassify)
 179 #define isfinite(x) ((x) - (x) == 0)
 180 #else
 181 #define isfinite(x) (fpclassify(x) != FP_NAN && fpclassify(x) != FP_INFINITE)
 182 #endif /* !defined(fpclassify) */
 183 #endif /* !defined(isfinite)  */
 184
 185 #if !defined(isnan)
 186 #if !defined(fpclassify)
 187 #define isnan(x) ((x) != (x))
 188 #else
 189 #define isnan(x) (fpclassify(x) == FP_NAN)
 190 #endif /* !defined(fpclassify) */
 191 #endif /* !defined(isfinite)  */
 192
 193 /* TODO: find the C99 version of these an move into above ifdef.  */
 194 #define REALPART(z) (__real__(z))
 195 #define IMAGPART(z) (__imag__(z))
 196 #define COMPLEX_ASSIGN(z_, r_, i_) {__real__(z_) = (r_); __imag__(z_) = (i_);}
 197
 198 #include "kinds.h"
 199
 200 /* Define the type used for the current record number for large file I/O.
 201    The size must be consistent with the size defined on the compiler side.  */
 202 #ifdef HAVE_GFC_INTEGER_8
 203 typedef GFC_INTEGER_8 GFC_IO_INT;
 204 #else
 205 #ifdef HAVE_GFC_INTEGER_4
 206 typedef GFC_INTEGER_4 GFC_IO_INT;
 207 #else
 208 #error "GFC_INTEGER_4 should be available for the library to compile".
 209 #endif
 210 #endif
 211
 212 /* The following two definitions must be consistent with the types used
 213    by the compiler.  */
 214 /* The type used of array indices, amongst other things.  */
 215 typedef ssize_t index_type;
 216 /* The type used for the lengths of character variables.  */
 217 typedef GFC_INTEGER_4 gfc_charlen_type;
 218
 219 /* This will be 0 on little-endian machines and one on big-endian machines.  */
 220 extern int l8_to_l4_offset;
 221 internal_proto(l8_to_l4_offset);
 222
 223 #define GFOR_POINTER_L8_TO_L4(p8) \
 224   (l8_to_l4_offset + (GFC_LOGICAL_4 *)(p8))
 225
 226 #define GFC_INTEGER_4_HUGE \
 227   (GFC_INTEGER_4)((((GFC_UINTEGER_4)1) << 31) - 1)
 228 #define GFC_INTEGER_8_HUGE \
 229   (GFC_INTEGER_8)((((GFC_UINTEGER_8)1) << 63) - 1)
 230 #ifdef HAVE_GFC_INTEGER_16
 231 #define GFC_INTEGER_16_HUGE \
 232   (GFC_INTEGER_16)((((GFC_UINTEGER_16)1) << 127) - 1)
 233 #endif
 234
 235 #define GFC_REAL_4_HUGE FLT_MAX
 236 #define GFC_REAL_8_HUGE DBL_MAX
 237 #ifdef HAVE_GFC_REAL_10
 238 #define GFC_REAL_10_HUGE LDBL_MAX
 239 #endif
 240 #ifdef HAVE_GFC_REAL_16
 241 #define GFC_REAL_16_HUGE LDBL_MAX
 242 #endif
 243
 244 #define GFC_REAL_4_DIGITS FLT_MANT_DIG
 245 #define GFC_REAL_8_DIGITS DBL_MANT_DIG
 246 #ifdef HAVE_GFC_REAL_10
 247 #define GFC_REAL_10_DIGITS LDBL_MANT_DIG
 248 #endif
 249 #ifdef HAVE_GFC_REAL_16
 250 #define GFC_REAL_16_DIGITS LDBL_MANT_DIG
 251 #endif
 252
 253 #define GFC_REAL_4_RADIX FLT_RADIX
 254 #define GFC_REAL_8_RADIX FLT_RADIX
 255 #ifdef HAVE_GFC_REAL_10
 256 #define GFC_REAL_10_RADIX FLT_RADIX
 257 #endif
 258 #ifdef HAVE_GFC_REAL_16
 259 #define GFC_REAL_16_RADIX FLT_RADIX
 260 #endif
 261
 262 #ifndef GFC_MAX_DIMENSIONS
 263 #define GFC_MAX_DIMENSIONS 7
 264 #endif
 265
 266 typedef struct descriptor_dimension
 267 {
 268   index_type stride;
 269   index_type lbound;
 270   index_type ubound;
 271 }
 272 descriptor_dimension;
 273
 274 #define GFC_ARRAY_DESCRIPTOR(r, type) \
 275 struct {\
 276   type *data;\
 277   size_t offset;\
 278   index_type dtype;\
 279   descriptor_dimension dim[r];\
 280 }
 281
 282 /* Commonly used array descriptor types.  */
 283 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, void) gfc_array_void;
 284 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, char) gfc_array_char;
 285 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_INTEGER_4) gfc_array_i4;
 286 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_INTEGER_8) gfc_array_i8;
 287 #ifdef HAVE_GFC_INTEGER_16
 288 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_INTEGER_16) gfc_array_i16;
 289 #endif
 290 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_REAL_4) gfc_array_r4;
 291 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_REAL_8) gfc_array_r8;
 292 #ifdef HAVE_GFC_REAL_10
 293 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_REAL_10) gfc_array_r10;
 294 #endif
 295 #ifdef HAVE_GFC_REAL_16
 296 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_REAL_16) gfc_array_r16;
 297 #endif
 298 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_COMPLEX_4) gfc_array_c4;
 299 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_COMPLEX_8) gfc_array_c8;
 300 #ifdef HAVE_GFC_COMPLEX_10
 301 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_COMPLEX_10) gfc_array_c10;
 302 #endif
 303 #ifdef HAVE_GFC_COMPLEX_16
 304 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_COMPLEX_16) gfc_array_c16;
 305 #endif
 306 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_LOGICAL_4) gfc_array_l4;
 307 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_LOGICAL_8) gfc_array_l8;
 308 #ifdef HAVE_GFC_LOGICAL_16
 309 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_LOGICAL_16) gfc_array_l16;
 310 #endif
 311
 312 #define GFC_DTYPE_RANK_MASK 0x07
 313 #define GFC_DTYPE_TYPE_SHIFT 3
 314 #define GFC_DTYPE_TYPE_MASK 0x38
 315 #define GFC_DTYPE_SIZE_SHIFT 6
 316
 317 enum
 318 {
 319   GFC_DTYPE_UNKNOWN = 0,
 320   GFC_DTYPE_INTEGER,
 321   /* TODO: recognize logical types.  */
 322   GFC_DTYPE_LOGICAL,
 323   GFC_DTYPE_REAL,
 324   GFC_DTYPE_COMPLEX,
 325   GFC_DTYPE_DERIVED,
 326   GFC_DTYPE_CHARACTER
 327 };
 328
 329 #define GFC_DESCRIPTOR_RANK(desc) ((desc)->dtype & GFC_DTYPE_RANK_MASK)
 330 #define GFC_DESCRIPTOR_TYPE(desc) (((desc)->dtype & GFC_DTYPE_TYPE_MASK) \
 331                                    >> GFC_DTYPE_TYPE_SHIFT)
 332 #define GFC_DESCRIPTOR_SIZE(desc) ((desc)->dtype >> GFC_DTYPE_SIZE_SHIFT)
 333 #define GFC_DESCRIPTOR_DATA(desc) ((desc)->data)
 334 #define GFC_DESCRIPTOR_DTYPE(desc) ((desc)->dtype)
 335
 336 /* Runtime library include.  */
 337 #define stringize(x) expand_macro(x)
 338 #define expand_macro(x) # x
 339
 340 /* Runtime options structure.  */
 341
 342 typedef struct
 343 {
 344   int stdin_unit, stdout_unit, stderr_unit, optional_plus;
 345   int allocate_init_flag, allocate_init_value;
 346   int locus;
 347
 348   int separator_len;
 349   const char *separator;
 350
 351   int mem_check;
 352   int use_stderr, all_unbuffered, default_recl;
 353
 354   int fpu_round, fpu_precision, fpe;
 355
 356   int sighup, sigint;
 357 }
 358 options_t;
 359
 360 extern options_t options;
 361 internal_proto(options);
 362
 363
 364 /* Compile-time options that will influence the library.  */
 365
 366 typedef struct
 367 {
 368   int warn_std;
 369   int allow_std;
 370   int pedantic;
 371   int convert;
 372   size_t record_marker;
 373 }
 374 compile_options_t;
 375
 376 extern compile_options_t compile_options;
 377 internal_proto(compile_options);
 378
 379 extern void init_compile_options (void);
 380 internal_proto(init_compile_options);
 381
 382
 383 /* Structure for statement options.  */
 384
 385 typedef struct
 386 {
 387   const char *name;
 388   int value;
 389 }
 390 st_option;
 391
 392 /* Runtime errors.  The EOR and EOF errors are required to be negative.  */
 393
 394 typedef enum
 395 {
 396   ERROR_FIRST = -3,             /* Marker for the first error.  */
 397   ERROR_EOR = -2,
 398   ERROR_END = -1,
 399   ERROR_OK = 0,                 /* Indicates success, must be zero.  */
 400   ERROR_OS = 5000,              /* Operating system error, more info in errno.  */
 401   ERROR_OPTION_CONFLICT,
 402   ERROR_BAD_OPTION,
 403   ERROR_MISSING_OPTION,
 404   ERROR_ALREADY_OPEN,
 405   ERROR_BAD_UNIT,
 406   ERROR_FORMAT,
 407   ERROR_BAD_ACTION,
 408   ERROR_ENDFILE,
 409   ERROR_BAD_US,
 410   ERROR_READ_VALUE,
 411   ERROR_READ_OVERFLOW,
 412   ERROR_INTERNAL,
 413   ERROR_INTERNAL_UNIT,
 414   ERROR_ALLOCATION,
 415   ERROR_DIRECT_EOR,
 416   ERROR_SHORT_RECORD,
 417   ERROR_LAST                    /* Not a real error, the last error # + 1.  */
 418 }
 419 error_codes;
 420
 421
 422 /* Flags to specify which standard/extension contains a feature.
 423    Keep them in sync with their counterparts in gcc/fortran/gfortran.h.  */
 424 #define GFC_STD_LEGACY          (1<<6) /* Backward compatibility.  */
 425 #define GFC_STD_GNU             (1<<5)    /* GNU Fortran extension.  */
 426 #define GFC_STD_F2003           (1<<4)    /* New in F2003.  */
 427 /* Note that no features were obsoleted nor deleted in F2003.  */
 428 #define GFC_STD_F95             (1<<3)    /* New in F95.  */
 429 #define GFC_STD_F95_DEL         (1<<2)    /* Deleted in F95.  */
 430 #define GFC_STD_F95_OBS         (1<<1)    /* Obsoleted in F95.  */
 431 #define GFC_STD_F77             (1<<0)    /* Up to and including F77.  */
 432
 433 /* Bitmasks for the various FPE that can be enabled.
 434    Keep them in sync with their counterparts in gcc/fortran/gfortran.h.  */
 435 #define GFC_FPE_INVALID    (1<<0)
 436 #define GFC_FPE_DENORMAL   (1<<1)
 437 #define GFC_FPE_ZERO       (1<<2)
 438 #define GFC_FPE_OVERFLOW   (1<<3)
 439 #define GFC_FPE_UNDERFLOW  (1<<4)
 440 #define GFC_FPE_PRECISION  (1<<5)
 441
 442 /* This is returned by notification_std to know if, given the flags
 443    that were given (-std=, -pedantic) we should issue an error, a warning
 444    or nothing.  */
 445 typedef enum
 446 { SILENT, WARNING, ERROR }
 447 notification;
 448
 449 /* This is returned by notify_std and several io functions.  */
 450 typedef enum
 451 { SUCCESS = 1, FAILURE }
 452 try;
 453
 454 /* The filename and line number don't go inside the globals structure.
 455    They are set by the rest of the program and must be linked to.  */
 456
 457 /* Location of the current library call (optional).  */
 458 extern unsigned line;
 459 iexport_data_proto(line);
 460
 461 extern char *filename;
 462 iexport_data_proto(filename);
 463
 464 /* Avoid conflicting prototypes of alloca() in system headers by using
 465    GCC's builtin alloca().  */
 466 #define gfc_alloca(x)  __builtin_alloca(x)
 467
 468
 469 /* main.c */
 470
 471 extern void stupid_function_name_for_static_linking (void);
 472 internal_proto(stupid_function_name_for_static_linking);
 473
 474 struct st_parameter_common;
 475 extern void library_start (struct st_parameter_common *);
 476 internal_proto(library_start);
 477
 478 #define library_end()
 479
 480 extern void set_args (int, char **);
 481 export_proto(set_args);
 482
 483 extern void get_args (int *, char ***);
 484 internal_proto(get_args);
 485
 486 /* error.c */
 487
 488 #define GFC_ITOA_BUF_SIZE (sizeof (GFC_INTEGER_LARGEST) * 3 + 2)
 489 #define GFC_XTOA_BUF_SIZE (sizeof (GFC_UINTEGER_LARGEST) * 2 + 1)
 490 #define GFC_OTOA_BUF_SIZE (sizeof (GFC_INTEGER_LARGEST) * 3 + 1)
 491 #define GFC_BTOA_BUF_SIZE (sizeof (GFC_INTEGER_LARGEST) * 8 + 1)
 492
 493 extern const char *gfc_itoa (GFC_INTEGER_LARGEST, char *, size_t);
 494 internal_proto(gfc_itoa);
 495
 496 extern const char *xtoa (GFC_UINTEGER_LARGEST, char *, size_t);
 497 internal_proto(xtoa);
 498
 499 extern void os_error (const char *) __attribute__ ((noreturn));
 500 internal_proto(os_error);
 501
 502 extern void show_locus (struct st_parameter_common *);
 503 internal_proto(show_locus);
 504
 505 extern void runtime_error (const char *) __attribute__ ((noreturn));
 506 iexport_proto(runtime_error);
 507
 508 extern void internal_error (struct st_parameter_common *, const char *)
 509   __attribute__ ((noreturn));
 510 internal_proto(internal_error);
 511
 512 extern const char *get_oserror (void);
 513 internal_proto(get_oserror);
 514
 515 extern void sys_exit (int) __attribute__ ((noreturn));
 516 internal_proto(sys_exit);
 517
 518 extern int st_printf (const char *, ...)
 519   __attribute__ ((format (printf, 1, 2)));
 520 internal_proto(st_printf);
 521
 522 extern void st_sprintf (char *, const char *, ...)
 523   __attribute__ ((format (printf, 2, 3)));
 524 internal_proto(st_sprintf);
 525
 526 extern const char *translate_error (int);
 527 internal_proto(translate_error);
 528
 529 extern void generate_error (struct st_parameter_common *, int, const char *);
 530 internal_proto(generate_error);
 531
 532 extern try notify_std (struct st_parameter_common *, int, const char *);
 533 internal_proto(notify_std);
 534
 535 /* fpu.c */
 536
 537 extern void set_fpu (void);
 538 internal_proto(set_fpu);
 539
 540 /* memory.c */
 541
 542 extern void *get_mem (size_t) __attribute__ ((malloc));
 543 internal_proto(get_mem);
 544
 545 extern void free_mem (void *);
 546 internal_proto(free_mem);
 547
 548 extern void *internal_malloc_size (size_t);
 549 internal_proto(internal_malloc_size);
 550
 551 extern void internal_free (void *);
 552 iexport_proto(internal_free);
 553
 554 /* environ.c */
 555
 556 extern int check_buffered (int);
 557 internal_proto(check_buffered);
 558
 559 extern void init_variables (void);
 560 internal_proto(init_variables);
 561
 562 extern void show_variables (void);
 563 internal_proto(show_variables);
 564
 565 /* string.c */
 566
 567 extern int find_option (struct st_parameter_common *, const char *, int,
 568                         const st_option *, const char *);
 569 internal_proto(find_option);
 570
 571 extern int fstrlen (const char *, int);
 572 internal_proto(fstrlen);
 573
 574 extern void fstrcpy (char *, int, const char *, int);
 575 internal_proto(fstrcpy);
 576
 577 extern void cf_strcpy (char *, int, const char *);
 578 internal_proto(cf_strcpy);
 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 /* stop.c */
 592
 593 extern void stop_numeric (GFC_INTEGER_4);
 594 iexport_proto(stop_numeric);
 595
 596 /* reshape_packed.c */
 597
 598 extern void reshape_packed (char *, index_type, const char *, index_type,
 599                             const char *, index_type);
 600 internal_proto(reshape_packed);
 601
 602 /* Repacking functions.  */
 603
 604 /* ??? These aren't currently used by the compiler, though we
 605    certainly could do so.  */
 606 GFC_INTEGER_4 *internal_pack_4 (gfc_array_i4 *);
 607 internal_proto(internal_pack_4);
 608
 609 GFC_INTEGER_8 *internal_pack_8 (gfc_array_i8 *);
 610 internal_proto(internal_pack_8);
 611
 612 #if defined HAVE_GFC_INTEGER_16
 613 GFC_INTEGER_16 *internal_pack_16 (gfc_array_i16 *);
 614 internal_proto(internal_pack_16);
 615 #endif
 616
 617 GFC_COMPLEX_4 *internal_pack_c4 (gfc_array_c4 *);
 618 internal_proto(internal_pack_c4);
 619
 620 GFC_COMPLEX_8 *internal_pack_c8 (gfc_array_c8 *);
 621 internal_proto(internal_pack_c8);
 622
 623 #if defined HAVE_GFC_COMPLEX_10
 624 GFC_COMPLEX_10 *internal_pack_c10 (gfc_array_c10 *);
 625 internal_proto(internal_pack_c10);
 626 #endif
 627
 628 extern void internal_unpack_4 (gfc_array_i4 *, const GFC_INTEGER_4 *);
 629 internal_proto(internal_unpack_4);
 630
 631 extern void internal_unpack_8 (gfc_array_i8 *, const GFC_INTEGER_8 *);
 632 internal_proto(internal_unpack_8);
 633
 634 #if defined HAVE_GFC_INTEGER_16
 635 extern void internal_unpack_16 (gfc_array_i16 *, const GFC_INTEGER_16 *);
 636 internal_proto(internal_unpack_16);
 637 #endif
 638
 639 extern void internal_unpack_c4 (gfc_array_c4 *, const GFC_COMPLEX_4 *);
 640 internal_proto(internal_unpack_c4);
 641
 642 extern void internal_unpack_c8 (gfc_array_c8 *, const GFC_COMPLEX_8 *);
 643 internal_proto(internal_unpack_c8);
 644
 645 #if defined HAVE_GFC_COMPLEX_10
 646 extern void internal_unpack_c10 (gfc_array_c10 *, const GFC_COMPLEX_10 *);
 647 internal_proto(internal_unpack_c10);
 648 #endif
 649
 650 #if defined HAVE_GFC_COMPLEX_16
 651 extern void internal_unpack_c16 (gfc_array_c16 *, const GFC_COMPLEX_16 *);
 652 internal_proto(internal_unpack_c16);
 653 #endif
 654
 655 /* string_intrinsics.c */
 656
 657 extern GFC_INTEGER_4 compare_string (GFC_INTEGER_4, const char *,
 658                                      GFC_INTEGER_4, const char *);
 659 iexport_proto(compare_string);
 660
 661 /* random.c */
 662
 663 extern void random_seed (GFC_INTEGER_4 * size, gfc_array_i4 * put,
 664                          gfc_array_i4 * get);
 665 iexport_proto(random_seed);
 666
 667 /* size.c */
 668
 669 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, void) array_t;
 670
 671 extern index_type size0 (const array_t * array);
 672 iexport_proto(size0);
 673
 674 #endif  /* LIBGFOR_H  */