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Diffstat (limited to 'gcc/fortran/intrinsic.c')
| -rw-r--r-- | gcc/fortran/intrinsic.c | 2560 |
1 files changed, 2560 insertions, 0 deletions
diff --git a/gcc/fortran/intrinsic.c b/gcc/fortran/intrinsic.c new file mode 100644 index 00000000000..3d05b72ca04 --- /dev/null +++ b/gcc/fortran/intrinsic.c @@ -0,0 +1,2560 @@ +/* Build up a list of intrinsic subroutines and functions for the + name-resolution stage. + Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc. + Contributed by Andy Vaught & Katherine Holcomb + +This file is part of GNU G95. + +GNU G95 is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU G95 is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU G95; see the file COPYING. If not, write to +the Free Software Foundation, 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + + +#include "config.h" +#include "system.h" +#include "flags.h" + +#include <stdio.h> +#include <stdarg.h> +#include <string.h> +#include <gmp.h> + +#include "gfortran.h" +#include "intrinsic.h" + + +/* Nanespace to hold the resolved symbols for intrinsic subroutines. */ +static gfc_namespace *gfc_intrinsic_namespace; + +int gfc_init_expr = 0; + +/* Pointers to a intrinsic function and its argument names being + checked. */ + +char *gfc_current_intrinsic, *gfc_current_intrinsic_arg[MAX_INTRINSIC_ARGS]; +locus *gfc_current_intrinsic_where; + +static gfc_intrinsic_sym *functions, *subroutines, *conversion, *next_sym; +static gfc_intrinsic_arg *next_arg; + +static int nfunc, nsub, nargs, nconv; + +static enum +{ SZ_NOTHING = 0, SZ_SUBS, SZ_FUNCS, SZ_CONVS } +sizing; + + +/* Return a letter based on the passed type. Used to construct the + name of a type-dependent subroutine. */ + +char +gfc_type_letter (bt type) +{ + char c; + + switch (type) + { + case BT_LOGICAL: + c = 'l'; + break; + case BT_CHARACTER: + c = 's'; + break; + case BT_INTEGER: + c = 'i'; + break; + case BT_REAL: + c = 'r'; + break; + case BT_COMPLEX: + c = 'c'; + break; + + default: + c = 'u'; + break; + } + + return c; +} + + +/* Get a symbol for a resolved name. */ + +gfc_symbol * +gfc_get_intrinsic_sub_symbol (const char * name) +{ + gfc_symbol *sym; + + gfc_get_symbol (name, gfc_intrinsic_namespace, &sym); + sym->attr.always_explicit = 1; + sym->attr.subroutine = 1; + sym->attr.flavor = FL_PROCEDURE; + sym->attr.proc = PROC_INTRINSIC; + + return sym; +} + + +/* Return a pointer to the name of a conversion function given two + typespecs. */ + +static char * +conv_name (gfc_typespec * from, gfc_typespec * to) +{ + static char name[30]; + + sprintf (name, "__convert_%c%d_%c%d", gfc_type_letter (from->type), + from->kind, gfc_type_letter (to->type), to->kind); + + return name; +} + + +/* Given a pair of typespecs, find the gfc_intrinsic_sym node that + corresponds to the conversion. Returns NULL if the conversion + isn't found. */ + +static gfc_intrinsic_sym * +find_conv (gfc_typespec * from, gfc_typespec * to) +{ + gfc_intrinsic_sym *sym; + char *target; + int i; + + target = conv_name (from, to); + sym = conversion; + + for (i = 0; i < nconv; i++, sym++) + if (strcmp (target, sym->name) == 0) + return sym; + + return NULL; +} + + +/* Interface to the check functions. We break apart an argument list + and call the proper check function rather than forcing each + function to manipulate the argument list. */ + +static try +do_check (gfc_intrinsic_sym * specific, gfc_actual_arglist * arg) +{ + gfc_expr *a1, *a2, *a3, *a4, *a5; + try t; + + a1 = arg->expr; + arg = arg->next; + + if (arg == NULL) + t = (*specific->check.f1) (a1); + else + { + a2 = arg->expr; + arg = arg->next; + + if (arg == NULL) + t = (*specific->check.f2) (a1, a2); + else + { + a3 = arg->expr; + arg = arg->next; + + if (arg == NULL) + t = (*specific->check.f3) (a1, a2, a3); + else + { + a4 = arg->expr; + arg = arg->next; + + if (arg == NULL) + t = (*specific->check.f4) (a1, a2, a3, a4); + else + { + a5 = arg->expr; + arg = arg->next; + + if (arg == NULL) + t = (*specific->check.f5) (a1, a2, a3, a4, a5); + else + { + gfc_internal_error ("do_check(): too many args"); + } + } + } + } + } + + return t; +} + + +/*********** Subroutines to build the intrinsic list ****************/ + +/* Add a single intrinsic symbol to the current list. + + Argument list: + char * name of function + int whether function is elemental + int If the function can be used as an actual argument + bt return type of function + int kind of return type of function + check pointer to check function + simplify pointer to simplification function + resolve pointer to resolution function + + Optional arguments come in multiples of four: + char * name of argument + bt type of argument + int kind of argument + int arg optional flag (1=optional, 0=required) + + The sequence is terminated by a NULL name. + + TODO: Are checks on actual_ok implemented elsewhere, or is that just + missing here? */ + +static void +add_sym (const char *name, int elemental, int actual_ok ATTRIBUTE_UNUSED, + bt type, int kind, gfc_check_f check, gfc_simplify_f simplify, + gfc_resolve_f resolve, ...) +{ + + int optional, first_flag; + va_list argp; + + switch (sizing) + { + case SZ_SUBS: + nsub++; + break; + + case SZ_FUNCS: + nfunc++; + break; + + case SZ_NOTHING: + strcpy (next_sym->name, name); + + strcpy (next_sym->lib_name, "_gfortran_"); + strcat (next_sym->lib_name, name); + + next_sym->elemental = elemental; + next_sym->ts.type = type; + next_sym->ts.kind = kind; + next_sym->simplify = simplify; + next_sym->check = check; + next_sym->resolve = resolve; + next_sym->specific = 0; + next_sym->generic = 0; + break; + + default: + gfc_internal_error ("add_sym(): Bad sizing mode"); + } + + va_start (argp, resolve); + + first_flag = 1; + + for (;;) + { + name = va_arg (argp, char *); + if (name == NULL) + break; + + type = (bt) va_arg (argp, int); + kind = va_arg (argp, int); + optional = va_arg (argp, int); + + if (sizing != SZ_NOTHING) + nargs++; + else + { + next_arg++; + + if (first_flag) + next_sym->formal = next_arg; + else + (next_arg - 1)->next = next_arg; + + first_flag = 0; + + strcpy (next_arg->name, name); + next_arg->ts.type = type; + next_arg->ts.kind = kind; + next_arg->optional = optional; + } + } + + va_end (argp); + + next_sym++; +} + + +static void add_sym_0 (const char *name, int elemental, int actual_ok, bt type, + int kind, + try (*check)(gfc_expr *), + gfc_expr *(*simplify)(gfc_expr *), + void (*resolve)(gfc_expr *,gfc_expr *) + ) { + gfc_simplify_f sf; + gfc_check_f cf; + gfc_resolve_f rf; + + cf.f1 = check; + sf.f1 = simplify; + rf.f1 = resolve; + + add_sym (name, elemental, actual_ok, type, kind, cf, sf, rf, + (void*)0); +} + + +static void add_sym_1 (const char *name, int elemental, int actual_ok, bt type, + int kind, + try (*check)(gfc_expr *), + gfc_expr *(*simplify)(gfc_expr *), + void (*resolve)(gfc_expr *,gfc_expr *), + const char* a1, bt type1, int kind1, int optional1 + ) { + gfc_check_f cf; + gfc_simplify_f sf; + gfc_resolve_f rf; + + cf.f1 = check; + sf.f1 = simplify; + rf.f1 = resolve; + + add_sym (name, elemental, actual_ok, type, kind, cf, sf, rf, + a1, type1, kind1, optional1, + (void*)0); +} + + +static void +add_sym_0s (const char * name, int actual_ok, + void (*resolve)(gfc_code *)) +{ + gfc_check_f cf; + gfc_simplify_f sf; + gfc_resolve_f rf; + + cf.f1 = NULL; + sf.f1 = NULL; + rf.s1 = resolve; + + add_sym (name, 1, actual_ok, BT_UNKNOWN, 0, cf, sf, rf, + (void*)0); +} + + +static void add_sym_1s (const char *name, int elemental, int actual_ok, bt type, + int kind, + try (*check)(gfc_expr *), + gfc_expr *(*simplify)(gfc_expr *), + void (*resolve)(gfc_code *), + const char* a1, bt type1, int kind1, int optional1 + ) { + gfc_check_f cf; + gfc_simplify_f sf; + gfc_resolve_f rf; + + cf.f1 = check; + sf.f1 = simplify; + rf.s1 = resolve; + + add_sym (name, elemental, actual_ok, type, kind, cf, sf, rf, + a1, type1, kind1, optional1, + (void*)0); +} + + +static void add_sym_1m (const char *name, int elemental, int actual_ok, bt type, + int kind, + try (*check)(gfc_actual_arglist *), + gfc_expr *(*simplify)(gfc_expr *), + void (*resolve)(gfc_expr *,gfc_actual_arglist *), + const char* a1, bt type1, int kind1, int optional1, + const char* a2, bt type2, int kind2, int optional2 + ) { + gfc_check_f cf; + gfc_simplify_f sf; + gfc_resolve_f rf; + + cf.f1m = check; + sf.f1 = simplify; + rf.f1m = resolve; + + add_sym (name, elemental, actual_ok, type, kind, cf, sf, rf, + a1, type1, kind1, optional1, + a2, type2, kind2, optional2, + (void*)0); +} + + +static void add_sym_2 (const char *name, int elemental, int actual_ok, bt type, + int kind, + try (*check)(gfc_expr *,gfc_expr *), + gfc_expr *(*simplify)(gfc_expr *,gfc_expr *), + void (*resolve)(gfc_expr *,gfc_expr *,gfc_expr *), + const char* a1, bt type1, int kind1, int optional1, + const char* a2, bt type2, int kind2, int optional2 + ) { + gfc_check_f cf; + gfc_simplify_f sf; + gfc_resolve_f rf; + + cf.f2 = check; + sf.f2 = simplify; + rf.f2 = resolve; + + add_sym (name, elemental, actual_ok, type, kind, cf, sf, rf, + a1, type1, kind1, optional1, + a2, type2, kind2, optional2, + (void*)0); +} + + +static void add_sym_3 (const char *name, int elemental, int actual_ok, bt type, + int kind, + try (*check)(gfc_expr *,gfc_expr *,gfc_expr *), + gfc_expr *(*simplify)(gfc_expr *,gfc_expr *,gfc_expr *), + void (*resolve)(gfc_expr *,gfc_expr *,gfc_expr *,gfc_expr *), + const char* a1, bt type1, int kind1, int optional1, + const char* a2, bt type2, int kind2, int optional2, + const char* a3, bt type3, int kind3, int optional3 + ) { + gfc_check_f cf; + gfc_simplify_f sf; + gfc_resolve_f rf; + + cf.f3 = check; + sf.f3 = simplify; + rf.f3 = resolve; + + add_sym (name, elemental, actual_ok, type, kind, cf, sf, rf, + a1, type1, kind1, optional1, + a2, type2, kind2, optional2, + a3, type3, kind3, optional3, + (void*)0); +} + + +static void add_sym_4 (const char *name, int elemental, int actual_ok, bt type, + int kind, + try (*check)(gfc_expr *,gfc_expr *,gfc_expr *,gfc_expr *), + gfc_expr *(*simplify)(gfc_expr *,gfc_expr *,gfc_expr *,gfc_expr *), + void (*resolve)(gfc_expr *,gfc_expr *,gfc_expr *,gfc_expr *,gfc_expr *), + const char* a1, bt type1, int kind1, int optional1, + const char* a2, bt type2, int kind2, int optional2, + const char* a3, bt type3, int kind3, int optional3, + const char* a4, bt type4, int kind4, int optional4 + ) { + gfc_check_f cf; + gfc_simplify_f sf; + gfc_resolve_f rf; + + cf.f4 = check; + sf.f4 = simplify; + rf.f4 = resolve; + + add_sym (name, elemental, actual_ok, type, kind, cf, sf, rf, + a1, type1, kind1, optional1, + a2, type2, kind2, optional2, + a3, type3, kind3, optional3, + a4, type4, kind4, optional4, + (void*)0); +} + + +static void add_sym_5 (const char *name, int elemental, int actual_ok, bt type, + int kind, + try (*check)(gfc_expr *,gfc_expr *,gfc_expr *,gfc_expr *,gfc_expr *), + gfc_expr *(*simplify)(gfc_expr *,gfc_expr *,gfc_expr *,gfc_expr *,gfc_expr *), + void (*resolve)(gfc_expr *,gfc_expr *,gfc_expr *,gfc_expr *,gfc_expr *,gfc_expr *), + const char* a1, bt type1, int kind1, int optional1, + const char* a2, bt type2, int kind2, int optional2, + const char* a3, bt type3, int kind3, int optional3, + const char* a4, bt type4, int kind4, int optional4, + const char* a5, bt type5, int kind5, int optional5 + ) { + gfc_check_f cf; + gfc_simplify_f sf; + gfc_resolve_f rf; + + cf.f5 = check; + sf.f5 = simplify; + rf.f5 = resolve; + + add_sym (name, elemental, actual_ok, type, kind, cf, sf, rf, + a1, type1, kind1, optional1, + a2, type2, kind2, optional2, + a3, type3, kind3, optional3, + a4, type4, kind4, optional4, + a5, type5, kind5, optional5, + (void*)0); +} + + +/* Locate an intrinsic symbol given a base pointer, number of elements + in the table and a pointer to a name. Returns the NULL pointer if + a name is not found. */ + +static gfc_intrinsic_sym * +find_sym (gfc_intrinsic_sym * start, int n, const char *name) +{ + + while (n > 0) + { + if (strcmp (name, start->name) == 0) + return start; + + start++; + n--; + } + + return NULL; +} + + +/* Given a name, find a function in the intrinsic function table. + Returns NULL if not found. */ + +gfc_intrinsic_sym * +gfc_find_function (const char *name) +{ + + return find_sym (functions, nfunc, name); +} + + +/* Given a name, find a function in the intrinsic subroutine table. + Returns NULL if not found. */ + +static gfc_intrinsic_sym * +find_subroutine (const char *name) +{ + + return find_sym (subroutines, nsub, name); +} + + +/* Given a string, figure out if it is the name of a generic intrinsic + function or not. */ + +int +gfc_generic_intrinsic (const char *name) +{ + gfc_intrinsic_sym *sym; + + sym = gfc_find_function (name); + return (sym == NULL) ? 0 : sym->generic; +} + + +/* Given a string, figure out if it is the name of a specific + intrinsic function or not. */ + +int +gfc_specific_intrinsic (const char *name) +{ + gfc_intrinsic_sym *sym; + + sym = gfc_find_function (name); + return (sym == NULL) ? 0 : sym->specific; +} + + +/* Given a string, figure out if it is the name of an intrinsic + subroutine or function. There are no generic intrinsic + subroutines, they are all specific. */ + +int +gfc_intrinsic_name (const char *name, int subroutine_flag) +{ + + return subroutine_flag ? + find_subroutine (name) != NULL : gfc_find_function (name) != NULL; +} + + +/* Collect a set of intrinsic functions into a generic collection. + The first argument is the name of the generic function, which is + also the name of a specific function. The rest of the specifics + currently in the table are placed into the list of specific + functions associated with that generic. */ + +static void +make_generic (const char *name, gfc_generic_isym_id generic_id) +{ + gfc_intrinsic_sym *g; + + if (sizing != SZ_NOTHING) + return; + + g = gfc_find_function (name); + if (g == NULL) + gfc_internal_error ("make_generic(): Can't find generic symbol '%s'", + name); + + g->generic = 1; + g->specific = 1; + g->generic_id = generic_id; + if ((g + 1)->name[0] != '\0') + g->specific_head = g + 1; + g++; + + while (g->name[0] != '\0') + { + g->next = g + 1; + g->specific = 1; + g->generic_id = generic_id; + g++; + } + + g--; + g->next = NULL; +} + + +/* Create a duplicate intrinsic function entry for the current + function, the only difference being the alternate name. Note that + we use argument lists more than once, but all argument lists are + freed as a single block. */ + +static void +make_alias (const char *name) +{ + + switch (sizing) + { + case SZ_FUNCS: + nfunc++; + break; + + case SZ_SUBS: + nsub++; + break; + + case SZ_NOTHING: + next_sym[0] = next_sym[-1]; + strcpy (next_sym->name, name); + next_sym++; + break; + + default: + break; + } +} + + +/* Add intrinsic functions. */ + +static void +add_functions (void) +{ + + /* Argument names as in the standard (to be used as argument keywords). */ + const char + *a = "a", *f = "field", *pt = "pointer", *tg = "target", + *b = "b", *m = "matrix", *ma = "matrix_a", *mb = "matrix_b", + *c = "c", *n = "ncopies", *pos = "pos", *bck = "back", + *i = "i", *v = "vector", *va = "vector_a", *vb = "vector_b", + *j = "j", *a1 = "a1", *fs = "fsource", *ts = "tsource", + *l = "l", *a2 = "a2", *mo = "mold", *ord = "order", + *p = "p", *ar = "array", *shp = "shape", *src = "source", + *r = "r", *bd = "boundary", *pad = "pad", *set = "set", + *s = "s", *dm = "dim", *kind = "kind", *msk = "mask", + *x = "x", *sh = "shift", *stg = "string", *ssg = "substring", + *y = "y", *sz = "size", *sta = "string_a", *stb = "string_b", + *z = "z", *ln = "len"; + + int di, dr, dd, dl, dc, dz, ii; + + di = gfc_default_integer_kind (); + dr = gfc_default_real_kind (); + dd = gfc_default_double_kind (); + dl = gfc_default_logical_kind (); + dc = gfc_default_character_kind (); + dz = gfc_default_complex_kind (); + ii = gfc_index_integer_kind; + + add_sym_1 ("abs", 1, 1, BT_REAL, dr, + gfc_check_abs, gfc_simplify_abs, gfc_resolve_abs, + a, BT_REAL, dr, 0); + + add_sym_1 ("iabs", 1, 1, BT_INTEGER, di, + NULL, gfc_simplify_abs, gfc_resolve_abs, + a, BT_INTEGER, di, 0); + + add_sym_1 ("dabs", 1, 1, BT_REAL, dd, + NULL, gfc_simplify_abs, gfc_resolve_abs, a, BT_REAL, dd, 0); + + add_sym_1 ("cabs", 1, 1, BT_REAL, dr, + NULL, gfc_simplify_abs, gfc_resolve_abs, + a, BT_COMPLEX, dz, 0); + + add_sym_1 ("zabs", 1, 1, BT_REAL, dd, NULL, gfc_simplify_abs, gfc_resolve_abs, a, BT_COMPLEX, dd, 0); /* Extension */ + + make_alias ("cdabs"); + + make_generic ("abs", GFC_ISYM_ABS); + + add_sym_1 ("achar", 1, 1, BT_CHARACTER, dc, + NULL, gfc_simplify_achar, NULL, i, BT_INTEGER, di, 0); + + make_generic ("achar", GFC_ISYM_ACHAR); + + add_sym_1 ("acos", 1, 1, BT_REAL, dr, + NULL, gfc_simplify_acos, gfc_resolve_acos, + x, BT_REAL, dr, 0); + + add_sym_1 ("dacos", 1, 1, BT_REAL, dd, + NULL, gfc_simplify_acos, gfc_resolve_acos, + x, BT_REAL, dd, 0); + + make_generic ("acos", GFC_ISYM_ACOS); + + add_sym_1 ("adjustl", 1, 1, BT_CHARACTER, dc, + NULL, gfc_simplify_adjustl, NULL, stg, BT_CHARACTER, dc, 0); + + make_generic ("adjustl", GFC_ISYM_ADJUSTL); + + add_sym_1 ("adjustr", 1, 1, BT_CHARACTER, dc, + NULL, gfc_simplify_adjustr, NULL, stg, BT_CHARACTER, dc, 0); + + make_generic ("adjustr", GFC_ISYM_ADJUSTR); + + add_sym_1 ("aimag", 1, 1, BT_REAL, dr, + NULL, gfc_simplify_aimag, gfc_resolve_aimag, + z, BT_COMPLEX, dz, 0); + + add_sym_1 ("dimag", 1, 1, BT_REAL, dd, NULL, gfc_simplify_aimag, gfc_resolve_aimag, z, BT_COMPLEX, dd, 0); /* Extension */ + + make_generic ("aimag", GFC_ISYM_AIMAG); + + add_sym_2 ("aint", 1, 1, BT_REAL, dr, + gfc_check_a_xkind, gfc_simplify_aint, gfc_resolve_aint, + a, BT_REAL, dr, 0, kind, BT_INTEGER, di, 1); + + add_sym_1 ("dint", 1, 1, BT_REAL, dd, + NULL, gfc_simplify_dint, gfc_resolve_dint, + a, BT_REAL, dd, 0); + + make_generic ("aint", GFC_ISYM_AINT); + + add_sym_2 ("all", 0, 1, BT_UNKNOWN, 0, + gfc_check_all_any, NULL, gfc_resolve_all, + msk, BT_LOGICAL, dl, 0, dm, BT_INTEGER, ii, 1); + + make_generic ("all", GFC_ISYM_ALL); + + add_sym_1 ("allocated", 0, 1, BT_LOGICAL, dl, + gfc_check_allocated, NULL, NULL, ar, BT_UNKNOWN, 0, 0); + + make_generic ("allocated", GFC_ISYM_ALLOCATED); + + add_sym_2 ("anint", 1, 1, BT_REAL, dr, + gfc_check_a_xkind, gfc_simplify_anint, gfc_resolve_anint, + a, BT_REAL, dr, 0, kind, BT_INTEGER, di, 1); + + add_sym_1 ("dnint", 1, 1, BT_REAL, dd, + NULL, gfc_simplify_dnint, gfc_resolve_dnint, + a, BT_REAL, dd, 0); + + make_generic ("anint", GFC_ISYM_ANINT); + + add_sym_2 ("any", 0, 1, BT_UNKNOWN, 0, + gfc_check_all_any, NULL, gfc_resolve_any, + msk, BT_LOGICAL, dl, 0, dm, BT_INTEGER, ii, 1); + + make_generic ("any", GFC_ISYM_ANY); + + add_sym_1 ("asin", 1, 1, BT_REAL, dr, + NULL, gfc_simplify_asin, gfc_resolve_asin, + x, BT_REAL, dr, 0); + + add_sym_1 ("dasin", 1, 1, BT_REAL, dd, + NULL, gfc_simplify_asin, gfc_resolve_asin, + x, BT_REAL, dd, 0); + + make_generic ("asin", GFC_ISYM_ASIN); + + add_sym_2 ("associated", 0, 1, BT_LOGICAL, dl, + gfc_check_associated, NULL, NULL, + pt, BT_UNKNOWN, 0, 0, tg, BT_UNKNOWN, 0, 1); + + make_generic ("associated", GFC_ISYM_ASSOCIATED); + + add_sym_1 ("atan", 1, 1, BT_REAL, dr, + NULL, gfc_simplify_atan, gfc_resolve_atan, + x, BT_REAL, dr, 0); + + add_sym_1 ("datan", 1, 1, BT_REAL, dd, + NULL, gfc_simplify_atan, gfc_resolve_atan, + x, BT_REAL, dd, 0); + + make_generic ("atan", GFC_ISYM_ATAN); + + add_sym_2 ("atan2", 1, 1, BT_REAL, dr, + NULL, gfc_simplify_atan2, gfc_resolve_atan2, + y, BT_REAL, dr, 0, x, BT_REAL, dr, 0); + + add_sym_2 ("datan2", 1, 1, BT_REAL, dd, + NULL, gfc_simplify_atan2, gfc_resolve_atan2, + y, BT_REAL, dd, 0, x, BT_REAL, dd, 0); + + make_generic ("atan2", GFC_ISYM_ATAN2); + + add_sym_1 ("bit_size", 0, 1, BT_INTEGER, di, + gfc_check_i, gfc_simplify_bit_size, NULL, + i, BT_INTEGER, di, 0); + + make_generic ("bit_size", GFC_ISYM_NONE); + + add_sym_2 ("btest", 1, 1, BT_LOGICAL, dl, + gfc_check_btest, gfc_simplify_btest, gfc_resolve_btest, + i, BT_INTEGER, di, 0, pos, BT_INTEGER, di, 0); + + make_generic ("btest", GFC_ISYM_BTEST); + + add_sym_2 ("ceiling", 1, 1, BT_INTEGER, di, + gfc_check_a_ikind, gfc_simplify_ceiling, gfc_resolve_ceiling, + a, BT_REAL, dr, 0, kind, BT_INTEGER, di, 1); + + make_generic ("ceiling", GFC_ISYM_CEILING); + + add_sym_2 ("char", 1, 0, BT_CHARACTER, dc, + gfc_check_char, gfc_simplify_char, gfc_resolve_char, + i, BT_INTEGER, di, 0, kind, BT_INTEGER, di, 1); + + make_generic ("char", GFC_ISYM_CHAR); + + add_sym_3 ("cmplx", 1, 1, BT_COMPLEX, dz, + gfc_check_cmplx, gfc_simplify_cmplx, gfc_resolve_cmplx, + x, BT_UNKNOWN, dr, 0, y, BT_UNKNOWN, dr, 1, + kind, BT_INTEGER, di, 1); + + make_generic ("cmplx", GFC_ISYM_CMPLX); + + /* Making dcmplx a specific of cmplx causes cmplx to return a double + complex instead of the default complex. */ + + add_sym_2 ("dcmplx", 1, 1, BT_COMPLEX, dd, + gfc_check_dcmplx, gfc_simplify_dcmplx, gfc_resolve_dcmplx, + x, BT_REAL, dd, 0, y, BT_REAL, dd, 1); /* Extension */ + + make_generic ("dcmplx", GFC_ISYM_CMPLX); + + add_sym_1 ("conjg", 1, 1, BT_COMPLEX, dz, + NULL, gfc_simplify_conjg, gfc_resolve_conjg, + z, BT_COMPLEX, dz, 0); + + add_sym_1 ("dconjg", 1, 1, BT_COMPLEX, dd, NULL, gfc_simplify_conjg, gfc_resolve_conjg, z, BT_COMPLEX, dd, 0); /* Extension */ + + make_generic ("conjg", GFC_ISYM_CONJG); + + add_sym_1 ("cos", 1, 1, BT_REAL, dr, + NULL, gfc_simplify_cos, gfc_resolve_cos, x, BT_REAL, dr, 0); + + add_sym_1 ("dcos", 1, 1, BT_REAL, dd, + NULL, gfc_simplify_cos, gfc_resolve_cos, x, BT_REAL, dd, 0); + + add_sym_1 ("ccos", 1, 1, BT_COMPLEX, dz, + NULL, gfc_simplify_cos, gfc_resolve_cos, + x, BT_COMPLEX, dz, 0); + + add_sym_1 ("zcos", 1, 1, BT_COMPLEX, dd, NULL, gfc_simplify_cos, gfc_resolve_cos, x, BT_COMPLEX, dd, 0); /* Extension */ + + make_alias ("cdcos"); + + make_generic ("cos", GFC_ISYM_COS); + + add_sym_1 ("cosh", 1, 1, BT_REAL, dr, + NULL, gfc_simplify_cosh, gfc_resolve_cosh, + x, BT_REAL, dr, 0); + + add_sym_1 ("dcosh", 1, 1, BT_REAL, dd, + NULL, gfc_simplify_cosh, gfc_resolve_cosh, + x, BT_REAL, dd, 0); + + make_generic ("cosh", GFC_ISYM_COSH); + + add_sym_2 ("count", 0, 1, BT_INTEGER, di, + gfc_check_count, NULL, gfc_resolve_count, + msk, BT_LOGICAL, dl, 0, dm, BT_INTEGER, ii, 1); + + make_generic ("count", GFC_ISYM_COUNT); + + add_sym_3 ("cshift", 0, 1, BT_REAL, dr, + gfc_check_cshift, NULL, gfc_resolve_cshift, + ar, BT_REAL, dr, 0, sh, BT_INTEGER, di, 0, + dm, BT_INTEGER, ii, 1); + + make_generic ("cshift", GFC_ISYM_CSHIFT); + + add_sym_1 ("dble", 1, 1, BT_REAL, dd, + gfc_check_dble, gfc_simplify_dble, gfc_resolve_dble, + a, BT_REAL, dr, 0); + + make_generic ("dble", GFC_ISYM_DBLE); + + add_sym_1 ("digits", 0, 1, BT_INTEGER, di, + gfc_check_digits, gfc_simplify_digits, NULL, + x, BT_UNKNOWN, dr, 0); + + make_generic ("digits", GFC_ISYM_NONE); + + add_sym_2 ("dim", 1, 1, BT_REAL, dr, + gfc_check_a_p, gfc_simplify_dim, gfc_resolve_dim, + x, BT_UNKNOWN, dr, 0, y, BT_UNKNOWN, dr, 0); + + add_sym_2 ("idim", 1, 1, BT_INTEGER, di, + NULL, gfc_simplify_dim, gfc_resolve_dim, + x, BT_INTEGER, di, 0, y, BT_INTEGER, di, 0); + + add_sym_2 ("ddim", 1, 1, BT_REAL, dd, + NULL, gfc_simplify_dim, gfc_resolve_dim, + x, BT_REAL, dd, 0, y, BT_REAL, dd, 0); + + make_generic ("dim", GFC_ISYM_DIM); + + add_sym_2 ("dot_product", 0, 1, BT_UNKNOWN, 0, + gfc_check_dot_product, NULL, gfc_resolve_dot_product, + va, BT_REAL, dr, 0, vb, BT_REAL, dr, 0); + + make_generic ("dot_product", GFC_ISYM_DOT_PRODUCT); + + add_sym_2 ("dprod", 1, 1, BT_REAL, dd, + NULL, gfc_simplify_dprod, gfc_resolve_dprod, + x, BT_REAL, dr, 0, y, BT_REAL, dr, 0); + + make_generic ("dprod", GFC_ISYM_DPROD); + + add_sym_1 ("dreal", 1, 0, BT_REAL, dd, NULL, NULL, NULL, a, BT_COMPLEX, dd, 0); /* Extension */ + + make_generic ("dreal", GFC_ISYM_REAL); + + add_sym_4 ("eoshift", 0, 1, BT_REAL, dr, + gfc_check_eoshift, NULL, gfc_resolve_eoshift, + ar, BT_REAL, dr, 0, sh, BT_INTEGER, ii, 0, + bd, BT_REAL, dr, 1, dm, BT_INTEGER, ii, 1); + + make_generic ("eoshift", GFC_ISYM_EOSHIFT); + + add_sym_1 ("epsilon", 0, 1, BT_REAL, dr, + gfc_check_x, gfc_simplify_epsilon, NULL, + x, BT_REAL, dr, 0); + + make_generic ("epsilon", GFC_ISYM_NONE); + + add_sym_1 ("exp", 1, 1, BT_REAL, dr, + NULL, gfc_simplify_exp, gfc_resolve_exp, x, BT_REAL, dr, 0); + + add_sym_1 ("dexp", 1, 1, BT_REAL, dd, + NULL, gfc_simplify_exp, gfc_resolve_exp, x, BT_REAL, dd, 0); + + add_sym_1 ("cexp", 1, 1, BT_COMPLEX, dz, + NULL, gfc_simplify_exp, gfc_resolve_exp, + x, BT_COMPLEX, dz, 0); + + add_sym_1 ("zexp", 1, 1, BT_COMPLEX, dd, NULL, gfc_simplify_exp, gfc_resolve_exp, x, BT_COMPLEX, dd, 0); /* Extension */ + + make_alias ("cdexp"); + + make_generic ("exp", GFC_ISYM_EXP); + + add_sym_1 ("exponent", 1, 1, BT_INTEGER, di, + gfc_check_x, gfc_simplify_exponent, gfc_resolve_exponent, + x, BT_REAL, dr, 0); + + make_generic ("exponent", GFC_ISYM_EXPONENT); + + add_sym_2 ("floor", 1, 1, BT_INTEGER, di, + gfc_check_a_ikind, gfc_simplify_floor, gfc_resolve_floor, + a, BT_REAL, dr, 0, kind, BT_INTEGER, di, 1); + + make_generic ("floor", GFC_ISYM_FLOOR); + + add_sym_1 ("fraction", 1, 1, BT_REAL, dr, + gfc_check_x, gfc_simplify_fraction, gfc_resolve_fraction, + x, BT_REAL, dr, 0); + + make_generic ("fraction", GFC_ISYM_FRACTION); + + add_sym_1 ("huge", 0, 1, BT_REAL, dr, + gfc_check_huge, gfc_simplify_huge, NULL, + x, BT_UNKNOWN, dr, 0); + + make_generic ("huge", GFC_ISYM_NONE); + + add_sym_1 ("iachar", 1, 1, BT_INTEGER, di, + NULL, gfc_simplify_iachar, NULL, c, BT_CHARACTER, dc, 0); + + make_generic ("iachar", GFC_ISYM_IACHAR); + + add_sym_2 ("iand", 1, 1, BT_INTEGER, di, + gfc_check_iand, gfc_simplify_iand, gfc_resolve_iand, + i, BT_INTEGER, di, 0, j, BT_INTEGER, di, 0); + + make_generic ("iand", GFC_ISYM_IAND); + + add_sym_0 ("iargc", 1, 1, BT_INTEGER, di, NULL, NULL, NULL); /* Extension, takes no arguments */ + + add_sym_2 ("ibclr", 1, 1, BT_INTEGER, di, + gfc_check_ibclr, gfc_simplify_ibclr, gfc_resolve_ibclr, + i, BT_INTEGER, di, 0, pos, BT_INTEGER, di, 0); + + make_generic ("ibclr", GFC_ISYM_IBCLR); + + add_sym_3 ("ibits", 1, 1, BT_INTEGER, di, + gfc_check_ibits, gfc_simplify_ibits, gfc_resolve_ibits, + i, BT_INTEGER, di, 0, pos, BT_INTEGER, di, 0, + ln, BT_INTEGER, di, 0); + + make_generic ("ibits", GFC_ISYM_IBITS); + + add_sym_2 ("ibset", 1, 1, BT_INTEGER, di, + gfc_check_ibset, gfc_simplify_ibset, gfc_resolve_ibset, + i, BT_INTEGER, di, 0, pos, BT_INTEGER, di, 0); + + make_generic ("ibset", GFC_ISYM_IBSET); + + add_sym_1 ("ichar", 1, 0, BT_INTEGER, di, + NULL, gfc_simplify_ichar, gfc_resolve_ichar, + c, BT_CHARACTER, dc, 0); + + make_generic ("ichar", GFC_ISYM_ICHAR); + + add_sym_2 ("ieor", 1, 1, BT_INTEGER, di, + gfc_check_ieor, gfc_simplify_ieor, gfc_resolve_ieor, + i, BT_INTEGER, di, 0, j, BT_INTEGER, di, 0); + + make_generic ("ieor", GFC_ISYM_IEOR); + + add_sym_3 ("index", 1, 1, BT_INTEGER, di, + gfc_check_index, gfc_simplify_index, NULL, + stg, BT_CHARACTER, dc, 0, ssg, BT_CHARACTER, dc, 0, + bck, BT_LOGICAL, dl, 1); + + make_generic ("index", GFC_ISYM_INDEX); + + add_sym_2 ("int", 1, 1, BT_INTEGER, di, + gfc_check_int, gfc_simplify_int, gfc_resolve_int, + a, BT_REAL, dr, 0, kind, BT_INTEGER, di, 1); + + add_sym_1 ("ifix", 1, 0, BT_INTEGER, di, + NULL, gfc_simplify_ifix, NULL, a, BT_REAL, dr, 0); + + add_sym_1 ("idint", 1, 0, BT_INTEGER, di, + NULL, gfc_simplify_idint, NULL, a, BT_REAL, dd, 0); + + make_generic ("int", GFC_ISYM_INT); + + add_sym_2 ("ior", 1, 1, BT_INTEGER, di, + gfc_check_ior, gfc_simplify_ior, gfc_resolve_ior, + i, BT_INTEGER, di, 0, j, BT_INTEGER, di, 0); + + make_generic ("ior", GFC_ISYM_IOR); + + add_sym_2 ("ishft", 1, 1, BT_INTEGER, di, + gfc_check_ishft, gfc_simplify_ishft, gfc_resolve_ishft, + i, BT_INTEGER, di, 0, sh, BT_INTEGER, di, 0); + + make_generic ("ishft", GFC_ISYM_ISHFT); + + add_sym_3 ("ishftc", 1, 1, BT_INTEGER, di, + gfc_check_ishftc, gfc_simplify_ishftc, gfc_resolve_ishftc, + i, BT_INTEGER, di, 0, sh, BT_INTEGER, di, 0, + sz, BT_INTEGER, di, 1); + + make_generic ("ishftc", GFC_ISYM_ISHFTC); + + add_sym_1 ("kind", 0, 1, BT_INTEGER, di, + gfc_check_kind, gfc_simplify_kind, NULL, x, BT_REAL, dr, 0); + + make_generic ("kind", GFC_ISYM_NONE); + + add_sym_2 ("lbound", 0, 1, BT_INTEGER, di, + gfc_check_lbound, gfc_simplify_lbound, gfc_resolve_lbound, + ar, BT_REAL, dr, 0, dm, BT_INTEGER, di, 1); + + make_generic ("lbound", GFC_ISYM_LBOUND); + + add_sym_1 ("len", 0, 1, BT_INTEGER, di, + NULL, gfc_simplify_len, gfc_resolve_len, + stg, BT_CHARACTER, dc, 0); + + make_generic ("len", GFC_ISYM_LEN); + + add_sym_1 ("len_trim", 1, 1, BT_INTEGER, di, + NULL, gfc_simplify_len_trim, gfc_resolve_len_trim, + stg, BT_CHARACTER, dc, 0); + + make_generic ("len_trim", GFC_ISYM_LEN_TRIM); + + add_sym_2 ("lge", 1, 0, BT_LOGICAL, dl, + NULL, gfc_simplify_lge, NULL, + sta, BT_CHARACTER, dc, 0, stb, BT_CHARACTER, dc, 0); + + make_generic ("lge", GFC_ISYM_LGE); + + add_sym_2 ("lgt", 1, 0, BT_LOGICAL, dl, + NULL, gfc_simplify_lgt, NULL, + sta, BT_CHARACTER, dc, 0, stb, BT_CHARACTER, dc, 0); + + make_generic ("lgt", GFC_ISYM_LGT); + + add_sym_2 ("lle", 1, 0, BT_LOGICAL, dl, + NULL, gfc_simplify_lle, NULL, + sta, BT_CHARACTER, dc, 0, stb, BT_CHARACTER, dc, 0); + + make_generic ("lle", GFC_ISYM_LLE); + + add_sym_2 ("llt", 1, 0, BT_LOGICAL, dl, + NULL, gfc_simplify_llt, NULL, + sta, BT_CHARACTER, dc, 0, stb, BT_CHARACTER, dc, 0); + + make_generic ("llt", GFC_ISYM_LLT); + + add_sym_1 ("log", 1, 1, BT_REAL, dr, + NULL, gfc_simplify_log, gfc_resolve_log, x, BT_REAL, dr, 0); + + add_sym_1 ("alog", 1, 1, BT_REAL, dr, + NULL, gfc_simplify_log, gfc_resolve_log, x, BT_REAL, dr, 0); + + add_sym_1 ("dlog", 1, 1, BT_REAL, dd, + NULL, gfc_simplify_log, gfc_resolve_log, x, BT_REAL, dd, 0); + + add_sym_1 ("clog", 1, 1, BT_COMPLEX, dz, + NULL, gfc_simplify_log, gfc_resolve_log, + x, BT_COMPLEX, dz, 0); + + add_sym_1 ("zlog", 1, 1, BT_COMPLEX, dd, NULL, gfc_simplify_log, gfc_resolve_log, x, BT_COMPLEX, dd, 0); /* Extension */ + + make_alias ("cdlog"); + + make_generic ("log", GFC_ISYM_LOG); + + add_sym_1 ("log10", 1, 1, BT_REAL, dr, + NULL, gfc_simplify_log10, gfc_resolve_log10, + x, BT_REAL, dr, 0); + + add_sym_1 ("alog10", 1, 1, BT_REAL, dr, + NULL, gfc_simplify_log10, gfc_resolve_log10, + x, BT_REAL, dr, 0); + + add_sym_1 ("dlog10", 1, 1, BT_REAL, dd, + NULL, gfc_simplify_log10, gfc_resolve_log10, + x, BT_REAL, dd, 0); + + make_generic ("log10", GFC_ISYM_LOG10); + + add_sym_2 ("logical", 0, 1, BT_LOGICAL, dl, + gfc_check_logical, gfc_simplify_logical, gfc_resolve_logical, + l, BT_LOGICAL, dl, 0, kind, BT_INTEGER, di, 1); + + make_generic ("logical", GFC_ISYM_LOGICAL); + + add_sym_2 ("matmul", 0, 1, BT_REAL, dr, + gfc_check_matmul, NULL, gfc_resolve_matmul, + ma, BT_REAL, dr, 0, mb, BT_REAL, dr, 0); + + make_generic ("matmul", GFC_ISYM_MATMUL); + + /* Note: amax0 is equivalent to real(max), max1 is equivalent to + int(max). The max function must take at least two arguments. */ + + add_sym_1m ("max", 1, 0, BT_UNKNOWN, 0, + gfc_check_min_max, gfc_simplify_max, gfc_resolve_max, + a1, BT_UNKNOWN, dr, 0, a2, BT_UNKNOWN, dr, 0); + + add_sym_1m ("max0", 1, 0, BT_INTEGER, di, + gfc_check_min_max_integer, gfc_simplify_max, NULL, + a1, BT_INTEGER, di, 0, a2, BT_INTEGER, di, 0); + + add_sym_1m ("amax0", 1, 0, BT_REAL, dr, + gfc_check_min_max_integer, gfc_simplify_max, NULL, + a1, BT_INTEGER, di, 0, a2, BT_INTEGER, di, 0); + + add_sym_1m ("amax1", 1, 0, BT_REAL, dr, + gfc_check_min_max_real, gfc_simplify_max, NULL, + a1, BT_REAL, dr, 0, a2, BT_REAL, dr, 0); + + add_sym_1m ("max1", 1, 0, BT_INTEGER, di, + gfc_check_min_max_real, gfc_simplify_max, NULL, + a1, BT_REAL, dr, 0, a2, BT_REAL, dr, 0); + + add_sym_1m ("dmax1", 1, 0, BT_REAL, dd, + gfc_check_min_max_double, gfc_simplify_max, NULL, + a1, BT_REAL, dd, 0, a2, BT_REAL, dd, 0); + + make_generic ("max", GFC_ISYM_MAX); + + add_sym_1 ("maxexponent", 0, 1, BT_INTEGER, di, + gfc_check_x, gfc_simplify_maxexponent, NULL, + x, BT_UNKNOWN, dr, 0); + + make_generic ("maxexponent", GFC_ISYM_NONE); + + add_sym_3 ("maxloc", 0, 1, BT_INTEGER, di, + gfc_check_minloc_maxloc, NULL, gfc_resolve_maxloc, + ar, BT_REAL, dr, 0, dm, BT_INTEGER, ii, 1, + msk, BT_LOGICAL, dl, 1); + + make_generic ("maxloc", GFC_ISYM_MAXLOC); + + add_sym_3 ("maxval", 0, 1, BT_REAL, dr, + gfc_check_minval_maxval, NULL, gfc_resolve_maxval, + ar, BT_REAL, dr, 0, dm, BT_INTEGER, ii, 1, + msk, BT_LOGICAL, dl, 1); + + make_generic ("maxval", GFC_ISYM_MAXVAL); + + add_sym_3 ("merge", 1, 1, BT_REAL, dr, + gfc_check_merge, NULL, gfc_resolve_merge, + ts, BT_REAL, dr, 0, fs, BT_REAL, dr, 0, + msk, BT_LOGICAL, dl, 0); + + make_generic ("merge", GFC_ISYM_MERGE); + + /* Note: amin0 is equivalent to real(min), min1 is equivalent to int(min). */ + + add_sym_1m ("min", 1, 0, BT_UNKNOWN, 0, + gfc_check_min_max, gfc_simplify_min, gfc_resolve_min, + a1, BT_REAL, dr, 0, a2, BT_REAL, dr, 0); + + add_sym_1m ("min0", 1, 0, BT_INTEGER, di, + gfc_check_min_max_integer, gfc_simplify_min, NULL, + a1, BT_INTEGER, di, 0, a2, BT_INTEGER, di, 0); + + add_sym_1m ("amin0", 1, 0, BT_REAL, dr, + gfc_check_min_max_integer, gfc_simplify_min, NULL, + a1, BT_INTEGER, di, 0, a2, BT_INTEGER, di, 0); + + add_sym_1m ("amin1", 1, 0, BT_REAL, dr, + gfc_check_min_max_real, gfc_simplify_min, NULL, + a1, BT_REAL, dr, 0, a2, BT_REAL, dr, 0); + + add_sym_1m ("min1", 1, 0, BT_INTEGER, di, + gfc_check_min_max_real, gfc_simplify_min, NULL, + a1, BT_REAL, dr, 0, a2, BT_REAL, dr, 0); + + add_sym_1m ("dmin1", 1, 0, BT_REAL, dd, + gfc_check_min_max_double, gfc_simplify_min, NULL, + a1, BT_REAL, dd, 0, a2, BT_REAL, dd, 0); + + make_generic ("min", GFC_ISYM_MIN); + + add_sym_1 ("minexponent", 0, 1, BT_INTEGER, di, + gfc_check_x, gfc_simplify_minexponent, NULL, + x, BT_UNKNOWN, dr, 0); + + make_generic ("minexponent", GFC_ISYM_NONE); + + add_sym_3 ("minloc", 0, 1, BT_INTEGER, di, + gfc_check_minloc_maxloc, NULL, gfc_resolve_minloc, + ar, BT_REAL, dr, 0, dm, BT_INTEGER, ii, 1, + msk, BT_LOGICAL, dl, 1); + + make_generic ("minloc", GFC_ISYM_MINLOC); + + add_sym_3 ("minval", 0, 1, BT_REAL, dr, + gfc_check_minval_maxval, NULL, gfc_resolve_minval, + ar, BT_REAL, dr, 0, dm, BT_INTEGER, ii, 1, + msk, BT_LOGICAL, dl, 1); + + make_generic ("minval", GFC_ISYM_MINVAL); + + add_sym_2 ("mod", 1, 1, BT_INTEGER, di, + gfc_check_a_p, gfc_simplify_mod, gfc_resolve_mod, + a, BT_INTEGER, di, 0, p, BT_INTEGER, di, 0); + + add_sym_2 ("amod", 1, 1, BT_REAL, dr, + NULL, gfc_simplify_mod, gfc_resolve_mod, + a, BT_REAL, dr, 0, p, BT_REAL, dr, 0); + + add_sym_2 ("dmod", 1, 1, BT_REAL, dd, + NULL, gfc_simplify_mod, gfc_resolve_mod, + a, BT_REAL, dd, 0, p, BT_REAL, dd, 0); + + make_generic ("mod", GFC_ISYM_MOD); + + add_sym_2 ("modulo", 1, 1, BT_REAL, di, + gfc_check_a_p, gfc_simplify_modulo, gfc_resolve_modulo, + a, BT_REAL, di, 0, p, BT_REAL, di, 0); + + make_generic ("modulo", GFC_ISYM_MODULO); + + add_sym_2 ("nearest", 1, 1, BT_REAL, dr, + gfc_check_nearest, gfc_simplify_nearest, NULL, + x, BT_REAL, dr, 0, s, BT_REAL, dr, 0); + + make_generic ("nearest", GFC_ISYM_NEAREST); + + add_sym_2 ("nint", 1, 1, BT_INTEGER, di, + gfc_check_a_ikind, gfc_simplify_nint, gfc_resolve_nint, + a, BT_REAL, dr, 0, kind, BT_INTEGER, di, 1); + + add_sym_1 ("idnint", 1, 1, BT_INTEGER, di, + gfc_check_idnint, gfc_simplify_idnint, gfc_resolve_idnint, + a, BT_REAL, dd, 0); + + make_generic ("nint", GFC_ISYM_NINT); + + add_sym_1 ("not", 1, 1, BT_INTEGER, di, + gfc_check_i, gfc_simplify_not, gfc_resolve_not, + i, BT_INTEGER, di, 0); + + make_generic ("not", GFC_ISYM_NOT); + + add_sym_1 ("null", 0, 1, BT_INTEGER, di, + gfc_check_null, gfc_simplify_null, NULL, + mo, BT_INTEGER, di, 1); + + make_generic ("null", GFC_ISYM_NONE); + + add_sym_3 ("pack", 0, 1, BT_REAL, dr, + gfc_check_pack, NULL, gfc_resolve_pack, + ar, BT_REAL, dr, 0, msk, BT_LOGICAL, dl, 0, + v, BT_REAL, dr, 1); + + make_generic ("pack", GFC_ISYM_PACK); + + add_sym_1 ("precision", 0, 1, BT_INTEGER, di, + gfc_check_precision, gfc_simplify_precision, NULL, + x, BT_UNKNOWN, 0, 0); + + make_generic ("precision", GFC_ISYM_NONE); + + add_sym_1 ("present", 0, 1, BT_LOGICAL, dl, + gfc_check_present, NULL, NULL, a, BT_REAL, dr, 0); + + make_generic ("present", GFC_ISYM_PRESENT); + + add_sym_3 ("product", 0, 1, BT_REAL, dr, + gfc_check_product, NULL, gfc_resolve_product, + ar, BT_REAL, dr, 0, dm, BT_INTEGER, ii, 1, + msk, BT_LOGICAL, dl, 1); + + make_generic ("product", GFC_ISYM_PRODUCT); + + add_sym_1 ("radix", 0, 1, BT_INTEGER, di, + gfc_check_radix, gfc_simplify_radix, NULL, + x, BT_UNKNOWN, 0, 0); + + make_generic ("radix", GFC_ISYM_NONE); + + add_sym_1 ("range", 0, 1, BT_INTEGER, di, + gfc_check_range, gfc_simplify_range, NULL, + x, BT_REAL, dr, 0); + + make_generic ("range", GFC_ISYM_NONE); + + add_sym_2 ("real", 1, 0, BT_REAL, dr, + gfc_check_real, gfc_simplify_real, gfc_resolve_real, + a, BT_UNKNOWN, dr, 0, kind, BT_INTEGER, di, 1); + + add_sym_1 ("float", 1, 0, BT_REAL, dr, + NULL, gfc_simplify_float, NULL, a, BT_INTEGER, di, 0); + + add_sym_1 ("sngl", 1, 0, BT_REAL, dr, + NULL, gfc_simplify_sngl, NULL, a, BT_REAL, dd, 0); + + make_generic ("real", GFC_ISYM_REAL); + + add_sym_2 ("repeat", 0, 1, BT_CHARACTER, dc, + gfc_check_repeat, gfc_simplify_repeat, gfc_resolve_repeat, + stg, BT_CHARACTER, dc, 0, n, BT_INTEGER, di, 0); + + make_generic ("repeat", GFC_ISYM_REPEAT); + + add_sym_4 ("reshape", 0, 1, BT_REAL, dr, + gfc_check_reshape, gfc_simplify_reshape, gfc_resolve_reshape, + src, BT_REAL, dr, 0, shp, BT_INTEGER, ii, 0, + pad, BT_REAL, dr, 1, ord, BT_INTEGER, ii, 1); + + make_generic ("reshape", GFC_ISYM_RESHAPE); + + add_sym_1 ("rrspacing", 1, 1, BT_REAL, dr, + gfc_check_x, gfc_simplify_rrspacing, gfc_resolve_rrspacing, + x, BT_REAL, dr, 0); + + make_generic ("rrspacing", GFC_ISYM_RRSPACING); + + add_sym_2 ("scale", 1, 1, BT_REAL, dr, + gfc_check_scale, gfc_simplify_scale, gfc_resolve_scale, + x, BT_REAL, dr, 0, i, BT_INTEGER, di, 0); + + make_generic ("scale", GFC_ISYM_SCALE); + + add_sym_3 ("scan", 1, 1, BT_INTEGER, di, + gfc_check_scan, gfc_simplify_scan, gfc_resolve_scan, + stg, BT_CHARACTER, dc, 0, set, BT_CHARACTER, dc, 0, + bck, BT_LOGICAL, dl, 1); + + make_generic ("scan", GFC_ISYM_SCAN); + + add_sym_1 ("selected_int_kind", 0, 1, BT_INTEGER, di, + NULL, gfc_simplify_selected_int_kind, NULL, + r, BT_INTEGER, di, 0); + + make_generic ("selected_int_kind", GFC_ISYM_SI_KIND); + + add_sym_2 ("selected_real_kind", 0, 1, BT_INTEGER, di, + gfc_check_selected_real_kind, gfc_simplify_selected_real_kind, + NULL, p, BT_INTEGER, di, 1, r, BT_INTEGER, di, 1); + + make_generic ("selected_real_kind", GFC_ISYM_SR_KIND); + + add_sym_2 ("set_exponent", 1, 1, BT_REAL, dr, + gfc_check_set_exponent, gfc_simplify_set_exponent, + gfc_resolve_set_exponent, + x, BT_REAL, dr, 0, i, BT_INTEGER, di, 0); + + make_generic ("set_exponent", GFC_ISYM_SET_EXPONENT); + + add_sym_1 ("shape", 0, 1, BT_INTEGER, di, + gfc_check_shape, gfc_simplify_shape, gfc_resolve_shape, + src, BT_REAL, dr, 0); + + make_generic ("shape", GFC_ISYM_SHAPE); + + add_sym_2 ("sign", 1, 1, BT_REAL, dr, + gfc_check_sign, gfc_simplify_sign, gfc_resolve_sign, + a, BT_REAL, dr, 0, b, BT_REAL, dr, 0); + + add_sym_2 ("isign", 1, 1, BT_INTEGER, di, + NULL, gfc_simplify_sign, gfc_resolve_sign, + a, BT_INTEGER, di, 0, b, BT_INTEGER, di, 0); + + add_sym_2 ("dsign", 1, 1, BT_REAL, dd, + NULL, gfc_simplify_sign, gfc_resolve_sign, + a, BT_REAL, dd, 0, b, BT_REAL, dd, 0); + + make_generic ("sign", GFC_ISYM_SIGN); + + add_sym_1 ("sin", 1, 1, BT_REAL, dr, + NULL, gfc_simplify_sin, gfc_resolve_sin, x, BT_REAL, dr, 0); + + add_sym_1 ("dsin", 1, 1, BT_REAL, dd, + NULL, gfc_simplify_sin, gfc_resolve_sin, x, BT_REAL, dd, 0); + + add_sym_1 ("csin", 1, 1, BT_COMPLEX, dz, + NULL, gfc_simplify_sin, gfc_resolve_sin, + x, BT_COMPLEX, dz, 0); + + add_sym_1 ("zsin", 1, 1, BT_COMPLEX, dd, NULL, gfc_simplify_sin, gfc_resolve_sin, x, BT_COMPLEX, dd, 0); /* Extension */ + + make_alias ("cdsin"); + + make_generic ("sin", GFC_ISYM_SIN); + + add_sym_1 ("sinh", 1, 1, BT_REAL, dr, + NULL, gfc_simplify_sinh, gfc_resolve_sinh, + x, BT_REAL, dr, 0); + + add_sym_1 ("dsinh", 1, 1, BT_REAL, dd, + NULL, gfc_simplify_sinh, gfc_resolve_sinh, + x, BT_REAL, dd, 0); + + make_generic ("sinh", GFC_ISYM_SINH); + + add_sym_2 ("size", 0, 1, BT_INTEGER, di, + gfc_check_size, gfc_simplify_size, NULL, + ar, BT_REAL, dr, 0, dm, BT_INTEGER, ii, 1); + + make_generic ("size", GFC_ISYM_SIZE); + + add_sym_1 ("spacing", 1, 1, BT_REAL, dr, + gfc_check_x, gfc_simplify_spacing, gfc_resolve_spacing, + x, BT_REAL, dr, 0); + + make_generic ("spacing", GFC_ISYM_SPACING); + + add_sym_3 ("spread", 0, 1, BT_REAL, dr, + gfc_check_spread, NULL, gfc_resolve_spread, + src, BT_REAL, dr, 0, dm, BT_INTEGER, ii, 0, + n, BT_INTEGER, di, 0); + + make_generic ("spread", GFC_ISYM_SPREAD); + + add_sym_1 ("sqrt", 1, 1, BT_REAL, dr, + NULL, gfc_simplify_sqrt, gfc_resolve_sqrt, + x, BT_REAL, dr, 0); + + add_sym_1 ("dsqrt", 1, 1, BT_REAL, dd, + NULL, gfc_simplify_sqrt, gfc_resolve_sqrt, + x, BT_REAL, dd, 0); + + add_sym_1 ("csqrt", 1, 1, BT_COMPLEX, dz, + NULL, gfc_simplify_sqrt, gfc_resolve_sqrt, + x, BT_COMPLEX, dz, 0); + + add_sym_1 ("zsqrt", 1, 1, BT_COMPLEX, dd, NULL, gfc_simplify_sqrt, gfc_resolve_sqrt, x, BT_COMPLEX, dd, 0); /* Extension */ + + make_alias ("cdsqrt"); + + make_generic ("sqrt", GFC_ISYM_SQRT); + + add_sym_3 ("sum", 0, 1, BT_UNKNOWN, 0, + gfc_check_sum, NULL, gfc_resolve_sum, + ar, BT_REAL, dr, 0, dm, BT_INTEGER, ii, 1, + msk, BT_LOGICAL, dl, 1); + + make_generic ("sum", GFC_ISYM_SUM); + + add_sym_1 ("tan", 1, 1, BT_REAL, dr, + NULL, gfc_simplify_tan, gfc_resolve_tan, x, BT_REAL, dr, 0); + + add_sym_1 ("dtan", 1, 1, BT_REAL, dd, + NULL, gfc_simplify_tan, gfc_resolve_tan, x, BT_REAL, dd, 0); + + make_generic ("tan", GFC_ISYM_TAN); + + add_sym_1 ("tanh", 1, 1, BT_REAL, dr, + NULL, gfc_simplify_tanh, gfc_resolve_tanh, + x, BT_REAL, dr, 0); + + add_sym_1 ("dtanh", 1, 1, BT_REAL, dd, + NULL, gfc_simplify_tanh, gfc_resolve_tanh, + x, BT_REAL, dd, 0); + + make_generic ("tanh", GFC_ISYM_TANH); + + add_sym_1 ("tiny", 0, 1, BT_REAL, dr, + gfc_check_x, gfc_simplify_tiny, NULL, x, BT_REAL, dr, 0); + + make_generic ("tiny", GFC_ISYM_NONE); + + add_sym_3 ("transfer", 0, 1, BT_REAL, dr, + gfc_check_transfer, NULL, gfc_resolve_transfer, + src, BT_REAL, dr, 0, mo, BT_REAL, dr, 0, + sz, BT_INTEGER, di, 1); + + make_generic ("transfer", GFC_ISYM_TRANSFER); + + add_sym_1 ("transpose", 0, 1, BT_REAL, dr, + gfc_check_transpose, NULL, gfc_resolve_transpose, + m, BT_REAL, dr, 0); + + make_generic ("transpose", GFC_ISYM_TRANSPOSE); + + add_sym_1 ("trim", 0, 1, BT_CHARACTER, dc, + gfc_check_trim, gfc_simplify_trim, gfc_resolve_trim, + stg, BT_CHARACTER, dc, 0); + + make_generic ("trim", GFC_ISYM_TRIM); + + add_sym_2 ("ubound", 0, 1, BT_INTEGER, di, + gfc_check_ubound, gfc_simplify_ubound, gfc_resolve_ubound, + ar, BT_REAL, dr, 0, dm, BT_INTEGER, ii, 1); + + make_generic ("ubound", GFC_ISYM_UBOUND); + + add_sym_3 ("unpack", 0, 1, BT_REAL, dr, + gfc_check_unpack, NULL, gfc_resolve_unpack, + v, BT_REAL, dr, 0, msk, BT_LOGICAL, dl, 0, + f, BT_REAL, dr, 0); + + make_generic ("unpack", GFC_ISYM_UNPACK); + + add_sym_3 ("verify", 1, 1, BT_INTEGER, di, + gfc_check_verify, gfc_simplify_verify, gfc_resolve_verify, + stg, BT_CHARACTER, dc, 0, set, BT_CHARACTER, dc, 0, + bck, BT_LOGICAL, dl, 1); + + make_generic ("verify", GFC_ISYM_VERIFY); +} + + + +/* Add intrinsic subroutines. */ + +static void +add_subroutines (void) +{ + /* Argument names as in the standard (to be used as argument keywords). */ + const char + *h = "harvest", *dt = "date", *vl = "values", *pt = "put", + *c = "count", *tm = "time", *tp = "topos", *gt = "get", + *t = "to", *zn = "zone", *fp = "frompos", *cm = "count_max", + *f = "from", *sz = "size", *ln = "len", *cr = "count_rate"; + + int di, dr, dc; + + di = gfc_default_integer_kind (); + dr = gfc_default_real_kind (); + dc = gfc_default_character_kind (); + + add_sym_0s ("abort", 1, NULL); + + add_sym_1s ("cpu_time", 0, 1, BT_UNKNOWN, 0, + gfc_check_cpu_time, NULL, gfc_resolve_cpu_time, + tm, BT_REAL, dr, 0); + + add_sym_4 ("date_and_time", 0, 1, BT_UNKNOWN, 0, + gfc_check_date_and_time, NULL, NULL, + dt, BT_CHARACTER, dc, 1, tm, BT_CHARACTER, dc, 1, + zn, BT_CHARACTER, dc, 1, vl, BT_INTEGER, di, 1); + + add_sym_2 ("getarg", 0, 1, BT_UNKNOWN, 0, + NULL, NULL, NULL, + c, BT_INTEGER, di, 0, vl, BT_CHARACTER, dc, 0); + /* Extension */ + + add_sym_5 ("mvbits", 1, 1, BT_UNKNOWN, 0, + gfc_check_mvbits, gfc_simplify_mvbits, NULL, + f, BT_INTEGER, di, 0, fp, BT_INTEGER, di, 0, + ln, BT_INTEGER, di, 0, t, BT_INTEGER, di, 0, + tp, BT_INTEGER, di, 0); + + add_sym_1s ("random_number", 0, 1, BT_UNKNOWN, 0, + gfc_check_random_number, NULL, gfc_resolve_random_number, + h, BT_REAL, dr, 0); + + add_sym_3 ("random_seed", 0, 1, BT_UNKNOWN, 0, + gfc_check_random_seed, NULL, NULL, + sz, BT_INTEGER, di, 1, pt, BT_INTEGER, di, 1, + gt, BT_INTEGER, di, 1); + + add_sym_3 ("system_clock", 0, 1, BT_UNKNOWN, 0, + NULL, NULL, NULL, + c, BT_INTEGER, di, 1, cr, BT_INTEGER, di, 1, + cm, BT_INTEGER, di, 1); +} + + +/* Add a function to the list of conversion symbols. */ + +static void +add_conv (bt from_type, int from_kind, bt to_type, int to_kind, + gfc_expr * (*simplify) (gfc_expr *, bt, int)) +{ + + gfc_typespec from, to; + gfc_intrinsic_sym *sym; + + if (sizing == SZ_CONVS) + { + nconv++; + return; + } + + gfc_clear_ts (&from); + from.type = from_type; + from.kind = from_kind; + + gfc_clear_ts (&to); + to.type = to_type; + to.kind = to_kind; + + sym = conversion + nconv; + + strcpy (sym->name, conv_name (&from, &to)); + strcpy (sym->lib_name, sym->name); + sym->simplify.cc = simplify; + sym->elemental = 1; + sym->ts = to; + sym->generic_id = GFC_ISYM_CONVERSION; + + nconv++; +} + + +/* Create gfc_intrinsic_sym nodes for all intrinsic conversion + functions by looping over the kind tables. */ + +static void +add_conversions (void) +{ + int i, j; + + /* Integer-Integer conversions. */ + for (i = 0; gfc_integer_kinds[i].kind != 0; i++) + for (j = 0; gfc_integer_kinds[j].kind != 0; j++) + { + if (i == j) + continue; + + add_conv (BT_INTEGER, gfc_integer_kinds[i].kind, + BT_INTEGER, gfc_integer_kinds[j].kind, gfc_convert_constant); + } + + /* Integer-Real/Complex conversions. */ + for (i = 0; gfc_integer_kinds[i].kind != 0; i++) + for (j = 0; gfc_real_kinds[j].kind != 0; j++) + { + add_conv (BT_INTEGER, gfc_integer_kinds[i].kind, + BT_REAL, gfc_real_kinds[j].kind, gfc_convert_constant); + + add_conv (BT_REAL, gfc_real_kinds[j].kind, + BT_INTEGER, gfc_integer_kinds[i].kind, gfc_convert_constant); + + add_conv (BT_INTEGER, gfc_integer_kinds[i].kind, + BT_COMPLEX, gfc_real_kinds[j].kind, gfc_convert_constant); + + add_conv (BT_COMPLEX, gfc_real_kinds[j].kind, + BT_INTEGER, gfc_integer_kinds[i].kind, gfc_convert_constant); + } + + /* Real/Complex - Real/Complex conversions. */ + for (i = 0; gfc_real_kinds[i].kind != 0; i++) + for (j = 0; gfc_real_kinds[j].kind != 0; j++) + { + if (i != j) + { + add_conv (BT_REAL, gfc_real_kinds[i].kind, + BT_REAL, gfc_real_kinds[j].kind, gfc_convert_constant); + + add_conv (BT_COMPLEX, gfc_real_kinds[i].kind, + BT_COMPLEX, gfc_real_kinds[j].kind, gfc_convert_constant); + } + + add_conv (BT_REAL, gfc_real_kinds[i].kind, + BT_COMPLEX, gfc_real_kinds[j].kind, gfc_convert_constant); + + add_conv (BT_COMPLEX, gfc_real_kinds[i].kind, + BT_REAL, gfc_real_kinds[j].kind, gfc_convert_constant); + } + + /* Logical/Logical kind conversion. */ + for (i = 0; gfc_logical_kinds[i].kind; i++) + for (j = 0; gfc_logical_kinds[j].kind; j++) + { + if (i == j) + continue; + + add_conv (BT_LOGICAL, gfc_logical_kinds[i].kind, + BT_LOGICAL, gfc_logical_kinds[j].kind, gfc_convert_constant); + } +} + + +/* Initialize the table of intrinsics. */ +void +gfc_intrinsic_init_1 (void) +{ + int i; + + nargs = nfunc = nsub = nconv = 0; + + /* Create a namespace to hold the resolved intrinsic symbols. */ + gfc_intrinsic_namespace = gfc_get_namespace (NULL); + + sizing = SZ_FUNCS; + add_functions (); + sizing = SZ_SUBS; + add_subroutines (); + sizing = SZ_CONVS; + add_conversions (); + + functions = gfc_getmem (sizeof (gfc_intrinsic_sym) * (nfunc + nsub) + + sizeof (gfc_intrinsic_arg) * nargs); + + next_sym = functions; + subroutines = functions + nfunc; + + conversion = gfc_getmem (sizeof (gfc_intrinsic_sym) * nconv); + + next_arg = ((gfc_intrinsic_arg *) (subroutines + nsub)) - 1; + + sizing = SZ_NOTHING; + nconv = 0; + + add_functions (); + add_subroutines (); + add_conversions (); + + /* Set the pure flag. All intrinsic functions are pure, and + intrinsic subroutines are pure if they are elemental. */ + + for (i = 0; i < nfunc; i++) + functions[i].pure = 1; + + for (i = 0; i < nsub; i++) + subroutines[i].pure = subroutines[i].elemental; +} + + +void +gfc_intrinsic_done_1 (void) +{ + gfc_free (functions); + gfc_free (conversion); + gfc_free_namespace (gfc_intrinsic_namespace); +} + + +/******** Subroutines to check intrinsic interfaces ***********/ + +/* Given a formal argument list, remove any NULL arguments that may + have been left behind by a sort against some formal argument list. */ + +static void +remove_nullargs (gfc_actual_arglist ** ap) +{ + gfc_actual_arglist *head, *tail, *next; + + tail = NULL; + + for (head = *ap; head; head = next) + { + next = head->next; + + if (head->expr == NULL) + { + head->next = NULL; + gfc_free_actual_arglist (head); + } + else + { + if (tail == NULL) + *ap = head; + else + tail->next = head; + + tail = head; + tail->next = NULL; + } + } + + if (tail == NULL) + *ap = NULL; +} + + +/* Given an actual arglist and a formal arglist, sort the actual + arglist so that its arguments are in a one-to-one correspondence + with the format arglist. Arguments that are not present are given + a blank gfc_actual_arglist structure. If something is obviously + wrong (say, a missing required argument) we abort sorting and + return FAILURE. */ + +static try +sort_actual (const char *name, gfc_actual_arglist ** ap, + gfc_intrinsic_arg * formal, locus * where) +{ + + gfc_actual_arglist *actual, *a; + gfc_intrinsic_arg *f; + + remove_nullargs (ap); + actual = *ap; + + for (f = formal; f; f = f->next) + f->actual = NULL; + + f = formal; + a = actual; + + if (f == NULL && a == NULL) /* No arguments */ + return SUCCESS; + + for (;;) + { /* Put the nonkeyword arguments in a 1:1 correspondence */ + if (f == NULL) + break; + if (a == NULL) + goto optional; + + if (a->name[0] != '\0') + goto keywords; + + f->actual = a; + + f = f->next; + a = a->next; + } + + if (a == NULL) + goto do_sort; + + gfc_error ("Too many arguments in call to '%s' at %L", name, where); + return FAILURE; + +keywords: + /* Associate the remaining actual arguments, all of which have + to be keyword arguments. */ + for (; a; a = a->next) + { + for (f = formal; f; f = f->next) + if (strcmp (a->name, f->name) == 0) + break; + + if (f == NULL) + { + gfc_error ("Can't find keyword named '%s' in call to '%s' at %L", + a->name, name, where); + return FAILURE; + } + + if (f->actual != NULL) + { + gfc_error ("Argument '%s' is appears twice in call to '%s' at %L", + f->name, name, where); + return FAILURE; + } + + f->actual = a; + } + +optional: + /* At this point, all unmatched formal args must be optional. */ + for (f = formal; f; f = f->next) + { + if (f->actual == NULL && f->optional == 0) + { + gfc_error ("Missing actual argument '%s' in call to '%s' at %L", + f->name, name, where); + return FAILURE; + } + } + +do_sort: + /* Using the formal argument list, string the actual argument list + together in a way that corresponds with the formal list. */ + actual = NULL; + + for (f = formal; f; f = f->next) + { + a = (f->actual == NULL) ? gfc_get_actual_arglist () : f->actual; + + if (actual == NULL) + *ap = a; + else + actual->next = a; + + actual = a; + } + actual->next = NULL; /* End the sorted argument list. */ + + return SUCCESS; +} + + +/* Compare an actual argument list with an intrinsic's formal argument + list. The lists are checked for agreement of type. We don't check + for arrayness here. */ + +static try +check_arglist (gfc_actual_arglist ** ap, gfc_intrinsic_sym * sym, + int error_flag) +{ + gfc_actual_arglist *actual; + gfc_intrinsic_arg *formal; + int i; + + formal = sym->formal; + actual = *ap; + + i = 0; + for (; formal; formal = formal->next, actual = actual->next, i++) + { + if (actual->expr == NULL) + continue; + + if (!gfc_compare_types (&formal->ts, &actual->expr->ts)) + { + if (error_flag) + gfc_error + ("Type of argument '%s' in call to '%s' at %L should be " + "%s, not %s", gfc_current_intrinsic_arg[i], + gfc_current_intrinsic, &actual->expr->where, + gfc_typename (&formal->ts), gfc_typename (&actual->expr->ts)); + return FAILURE; + } + } + + return SUCCESS; +} + + +/* Given a pointer to an intrinsic symbol and an expression node that + represent the function call to that subroutine, figure out the type + of the result. This may involve calling a resolution subroutine. */ + +static void +resolve_intrinsic (gfc_intrinsic_sym * specific, gfc_expr * e) +{ + gfc_expr *a1, *a2, *a3, *a4, *a5; + gfc_actual_arglist *arg; + + if (specific->resolve.f1 == NULL) + { + if (e->value.function.name == NULL) + e->value.function.name = specific->lib_name; + + if (e->ts.type == BT_UNKNOWN) + e->ts = specific->ts; + return; + } + + arg = e->value.function.actual; + + /* At present only the iargc extension intrinsic takes no arguments, + and it doesn't need a resolution function, but this is here for + generality. */ + if (arg == NULL) + { + (*specific->resolve.f0) (e); + return; + } + + /* Special case hacks for MIN and MAX. */ + if (specific->resolve.f1m == gfc_resolve_max + || specific->resolve.f1m == gfc_resolve_min) + { + (*specific->resolve.f1m) (e, arg); + return; + } + + a1 = arg->expr; + arg = arg->next; + + if (arg == NULL) + { + (*specific->resolve.f1) (e, a1); + return; + } + + a2 = arg->expr; + arg = arg->next; + + if (arg == NULL) + { + (*specific->resolve.f2) (e, a1, a2); + return; + } + + a3 = arg->expr; + arg = arg->next; + + if (arg == NULL) + { + (*specific->resolve.f3) (e, a1, a2, a3); + return; + } + + a4 = arg->expr; + arg = arg->next; + + if (arg == NULL) + { + (*specific->resolve.f4) (e, a1, a2, a3, a4); + return; + } + + a5 = arg->expr; + arg = arg->next; + + if (arg == NULL) + { + (*specific->resolve.f5) (e, a1, a2, a3, a4, a5); + return; + } + + gfc_internal_error ("resolve_intrinsic(): Too many args for intrinsic"); +} + + +/* Given an intrinsic symbol node and an expression node, call the + simplification function (if there is one), perhaps replacing the + expression with something simpler. We return FAILURE on an error + of the simplification, SUCCESS if the simplification worked, even + if nothing has changed in the expression itself. */ + +static try +do_simplify (gfc_intrinsic_sym * specific, gfc_expr * e) +{ + gfc_expr *result, *a1, *a2, *a3, *a4, *a5; + gfc_actual_arglist *arg; + + /* Max and min require special handling due to the variable number + of args. */ + if (specific->simplify.f1 == gfc_simplify_min) + { + result = gfc_simplify_min (e); + goto finish; + } + + if (specific->simplify.f1 == gfc_simplify_max) + { + result = gfc_simplify_max (e); + goto finish; + } + + if (specific->simplify.f1 == NULL) + { + result = NULL; + goto finish; + } + + arg = e->value.function.actual; + + a1 = arg->expr; + arg = arg->next; + + if (specific->simplify.cc == gfc_convert_constant) + { + result = gfc_convert_constant (a1, specific->ts.type, specific->ts.kind); + goto finish; + } + + /* TODO: Warn if -pedantic and initialization expression and arg + types not integer or character */ + + if (arg == NULL) + result = (*specific->simplify.f1) (a1); + else + { + a2 = arg->expr; + arg = arg->next; + + if (arg == NULL) + result = (*specific->simplify.f2) (a1, a2); + else + { + a3 = arg->expr; + arg = arg->next; + + if (arg == NULL) + result = (*specific->simplify.f3) (a1, a2, a3); + else + { + a4 = arg->expr; + arg = arg->next; + + if (arg == NULL) + result = (*specific->simplify.f4) (a1, a2, a3, a4); + else + { + a5 = arg->expr; + arg = arg->next; + + if (arg == NULL) + result = (*specific->simplify.f5) (a1, a2, a3, a4, a5); + else + gfc_internal_error + ("do_simplify(): Too many args for intrinsic"); + } + } + } + } + +finish: + if (result == &gfc_bad_expr) + return FAILURE; + + if (result == NULL) + resolve_intrinsic (specific, e); /* Must call at run-time */ + else + { + result->where = e->where; + gfc_replace_expr (e, result); + } + + return SUCCESS; +} + + +/* Initialize the gfc_current_intrinsic_arg[] array for the benefit of + error messages. This subroutine returns FAILURE if a subroutine + has more than MAX_INTRINSIC_ARGS, in which case the actual argument + list cannot match any intrinsic. */ + +static void +init_arglist (gfc_intrinsic_sym * isym) +{ + gfc_intrinsic_arg *formal; + int i; + + gfc_current_intrinsic = isym->name; + + i = 0; + for (formal = isym->formal; formal; formal = formal->next) + { + if (i >= MAX_INTRINSIC_ARGS) + gfc_internal_error ("init_arglist(): too many arguments"); + gfc_current_intrinsic_arg[i++] = formal->name; + } +} + + +/* Given a pointer to an intrinsic symbol and an expression consisting + of a function call, see if the function call is consistent with the + intrinsic's formal argument list. Return SUCCESS if the expression + and intrinsic match, FAILURE otherwise. */ + +static try +check_specific (gfc_intrinsic_sym * specific, gfc_expr * expr, int error_flag) +{ + gfc_actual_arglist *arg, **ap; + int r; + try t; + + ap = &expr->value.function.actual; + + init_arglist (specific); + + /* Don't attempt to sort the argument list for min or max. */ + if (specific->check.f1m == gfc_check_min_max + || specific->check.f1m == gfc_check_min_max_integer + || specific->check.f1m == gfc_check_min_max_real + || specific->check.f1m == gfc_check_min_max_double) + return (*specific->check.f1m) (*ap); + + if (sort_actual (specific->name, ap, specific->formal, + &expr->where) == FAILURE) + return FAILURE; + + if (specific->check.f1 == NULL) + { + t = check_arglist (ap, specific, error_flag); + if (t == SUCCESS) + expr->ts = specific->ts; + } + else + t = do_check (specific, *ap); + + /* Check ranks for elemental intrinsics. */ + if (t == SUCCESS && specific->elemental) + { + r = 0; + for (arg = expr->value.function.actual; arg; arg = arg->next) + { + if (arg->expr == NULL || arg->expr->rank == 0) + continue; + if (r == 0) + { + r = arg->expr->rank; + continue; + } + + if (arg->expr->rank != r) + { + gfc_error + ("Ranks of arguments to elemental intrinsic '%s' differ " + "at %L", specific->name, &arg->expr->where); + return FAILURE; + } + } + } + + if (t == FAILURE) + remove_nullargs (ap); + + return t; +} + + +/* See if an intrinsic is one of the intrinsics we evaluate + as an extension. */ + +static int +gfc_init_expr_extensions (gfc_intrinsic_sym *isym) +{ + /* FIXME: This should be moved into the intrinsic definitions. */ + static const char * const init_expr_extensions[] = { + "digits", "epsilon", "huge", "kind", "maxexponent", "minexponent", + "precision", "present", "radix", "range", "selected_real_kind", + "tiny", NULL + }; + + int i; + + for (i = 0; init_expr_extensions[i]; i++) + if (strcmp (init_expr_extensions[i], isym->name) == 0) + return 0; + + return 1; +} + + +/* See if a function call corresponds to an intrinsic function call. + We return: + + MATCH_YES if the call corresponds to an intrinsic, simplification + is done if possible. + + MATCH_NO if the call does not correspond to an intrinsic + + MATCH_ERROR if the call corresponds to an intrinsic but there was an + error during the simplification process. + + The error_flag parameter enables an error reporting. */ + +match +gfc_intrinsic_func_interface (gfc_expr * expr, int error_flag) +{ + gfc_intrinsic_sym *isym, *specific; + gfc_actual_arglist *actual; + const char *name; + int flag; + + if (expr->value.function.isym != NULL) + return (do_simplify (expr->value.function.isym, expr) == FAILURE) + ? MATCH_ERROR : MATCH_YES; + + gfc_suppress_error = !error_flag; + flag = 0; + + for (actual = expr->value.function.actual; actual; actual = actual->next) + if (actual->expr != NULL) + flag |= (actual->expr->ts.type != BT_INTEGER + && actual->expr->ts.type != BT_CHARACTER); + + name = expr->symtree->n.sym->name; + + isym = specific = gfc_find_function (name); + if (isym == NULL) + { + gfc_suppress_error = 0; + return MATCH_NO; + } + + gfc_current_intrinsic_where = &expr->where; + + /* Bypass the generic list for min and max. */ + if (isym->check.f1m == gfc_check_min_max) + { + init_arglist (isym); + + if (gfc_check_min_max (expr->value.function.actual) == SUCCESS) + goto got_specific; + + gfc_suppress_error = 0; + return MATCH_NO; + } + + /* If the function is generic, check all of its specific + incarnations. If the generic name is also a specific, we check + that name last, so that any error message will correspond to the + specific. */ + gfc_suppress_error = 1; + + if (isym->generic) + { + for (specific = isym->specific_head; specific; + specific = specific->next) + { + if (specific == isym) + continue; + if (check_specific (specific, expr, 0) == SUCCESS) + goto got_specific; + } + } + + gfc_suppress_error = !error_flag; + + if (check_specific (isym, expr, error_flag) == FAILURE) + { + gfc_suppress_error = 0; + return MATCH_NO; + } + + specific = isym; + +got_specific: + expr->value.function.isym = specific; + gfc_intrinsic_symbol (expr->symtree->n.sym); + + if (do_simplify (specific, expr) == FAILURE) + { + gfc_suppress_error = 0; + return MATCH_ERROR; + } + + /* TODO: We should probably only allow elemental functions here. */ + flag |= (expr->ts.type != BT_INTEGER && expr->ts.type != BT_CHARACTER); + + gfc_suppress_error = 0; + if (pedantic && gfc_init_expr + && flag && gfc_init_expr_extensions (specific)) + { + if (gfc_notify_std (GFC_STD_GNU, "Extension: Evaluation of " + "nonstandard initialization expression at %L", &expr->where) + == FAILURE) + { + return MATCH_ERROR; + } + } + + return MATCH_YES; +} + + +/* See if a CALL statement corresponds to an intrinsic subroutine. + Returns MATCH_YES if the subroutine corresponds to an intrinsic, + MATCH_NO if not, and MATCH_ERROR if there was an error (but did + correspond). */ + +match +gfc_intrinsic_sub_interface (gfc_code * c, int error_flag) +{ + gfc_intrinsic_sym *isym; + const char *name; + + name = c->symtree->n.sym->name; + + isym = find_subroutine (name); + if (isym == NULL) + return MATCH_NO; + + gfc_suppress_error = !error_flag; + + init_arglist (isym); + + if (sort_actual (name, &c->ext.actual, isym->formal, &c->loc) == FAILURE) + goto fail; + + if (isym->check.f1 != NULL) + { + if (do_check (isym, c->ext.actual) == FAILURE) + goto fail; + } + else + { + if (check_arglist (&c->ext.actual, isym, 1) == FAILURE) + goto fail; + } + + /* The subroutine corresponds to an intrinsic. Allow errors to be + seen at this point. */ + gfc_suppress_error = 0; + + if (isym->resolve.s1 != NULL) + isym->resolve.s1 (c); + else + c->resolved_sym = gfc_get_intrinsic_sub_symbol (isym->lib_name); + + if (gfc_pure (NULL) && !isym->elemental) + { + gfc_error ("Subroutine call to intrinsic '%s' at %L is not PURE", name, + &c->loc); + return MATCH_ERROR; + } + + return MATCH_YES; + +fail: + gfc_suppress_error = 0; + return MATCH_NO; +} + + +/* Call gfc_convert_type() with warning enabled. */ + +try +gfc_convert_type (gfc_expr * expr, gfc_typespec * ts, int eflag) +{ + return gfc_convert_type_warn (expr, ts, eflag, 1); +} + + +/* Try to convert an expression (in place) from one type to another. + 'eflag' controls the behavior on error. + + The possible values are: + + 1 Generate a gfc_error() + 2 Generate a gfc_internal_error(). + + 'wflag' controls the warning related to conversion. */ + +try +gfc_convert_type_warn (gfc_expr * expr, gfc_typespec * ts, int eflag, + int wflag) +{ + gfc_intrinsic_sym *sym; + gfc_typespec from_ts; + locus old_where; + gfc_expr *new; + int rank; + + from_ts = expr->ts; /* expr->ts gets clobbered */ + + if (ts->type == BT_UNKNOWN) + goto bad; + + /* NULL and zero size arrays get their type here. */ + if (expr->expr_type == EXPR_NULL + || (expr->expr_type == EXPR_ARRAY + && expr->value.constructor == NULL)) + { + /* Sometimes the RHS acquire the type. */ + expr->ts = *ts; + return SUCCESS; + } + + if (expr->ts.type == BT_UNKNOWN) + goto bad; + + if (expr->ts.type == BT_DERIVED + && ts->type == BT_DERIVED + && gfc_compare_types (&expr->ts, ts)) + return SUCCESS; + + sym = find_conv (&expr->ts, ts); + if (sym == NULL) + goto bad; + + /* At this point, a conversion is necessary. A warning may be needed. */ + if (wflag && gfc_option.warn_conversion) + gfc_warning_now ("Conversion from %s to %s at %L", + gfc_typename (&from_ts), gfc_typename (ts), &expr->where); + + /* Insert a pre-resolved function call to the right function. */ + old_where = expr->where; + rank = expr->rank; + new = gfc_get_expr (); + *new = *expr; + + new = gfc_build_conversion (new); + new->value.function.name = sym->lib_name; + new->value.function.isym = sym; + new->where = old_where; + new->rank = rank; + + *expr = *new; + + gfc_free (new); + expr->ts = *ts; + + if (gfc_is_constant_expr (expr->value.function.actual->expr) + && do_simplify (sym, expr) == FAILURE) + { + + if (eflag == 2) + goto bad; + return FAILURE; /* Error already generated in do_simplify() */ + } + + return SUCCESS; + +bad: + if (eflag == 1) + { + gfc_error ("Can't convert %s to %s at %L", + gfc_typename (&from_ts), gfc_typename (ts), &expr->where); + return FAILURE; + } + + gfc_internal_error ("Can't convert %s to %s at %L", + gfc_typename (&from_ts), gfc_typename (ts), + &expr->where); + /* Not reached */ +} |