944b8b35a9
* gfortran.h: Add bitmasks for different FPE traps. Add fpe member to options_t. * invoke.texi: Document the new -ffpe-trap option. * lang.opt: Add -ffpe-trap option. * options.c (gfc_init_options): Initialize the FPE option. (gfc_handle_fpe_trap_option): New function to parse the argument of the -ffpe-trap option. (gfc_handle_option): Add case for -ffpe-trap. * trans-decl.c: Declare a tree for the set_fpe library function. (gfc_build_builtin_function_decls): Build this tree. (gfc_generate_function_code): Generate a call to set_fpe at the beginning of the main program. * trans.h: New tree for the set_fpe library function. * Makefile.am: Add fpu.c to the build process, and target-dependent code as fpu-target.h. * Makefile.in: Regenerate. * configure.ac: Add call to configure.host to set FPU_HOST_HEADER. * configure: Regenerate. * config.h.in: Regenerate. * aclocal.m4: Regenerate. * configure.host: New script to determine which host-dependent code should go in. * libgfortran.h: Add fpe option, remove previous fpu_ options. Add bitmasks for different FPE traps. Add prototype for set_fpu. * runtime/environ.c: Remove environment variables to control fpu behaviour. * runtime/fpu.c (set_fpe): New function for the front-end. * runtime/main.c (init): Set FPU state. * config: New directory to store host-dependent code. * config/fpu-387.h: New file with code handling the i387 FPU. * config/fpu-glibc.h: New file with code for glibc systems. * config/fpu-generic.h: Fallback for the most generic host. Issue warnings. From-SVN: r105328
614 lines
18 KiB
C
614 lines
18 KiB
C
/* Common declarations for all of libgfor.
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Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
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Contributed by Paul Brook <paul@nowt.org>, and
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Andy Vaught <andy@xena.eas.asu.edu>
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This file is part of the GNU Fortran 95 runtime library (libgfortran).
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Libgfortran is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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Libgfortran is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with libgfor; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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/* As a special exception, if you link this library with other files,
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some of which are compiled with GCC, to produce an executable,
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this library does not by itself cause the resulting executable
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to be covered by the GNU General Public License.
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This exception does not however invalidate any other reasons why
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the executable file might be covered by the GNU General Public License. */
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#ifndef LIBGFOR_H
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#define LIBGFOR_H
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#include <math.h>
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#include <stddef.h>
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#ifndef M_PI
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#define M_PI 3.14159265358979323846264338327
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#endif
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#if HAVE_COMPLEX_H
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# include <complex.h>
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#else
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#define complex __complex__
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#endif
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#include "config.h"
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#include "c99_protos.h"
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#if HAVE_IEEEFP_H
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#include <ieeefp.h>
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#endif
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#if HAVE_STDINT_H
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#include <stdint.h>
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#endif
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#if HAVE_INTTYPES_H
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#include <inttypes.h>
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#endif
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#if !defined(HAVE_STDINT_H) && !defined(HAVE_INTTYPES_H) && defined(TARGET_ILP32)
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typedef char int8_t;
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typedef short int16_t;
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typedef int int32_t;
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typedef long long int64_t;
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typedef unsigned char uint8_t;
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typedef unsigned short uint16_t;
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typedef unsigned int uint32_t;
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typedef unsigned long long uint64_t;
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#endif
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#if HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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typedef off_t gfc_offset;
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#ifndef NULL
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#define NULL (void *) 0
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#endif
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#ifndef __GNUC__
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#define __attribute__(x)
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#endif
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/* For a library, a standard prefix is a requirement in order to partition
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the namespace. IPREFIX is for symbols intended to be internal to the
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library. */
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#define PREFIX(x) _gfortran_ ## x
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#define IPREFIX(x) _gfortrani_ ## x
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/* Magic to rename a symbol at the compiler level. You continue to refer
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to the symbol as OLD in the source, but it'll be named NEW in the asm. */
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#define sym_rename(old, new) sym_rename1(old, __USER_LABEL_PREFIX__, new)
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#define sym_rename1(old, ulp, new) sym_rename2(old, ulp, new)
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#define sym_rename2(old, ulp, new) extern __typeof(old) old __asm__(#ulp #new)
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/* There are several classifications of routines:
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(1) Symbols used only within the library,
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(2) Symbols to be exported from the library,
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(3) Symbols to be exported from the library, but
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also used inside the library.
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By telling the compiler about these different classifications we can
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tightly control the interface seen by the user, and get better code
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from the compiler at the same time.
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One of the following should be used immediately after the declaration
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of each symbol:
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internal_proto Marks a symbol used only within the library,
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and adds IPREFIX to the assembly-level symbol
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name. The later is important for maintaining
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the namespace partition for the static library.
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export_proto Marks a symbol to be exported, and adds PREFIX
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to the assembly-level symbol name.
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export_proto_np Marks a symbol to be exported without adding PREFIX.
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iexport_proto Marks a function to be exported, but with the
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understanding that it can be used inside as well.
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iexport_data_proto Similarly, marks a data symbol to be exported.
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Unfortunately, some systems can't play the hidden
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symbol renaming trick on data symbols, thanks to
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the horribleness of COPY relocations.
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If iexport_proto or iexport_data_proto is used, you must also use
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iexport or iexport_data after the *definition* of the symbol. */
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#if defined(HAVE_ATTRIBUTE_VISIBILITY)
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# define internal_proto(x) \
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sym_rename(x, IPREFIX (x)) __attribute__((__visibility__("hidden")))
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#else
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# define internal_proto(x) sym_rename(x, IPREFIX(x))
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#endif
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#if defined(HAVE_ATTRIBUTE_VISIBILITY) && defined(HAVE_ATTRIBUTE_ALIAS)
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# define export_proto(x) sym_rename(x, PREFIX(x))
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# define export_proto_np(x) extern char swallow_semicolon
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# define iexport_proto(x) internal_proto(x)
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# define iexport(x) iexport1(x, __USER_LABEL_PREFIX__, IPREFIX(x))
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# define iexport1(x,p,y) iexport2(x,p,y)
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# define iexport2(x,p,y) \
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extern __typeof(x) PREFIX(x) __attribute__((__alias__(#p #y)))
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/* ??? We're not currently building a dll, and it's wrong to add dllexport
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to objects going into a static library archive. */
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#elif 0 && defined(HAVE_ATTRIBUTE_DLLEXPORT)
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# define export_proto_np(x) extern __typeof(x) x __attribute__((dllexport))
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# define export_proto(x) sym_rename(x, PREFIX(x)) __attribute__((dllexport))
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# define iexport_proto(x) export_proto(x)
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# define iexport(x) extern char swallow_semicolon
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#else
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# define export_proto(x) sym_rename(x, PREFIX(x))
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# define export_proto_np(x) extern char swallow_semicolon
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# define iexport_proto(x) export_proto(x)
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# define iexport(x) extern char swallow_semicolon
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#endif
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/* TODO: detect the case when we *can* hide the symbol. */
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#define iexport_data_proto(x) export_proto(x)
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#define iexport_data(x) extern char swallow_semicolon
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/* The only reliable way to get the offset of a field in a struct
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in a system independent way is via this macro. */
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#ifndef offsetof
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#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)
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#endif
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/* The isfinite macro is only available with C99, but some non-C99
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systems still provide fpclassify, and there is a `finite' function
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in BSD.
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Also, isfinite is broken on Cygwin.
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When isfinite is not available, try to use one of the
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alternatives, or bail out. */
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#if defined(HAVE_BROKEN_ISFINITE) || defined(__CYGWIN__)
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#undef isfinite
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#endif
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#if defined(HAVE_BROKEN_ISNAN)
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#undef isnan
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#endif
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#if defined(HAVE_BROKEN_FPCLASSIFY)
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#undef fpclassify
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#endif
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#if !defined(isfinite)
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#if !defined(fpclassify)
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#define isfinite(x) ((x) - (x) == 0)
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#else
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#define isfinite(x) (fpclassify(x) != FP_NAN && fpclassify(x) != FP_INFINITE)
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#endif /* !defined(fpclassify) */
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#endif /* !defined(isfinite) */
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#if !defined(isnan)
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#if !defined(fpclassify)
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#define isnan(x) ((x) != (x))
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#else
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#define isnan(x) (fpclassify(x) == FP_NAN)
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#endif /* !defined(fpclassify) */
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#endif /* !defined(isfinite) */
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/* TODO: find the C99 version of these an move into above ifdef. */
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#define REALPART(z) (__real__(z))
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#define IMAGPART(z) (__imag__(z))
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#define COMPLEX_ASSIGN(z_, r_, i_) {__real__(z_) = (r_); __imag__(z_) = (i_);}
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#include "kinds.h"
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/* The following two definitions must be consistent with the types used
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by the compiler. */
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/* The type used of array indices, amongst other things. */
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typedef ssize_t index_type;
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/* The type used for the lengths of character variables. */
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typedef GFC_INTEGER_4 gfc_charlen_type;
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/* This will be 0 on little-endian machines and one on big-endian machines. */
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extern int l8_to_l4_offset;
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internal_proto(l8_to_l4_offset);
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#define GFOR_POINTER_L8_TO_L4(p8) \
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(l8_to_l4_offset + (GFC_LOGICAL_4 *)(p8))
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#define GFC_INTEGER_4_HUGE \
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(GFC_INTEGER_4)((((GFC_UINTEGER_4)1) << 31) - 1)
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#define GFC_INTEGER_8_HUGE \
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(GFC_INTEGER_8)((((GFC_UINTEGER_8)1) << 63) - 1)
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#ifdef HAVE_GFC_INTEGER_16
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#define GFC_INTEGER_16_HUGE \
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(GFC_INTEGER_16)((((GFC_UINTEGER_16)1) << 127) - 1)
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#endif
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#define GFC_REAL_4_HUGE FLT_MAX
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#define GFC_REAL_8_HUGE DBL_MAX
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#ifdef HAVE_GFC_REAL_10
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#define GFC_REAL_10_HUGE LDBL_MAX
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#endif
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#ifdef HAVE_GFC_REAL_16
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#define GFC_REAL_16_HUGE LDBL_MAX
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#endif
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#ifndef GFC_MAX_DIMENSIONS
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#define GFC_MAX_DIMENSIONS 7
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#endif
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typedef struct descriptor_dimension
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{
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index_type stride;
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index_type lbound;
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index_type ubound;
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}
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descriptor_dimension;
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#define GFC_ARRAY_DESCRIPTOR(r, type) \
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struct {\
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type *data;\
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size_t offset;\
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index_type dtype;\
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descriptor_dimension dim[r];\
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}
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/* Commonly used array descriptor types. */
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typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, void) gfc_array_void;
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typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, char) gfc_array_char;
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typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_INTEGER_4) gfc_array_i4;
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typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_INTEGER_8) gfc_array_i8;
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#ifdef HAVE_GFC_INTEGER_16
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typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_INTEGER_16) gfc_array_i16;
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#endif
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typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_REAL_4) gfc_array_r4;
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typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_REAL_8) gfc_array_r8;
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#ifdef HAVE_GFC_REAL_10
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typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_REAL_10) gfc_array_r10;
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#endif
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#ifdef HAVE_GFC_REAL_16
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typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_REAL_16) gfc_array_r16;
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#endif
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typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_COMPLEX_4) gfc_array_c4;
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typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_COMPLEX_8) gfc_array_c8;
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#ifdef HAVE_GFC_COMPLEX_10
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typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_COMPLEX_10) gfc_array_c10;
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#endif
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#ifdef HAVE_GFC_COMPLEX_16
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typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_COMPLEX_16) gfc_array_c16;
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#endif
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typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_LOGICAL_4) gfc_array_l4;
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typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_LOGICAL_8) gfc_array_l8;
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#ifdef HAVE_GFC_LOGICAL_16
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typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, GFC_LOGICAL_16) gfc_array_l16;
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#endif
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#define GFC_DTYPE_RANK_MASK 0x07
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#define GFC_DTYPE_TYPE_SHIFT 3
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#define GFC_DTYPE_TYPE_MASK 0x38
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#define GFC_DTYPE_SIZE_SHIFT 6
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enum
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{
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GFC_DTYPE_UNKNOWN = 0,
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GFC_DTYPE_INTEGER,
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/* TODO: recognize logical types. */
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GFC_DTYPE_LOGICAL,
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GFC_DTYPE_REAL,
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GFC_DTYPE_COMPLEX,
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GFC_DTYPE_DERIVED,
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GFC_DTYPE_CHARACTER
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};
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#define GFC_DESCRIPTOR_RANK(desc) ((desc)->dtype & GFC_DTYPE_RANK_MASK)
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#define GFC_DESCRIPTOR_TYPE(desc) (((desc)->dtype & GFC_DTYPE_TYPE_MASK) \
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>> GFC_DTYPE_TYPE_SHIFT)
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#define GFC_DESCRIPTOR_SIZE(desc) ((desc)->dtype >> GFC_DTYPE_SIZE_SHIFT)
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#define GFC_DESCRIPTOR_DATA(desc) ((desc)->data)
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#define GFC_DESCRIPTOR_DTYPE(desc) ((desc)->dtype)
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/* Runtime library include. */
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#define stringize(x) expand_macro(x)
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#define expand_macro(x) # x
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/* Runtime options structure. */
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typedef struct
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{
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int stdin_unit, stdout_unit, stderr_unit, optional_plus;
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int allocate_init_flag, allocate_init_value;
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int locus;
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int separator_len;
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const char *separator;
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int mem_check;
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int use_stderr, all_unbuffered, default_recl;
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int fpu_round, fpu_precision, fpe;
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int sighup, sigint;
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}
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options_t;
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extern options_t options;
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internal_proto(options);
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/* Compile-time options that will influence the library. */
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typedef struct
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{
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int warn_std;
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int allow_std;
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}
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compile_options_t;
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extern compile_options_t compile_options;
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internal_proto(compile_options);
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extern void init_compile_options (void);
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internal_proto(init_compile_options);
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/* Structure for statement options. */
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typedef struct
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{
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const char *name;
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int value;
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}
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st_option;
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/* Runtime errors. The EOR and EOF errors are required to be negative. */
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typedef enum
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{
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ERROR_FIRST = -3, /* Marker for the first error. */
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ERROR_EOR = -2,
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ERROR_END = -1,
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ERROR_OK = 0, /* Indicates success, must be zero. */
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ERROR_OS, /* Operating system error, more info in errno. */
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ERROR_OPTION_CONFLICT,
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ERROR_BAD_OPTION,
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ERROR_MISSING_OPTION,
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ERROR_ALREADY_OPEN,
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ERROR_BAD_UNIT,
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ERROR_FORMAT,
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ERROR_BAD_ACTION,
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ERROR_ENDFILE,
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ERROR_BAD_US,
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ERROR_READ_VALUE,
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ERROR_READ_OVERFLOW,
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ERROR_ARRAY_STRIDE,
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ERROR_LAST /* Not a real error, the last error # + 1. */
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}
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error_codes;
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/* Flags to specify which standard/extension contains a feature.
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Keep them in sync with their counterparts in gcc/fortran/gfortran.h. */
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#define GFC_STD_LEGACY (1<<6) /* Backward compatibility. */
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#define GFC_STD_GNU (1<<5) /* GNU Fortran extension. */
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#define GFC_STD_F2003 (1<<4) /* New in F2003. */
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/* Note that no features were obsoleted nor deleted in F2003. */
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#define GFC_STD_F95 (1<<3) /* New in F95. */
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#define GFC_STD_F95_DEL (1<<2) /* Deleted in F95. */
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#define GFC_STD_F95_OBS (1<<1) /* Obsoleted in F95. */
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#define GFC_STD_F77 (1<<0) /* Up to and including F77. */
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/* Bitmasks for the various FPE that can be enabled.
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Keep them in sync with their counterparts in gcc/fortran/gfortran.h. */
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#define GFC_FPE_INVALID (1<<0)
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#define GFC_FPE_DENORMAL (1<<1)
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#define GFC_FPE_ZERO (1<<2)
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#define GFC_FPE_OVERFLOW (1<<3)
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#define GFC_FPE_UNDERFLOW (1<<4)
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#define GFC_FPE_PRECISION (1<<5)
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/* The filename and line number don't go inside the globals structure.
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They are set by the rest of the program and must be linked to. */
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/* Location of the current library call (optional). */
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extern unsigned line;
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iexport_data_proto(line);
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extern char *filename;
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iexport_data_proto(filename);
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/* Avoid conflicting prototypes of alloca() in system headers by using
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GCC's builtin alloca(). */
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#define gfc_alloca(x) __builtin_alloca(x)
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/* main.c */
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extern void library_start (void);
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internal_proto(library_start);
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extern void library_end (void);
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internal_proto(library_end);
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extern void set_args (int, char **);
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export_proto(set_args);
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extern void get_args (int *, char ***);
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internal_proto(get_args);
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/* error.c */
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#define GFC_ITOA_BUF_SIZE (sizeof (GFC_INTEGER_LARGEST) * 3 + 2)
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#define GFC_XTOA_BUF_SIZE (sizeof (GFC_UINTEGER_LARGEST) * 2 + 1)
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#define GFC_OTOA_BUF_SIZE (sizeof (GFC_INTEGER_LARGEST) * 3 + 1)
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#define GFC_BTOA_BUF_SIZE (sizeof (GFC_INTEGER_LARGEST) * 8 + 1)
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extern const char *gfc_itoa (GFC_INTEGER_LARGEST, char *, size_t);
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internal_proto(gfc_itoa);
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extern const char *xtoa (GFC_UINTEGER_LARGEST, char *, size_t);
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internal_proto(xtoa);
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extern void os_error (const char *) __attribute__ ((noreturn));
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internal_proto(os_error);
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extern void show_locus (void);
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internal_proto(show_locus);
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extern void runtime_error (const char *) __attribute__ ((noreturn));
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iexport_proto(runtime_error);
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extern void internal_error (const char *) __attribute__ ((noreturn));
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internal_proto(internal_error);
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extern const char *get_oserror (void);
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internal_proto(get_oserror);
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extern void sys_exit (int) __attribute__ ((noreturn));
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internal_proto(sys_exit);
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extern int st_printf (const char *, ...)
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__attribute__ ((format (printf, 1, 2)));
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internal_proto(st_printf);
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extern void st_sprintf (char *, const char *, ...)
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__attribute__ ((format (printf, 2, 3)));
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internal_proto(st_sprintf);
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extern const char *translate_error (int);
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internal_proto(translate_error);
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extern void generate_error (int, const char *);
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internal_proto(generate_error);
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/* fpu.c */
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extern void set_fpu (void);
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internal_proto(set_fpu);
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/* memory.c */
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extern void *get_mem (size_t) __attribute__ ((malloc));
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internal_proto(get_mem);
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extern void free_mem (void *);
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internal_proto(free_mem);
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extern void *internal_malloc_size (size_t);
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internal_proto(internal_malloc_size);
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extern void internal_free (void *);
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iexport_proto(internal_free);
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/* environ.c */
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extern int check_buffered (int);
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internal_proto(check_buffered);
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extern void init_variables (void);
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internal_proto(init_variables);
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extern void show_variables (void);
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internal_proto(show_variables);
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/* string.c */
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extern int find_option (const char *, int, const st_option *, const char *);
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internal_proto(find_option);
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extern int fstrlen (const char *, int);
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internal_proto(fstrlen);
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extern void fstrcpy (char *, int, const char *, int);
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internal_proto(fstrcpy);
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extern void cf_strcpy (char *, int, const char *);
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internal_proto(cf_strcpy);
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/* io.c */
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extern void init_units (void);
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internal_proto(init_units);
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extern void close_units (void);
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internal_proto(close_units);
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/* stop.c */
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extern void stop_numeric (GFC_INTEGER_4);
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iexport_proto(stop_numeric);
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/* reshape_packed.c */
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extern void reshape_packed (char *, index_type, const char *, index_type,
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const char *, index_type);
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|
internal_proto(reshape_packed);
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/* Repacking functions. */
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|
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/* ??? These eight aren't currently used by the compiler, though we
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certainly could do so. */
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GFC_INTEGER_4 *internal_pack_4 (gfc_array_i4 *);
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internal_proto(internal_pack_4);
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GFC_INTEGER_8 *internal_pack_8 (gfc_array_i8 *);
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|
internal_proto(internal_pack_8);
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|
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|
GFC_COMPLEX_4 *internal_pack_c4 (gfc_array_c4 *);
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|
internal_proto(internal_pack_c4);
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|
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|
GFC_COMPLEX_8 *internal_pack_c8 (gfc_array_c8 *);
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|
internal_proto(internal_pack_c8);
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|
|
|
extern void internal_unpack_4 (gfc_array_i4 *, const GFC_INTEGER_4 *);
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|
internal_proto(internal_unpack_4);
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|
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|
extern void internal_unpack_8 (gfc_array_i8 *, const GFC_INTEGER_8 *);
|
|
internal_proto(internal_unpack_8);
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|
|
|
extern void internal_unpack_c4 (gfc_array_c4 *, const GFC_COMPLEX_4 *);
|
|
internal_proto(internal_unpack_c4);
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|
|
|
extern void internal_unpack_c8 (gfc_array_c8 *, const GFC_COMPLEX_8 *);
|
|
internal_proto(internal_unpack_c8);
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|
|
|
/* string_intrinsics.c */
|
|
|
|
extern GFC_INTEGER_4 compare_string (GFC_INTEGER_4, const char *,
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|
GFC_INTEGER_4, const char *);
|
|
iexport_proto(compare_string);
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|
|
|
/* random.c */
|
|
|
|
extern void random_seed (GFC_INTEGER_4 * size, gfc_array_i4 * put,
|
|
gfc_array_i4 * get);
|
|
iexport_proto(random_seed);
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|
|
|
/* normalize.c */
|
|
|
|
extern GFC_REAL_4 normalize_r4_i4 (GFC_UINTEGER_4, GFC_UINTEGER_4);
|
|
internal_proto(normalize_r4_i4);
|
|
|
|
extern GFC_REAL_8 normalize_r8_i8 (GFC_UINTEGER_8, GFC_UINTEGER_8);
|
|
internal_proto(normalize_r8_i8);
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|
|
|
/* size.c */
|
|
|
|
typedef GFC_ARRAY_DESCRIPTOR (GFC_MAX_DIMENSIONS, void) array_t;
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|
|
|
extern index_type size0 (const array_t * array);
|
|
iexport_proto(size0);
|
|
|
|
#endif /* LIBGFOR_H */
|