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,                     /* 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_LAST                    /* Not a real error, the last error # + 1.  */
 417 }
 418 error_codes;
 419
 420
 421 /* Flags to specify which standard/extension contains a feature.
 422    Keep them in sync with their counterparts in gcc/fortran/gfortran.h.  */
 423 #define GFC_STD_LEGACY          (1<<6) /* Backward compatibility.  */
 424 #define GFC_STD_GNU             (1<<5)    /* GNU Fortran extension.  */
 425 #define GFC_STD_F2003           (1<<4)    /* New in F2003.  */
 426 /* Note that no features were obsoleted nor deleted in F2003.  */
 427 #define GFC_STD_F95             (1<<3)    /* New in F95.  */
 428 #define GFC_STD_F95_DEL         (1<<2)    /* Deleted in F95.  */
 429 #define GFC_STD_F95_OBS         (1<<1)    /* Obsoleted in F95.  */
 430 #define GFC_STD_F77             (1<<0)    /* Up to and including F77.  */
 431
 432 /* Bitmasks for the various FPE that can be enabled.
 433    Keep them in sync with their counterparts in gcc/fortran/gfortran.h.  */
 434 #define GFC_FPE_INVALID    (1<<0)
 435 #define GFC_FPE_DENORMAL   (1<<1)
 436 #define GFC_FPE_ZERO       (1<<2)
 437 #define GFC_FPE_OVERFLOW   (1<<3)
 438 #define GFC_FPE_UNDERFLOW  (1<<4)
 439 #define GFC_FPE_PRECISION  (1<<5)
 440
 441 /* This is returned by notification_std to know if, given the flags
 442    that were given (-std=, -pedantic) we should issue an error, a warning
 443    or nothing.  */
 444 typedef enum
 445 { SILENT, WARNING, ERROR }
 446 notification;
 447
 448 /* This is returned by notify_std and several io functions.  */
 449 typedef enum
 450 { SUCCESS = 1, FAILURE }
 451 try;
 452
 453 /* The filename and line number don't go inside the globals structure.
 454    They are set by the rest of the program and must be linked to.  */
 455
 456 /* Location of the current library call (optional).  */
 457 extern unsigned line;
 458 iexport_data_proto(line);
 459
 460 extern char *filename;
 461 iexport_data_proto(filename);
 462
 463 /* Avoid conflicting prototypes of alloca() in system headers by using
 464    GCC's builtin alloca().  */
 465 #define gfc_alloca(x)  __builtin_alloca(x)
 466
 467
 468 /* main.c */
 469
 470 extern void stupid_function_name_for_static_linking (void);
 471 internal_proto(stupid_function_name_for_static_linking);
 472
 473 struct st_parameter_common;
 474 extern void library_start (struct st_parameter_common *);
 475 internal_proto(library_start);
 476
 477 #define library_end()
 478
 479 extern void set_args (int, char **);
 480 export_proto(set_args);
 481
 482 extern void get_args (int *, char ***);
 483 internal_proto(get_args);
 484
 485 /* error.c */
 486
 487 #define GFC_ITOA_BUF_SIZE (sizeof (GFC_INTEGER_LARGEST) * 3 + 2)
 488 #define GFC_XTOA_BUF_SIZE (sizeof (GFC_UINTEGER_LARGEST) * 2 + 1)
 489 #define GFC_OTOA_BUF_SIZE (sizeof (GFC_INTEGER_LARGEST) * 3 + 1)
 490 #define GFC_BTOA_BUF_SIZE (sizeof (GFC_INTEGER_LARGEST) * 8 + 1)
 491
 492 extern const char *gfc_itoa (GFC_INTEGER_LARGEST, char *, size_t);
 493 internal_proto(gfc_itoa);
 494
 495 extern const char *xtoa (GFC_UINTEGER_LARGEST, char *, size_t);
 496 internal_proto(xtoa);
 497
 498 extern void os_error (const char *) __attribute__ ((noreturn));
 499 internal_proto(os_error);
 500
 501 extern void show_locus (struct st_parameter_common *);
 502 internal_proto(show_locus);
 503
 504 extern void runtime_error (const char *) __attribute__ ((noreturn));
 505 iexport_proto(runtime_error);
 506
 507 extern void internal_error (struct st_parameter_common *, const char *)
 508   __attribute__ ((noreturn));
 509 internal_proto(internal_error);
 510
 511 extern const char *get_oserror (void);
 512 internal_proto(get_oserror);
 513
 514 extern void sys_exit (int) __attribute__ ((noreturn));
 515 internal_proto(sys_exit);
 516
 517 extern int st_printf (const char *, ...)
 518   __attribute__ ((format (printf, 1, 2)));
 519 internal_proto(st_printf);
 520
 521 extern void st_sprintf (char *, const char *, ...)
 522   __attribute__ ((format (printf, 2, 3)));
 523 internal_proto(st_sprintf);
 524
 525 extern const char *translate_error (int);
 526 internal_proto(translate_error);
 527
 528 extern void generate_error (struct st_parameter_common *, int, const char *);
 529 internal_proto(generate_error);
 530
 531 extern try notify_std (struct st_parameter_common *, int, const char *);
 532 internal_proto(notify_std);
 533
 534 /* fpu.c */
 535
 536 extern void set_fpu (void);
 537 internal_proto(set_fpu);
 538
 539 /* memory.c */
 540
 541 extern void *get_mem (size_t) __attribute__ ((malloc));
 542 internal_proto(get_mem);
 543
 544 extern void free_mem (void *);
 545 internal_proto(free_mem);
 546
 547 extern void *internal_malloc_size (size_t);
 548 internal_proto(internal_malloc_size);
 549
 550 extern void internal_free (void *);
 551 iexport_proto(internal_free);
 552
 553 /* environ.c */
 554
 555 extern int check_buffered (int);
 556 internal_proto(check_buffered);
 557
 558 extern void init_variables (void);
 559 internal_proto(init_variables);
 560
 561 extern void show_variables (void);
 562 internal_proto(show_variables);
 563
 564 /* string.c */
 565
 566 extern int find_option (struct st_parameter_common *, const char *, int,
 567                         const st_option *, const char *);
 568 internal_proto(find_option);
 569
 570 extern int fstrlen (const char *, int);
 571 internal_proto(fstrlen);
 572
 573 extern void fstrcpy (char *, int, const char *, int);
 574 internal_proto(fstrcpy);
 575
 576 extern void cf_strcpy (char *, int, const char *);
 577 internal_proto(cf_strcpy);
 578
 579 /* io.c */
 580
 581 extern void init_units (void);
 582 internal_proto(init_units);
 583
 584 extern void close_units (void);
 585 internal_proto(close_units);
 586
 587 extern int unit_to_fd (int);
 588 internal_proto(unit_to_fd);
 589
 590 /* stop.c */
 591
 592 extern void stop_numeric (GFC_INTEGER_4);
 593 iexport_proto(stop_numeric);
 594
 595 /* reshape_packed.c */
 596
 597 extern void reshape_packed (char *, index_type, const char *, index_type,
 598                             const char *, index_type);
 599 internal_proto(reshape_packed);
 600
 601 /* Repacking functions.  */
 602
 603 /* ??? These aren't currently used by the compiler, though we
 604    certainly could do so.  */
 605 GFC_INTEGER_4 *internal_pack_4 (gfc_array_i4 *);
 606 internal_proto(internal_pack_4);
 607
 608 GFC_INTEGER_8 *internal_pack_8 (gfc_array_i8 *);
 609 internal_proto(internal_pack_8);
 610
 611 #if defined HAVE_GFC_INTEGER_16
 612 GFC_INTEGER_16 *internal_pack_16 (gfc_array_i16 *);
 613 internal_proto(internal_pack_16);
 614 #endif
 615
 616 GFC_COMPLEX_4 *internal_pack_c4 (gfc_array_c4 *);
 617 internal_proto(internal_pack_c4);
 618
 619 GFC_COMPLEX_8 *internal_pack_c8 (gfc_array_c8 *);
 620 internal_proto(internal_pack_c8);
 621
 622 #if defined HAVE_GFC_COMPLEX_10
 623 GFC_COMPLEX_10 *internal_pack_c10 (gfc_array_c10 *);
 624 internal_proto(internal_pack_c10);
 625 #endif
 626
 627 extern void internal_unpack_4 (gfc_array_i4 *, const GFC_INTEGER_4 *);
 628 internal_proto(internal_unpack_4);
 629
 630 extern void internal_unpack_8 (gfc_array_i8 *, const GFC_INTEGER_8 *);
 631 internal_proto(internal_unpack_8);
 632
 633 #if defined HAVE_GFC_INTEGER_16
 634 extern void internal_unpack_16 (gfc_array_i16 *, const GFC_INTEGER_16 *);
 635 internal_proto(internal_unpack_16);
 636 #endif
 637
 638 extern void internal_unpack_c4 (gfc_array_c4 *, const GFC_COMPLEX_4 *);
 639 internal_proto(internal_unpack_c4);
 640
 641 extern void internal_unpack_c8 (gfc_array_c8 *, const GFC_COMPLEX_8 *);
 642 internal_proto(internal_unpack_c8);
 643
 644 #if defined HAVE_GFC_COMPLEX_10
 645 extern void internal_unpack_c10 (gfc_array_c10 *, const GFC_COMPLEX_10 *);
 646 internal_proto(internal_unpack_c10);
 647 #endif
 648
 649 #if defined HAVE_GFC_COMPLEX_16
 650 extern void internal_unpack_c16 (gfc_array_c16 *, const GFC_COMPLEX_16 *);
 651 internal_proto(internal_unpack_c16);
 652 #endif
 653
 654 /* string_intrinsics.c */
 655
 656 extern GFC_INTEGER_4 compare_string (GFC_INTEGER_4, const char *,
 657                                      GFC_INTEGER_4, const char *);
 658 iexport_proto(compare_string);
 659
 660 /* random.c */
 661
 662 extern void random_seed (GFC_INTEGER_4 * size, gfc_array_i4 * put,
 663                          gfc_array_i4 * get);
 664 iexport_proto(random_seed);
 665
 666 /* size.c */
 667
 668 typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, void) array_t;
 669
 670 extern index_type size0 (const array_t * array);
 671 iexport_proto(size0);
 672
 673 #endif  /* LIBGFOR_H  */