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diff --git a/contrib/gcc/real.h b/contrib/gcc/real.h
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-/* Definitions of floating-point access for GNU compiler.
- Copyright (C) 1989, 91, 94, 96-98, 1999 Free Software Foundation, Inc.
-
-This file is part of GNU CC.
-
-GNU CC 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 CC 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 CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
-
-#ifndef REAL_H_INCLUDED
-#define REAL_H_INCLUDED
-
-/* Define codes for all the float formats that we know of. */
-#define UNKNOWN_FLOAT_FORMAT 0
-#define IEEE_FLOAT_FORMAT 1
-#define VAX_FLOAT_FORMAT 2
-#define IBM_FLOAT_FORMAT 3
-#define C4X_FLOAT_FORMAT 4
-
-/* Default to IEEE float if not specified. Nearly all machines use it. */
-
-#ifndef TARGET_FLOAT_FORMAT
-#define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT
-#endif
-
-#ifndef HOST_FLOAT_FORMAT
-#define HOST_FLOAT_FORMAT IEEE_FLOAT_FORMAT
-#endif
-
-#if TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT
-#define REAL_INFINITY
-#endif
-
-/* If FLOAT_WORDS_BIG_ENDIAN and HOST_FLOAT_WORDS_BIG_ENDIAN are not defined
- in the header files, then this implies the word-endianness is the same as
- for integers. */
-
-/* This is defined 0 or 1, like WORDS_BIG_ENDIAN. */
-#ifndef FLOAT_WORDS_BIG_ENDIAN
-#define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
-#endif
-
-/* This is defined 0 or 1, unlike HOST_WORDS_BIG_ENDIAN. */
-#ifndef HOST_FLOAT_WORDS_BIG_ENDIAN
-#ifdef HOST_WORDS_BIG_ENDIAN
-#define HOST_FLOAT_WORDS_BIG_ENDIAN 1
-#else
-#define HOST_FLOAT_WORDS_BIG_ENDIAN 0
-#endif
-#endif
-
-/* Defining REAL_ARITHMETIC invokes a floating point emulator
- that can produce a target machine format differing by more
- than just endian-ness from the host's format. The emulator
- is also used to support extended real XFmode. */
-#ifndef LONG_DOUBLE_TYPE_SIZE
-#define LONG_DOUBLE_TYPE_SIZE 64
-#endif
-#if (LONG_DOUBLE_TYPE_SIZE == 96) || (LONG_DOUBLE_TYPE_SIZE == 128)
-#ifndef REAL_ARITHMETIC
-#define REAL_ARITHMETIC
-#endif
-#endif
-#ifdef REAL_ARITHMETIC
-/* **** Start of software floating point emulator interface macros **** */
-
-/* Support 80-bit extended real XFmode if LONG_DOUBLE_TYPE_SIZE
- has been defined to be 96 in the tm.h machine file. */
-#if (LONG_DOUBLE_TYPE_SIZE == 96)
-#define REAL_IS_NOT_DOUBLE
-#define REAL_ARITHMETIC
-typedef struct {
- HOST_WIDE_INT r[(11 + sizeof (HOST_WIDE_INT))/(sizeof (HOST_WIDE_INT))];
-} realvaluetype;
-#define REAL_VALUE_TYPE realvaluetype
-
-#else /* no XFmode support */
-
-#if (LONG_DOUBLE_TYPE_SIZE == 128)
-
-#define REAL_IS_NOT_DOUBLE
-#define REAL_ARITHMETIC
-typedef struct {
- HOST_WIDE_INT r[(19 + sizeof (HOST_WIDE_INT))/(sizeof (HOST_WIDE_INT))];
-} realvaluetype;
-#define REAL_VALUE_TYPE realvaluetype
-
-#else /* not TFmode */
-
-#if HOST_FLOAT_FORMAT != TARGET_FLOAT_FORMAT
-/* If no XFmode support, then a REAL_VALUE_TYPE is 64 bits wide
- but it is not necessarily a host machine double. */
-#define REAL_IS_NOT_DOUBLE
-typedef struct {
- HOST_WIDE_INT r[(7 + sizeof (HOST_WIDE_INT))/(sizeof (HOST_WIDE_INT))];
-} realvaluetype;
-#define REAL_VALUE_TYPE realvaluetype
-#else
-/* If host and target formats are compatible, then a REAL_VALUE_TYPE
- is actually a host machine double. */
-#define REAL_VALUE_TYPE double
-#endif
-
-#endif /* no TFmode support */
-#endif /* no XFmode support */
-
-extern int significand_size PROTO((enum machine_mode));
-
-/* If emulation has been enabled by defining REAL_ARITHMETIC or by
- setting LONG_DOUBLE_TYPE_SIZE to 96 or 128, then define macros so that
- they invoke emulator functions. This will succeed only if the machine
- files have been updated to use these macros in place of any
- references to host machine `double' or `float' types. */
-#ifdef REAL_ARITHMETIC
-#undef REAL_ARITHMETIC
-#define REAL_ARITHMETIC(value, code, d1, d2) \
- earith (&(value), (code), &(d1), &(d2))
-
-/* Declare functions in real.c. */
-extern void earith PROTO((REAL_VALUE_TYPE *, int,
- REAL_VALUE_TYPE *, REAL_VALUE_TYPE *));
-extern REAL_VALUE_TYPE etrunci PROTO((REAL_VALUE_TYPE));
-extern REAL_VALUE_TYPE etruncui PROTO((REAL_VALUE_TYPE));
-extern REAL_VALUE_TYPE ereal_atof PROTO((const char *, enum machine_mode));
-extern REAL_VALUE_TYPE ereal_negate PROTO((REAL_VALUE_TYPE));
-extern HOST_WIDE_INT efixi PROTO((REAL_VALUE_TYPE));
-extern unsigned HOST_WIDE_INT efixui PROTO((REAL_VALUE_TYPE));
-extern void ereal_from_int PROTO((REAL_VALUE_TYPE *,
- HOST_WIDE_INT, HOST_WIDE_INT,
- enum machine_mode));
-extern void ereal_from_uint PROTO((REAL_VALUE_TYPE *,
- unsigned HOST_WIDE_INT,
- unsigned HOST_WIDE_INT,
- enum machine_mode));
-extern void ereal_to_int PROTO((HOST_WIDE_INT *, HOST_WIDE_INT *,
- REAL_VALUE_TYPE));
-extern REAL_VALUE_TYPE ereal_ldexp PROTO((REAL_VALUE_TYPE, int));
-
-extern void etartdouble PROTO((REAL_VALUE_TYPE, long *));
-extern void etarldouble PROTO((REAL_VALUE_TYPE, long *));
-extern void etardouble PROTO((REAL_VALUE_TYPE, long *));
-extern long etarsingle PROTO((REAL_VALUE_TYPE));
-extern void ereal_to_decimal PROTO((REAL_VALUE_TYPE, char *));
-extern int ereal_cmp PROTO((REAL_VALUE_TYPE, REAL_VALUE_TYPE));
-extern int ereal_isneg PROTO((REAL_VALUE_TYPE));
-extern REAL_VALUE_TYPE ereal_unto_float PROTO((long));
-extern REAL_VALUE_TYPE ereal_unto_double PROTO((long *));
-extern REAL_VALUE_TYPE ereal_from_float PROTO((HOST_WIDE_INT));
-extern REAL_VALUE_TYPE ereal_from_double PROTO((HOST_WIDE_INT *));
-
-#define REAL_VALUES_EQUAL(x, y) (ereal_cmp ((x), (y)) == 0)
-/* true if x < y : */
-#define REAL_VALUES_LESS(x, y) (ereal_cmp ((x), (y)) == -1)
-#define REAL_VALUE_LDEXP(x, n) ereal_ldexp (x, n)
-
-/* These return REAL_VALUE_TYPE: */
-#define REAL_VALUE_RNDZINT(x) (etrunci (x))
-#define REAL_VALUE_UNSIGNED_RNDZINT(x) (etruncui (x))
-extern REAL_VALUE_TYPE real_value_truncate PROTO ((enum machine_mode,
- REAL_VALUE_TYPE));
-#define REAL_VALUE_TRUNCATE(mode, x) real_value_truncate (mode, x)
-
-/* These return HOST_WIDE_INT: */
-/* Convert a floating-point value to integer, rounding toward zero. */
-#define REAL_VALUE_FIX(x) (efixi (x))
-/* Convert a floating-point value to unsigned integer, rounding
- toward zero. */
-#define REAL_VALUE_UNSIGNED_FIX(x) (efixui (x))
-
-/* Convert ASCII string S to floating point in mode M.
- Decimal input uses ATOF. Hexadecimal uses HTOF. */
-#define REAL_VALUE_ATOF ereal_atof
-#define REAL_VALUE_HTOF ereal_atof
-
-#define REAL_VALUE_NEGATE ereal_negate
-
-#define REAL_VALUE_MINUS_ZERO(x) \
- ((ereal_cmp (x, dconst0) == 0) && (ereal_isneg (x) != 0 ))
-
-#define REAL_VALUE_TO_INT ereal_to_int
-
-/* Here the cast to HOST_WIDE_INT sign-extends arguments such as ~0. */
-#define REAL_VALUE_FROM_INT(d, lo, hi, mode) \
- ereal_from_int (&d, (HOST_WIDE_INT) (lo), (HOST_WIDE_INT) (hi), mode)
-
-#define REAL_VALUE_FROM_UNSIGNED_INT(d, lo, hi, mode) \
- ereal_from_uint (&d, lo, hi, mode)
-
-/* IN is a REAL_VALUE_TYPE. OUT is an array of longs. */
-#if LONG_DOUBLE_TYPE_SIZE == 96
-#define REAL_VALUE_TO_TARGET_LONG_DOUBLE(IN, OUT) (etarldouble ((IN), (OUT)))
-#else
-#define REAL_VALUE_TO_TARGET_LONG_DOUBLE(IN, OUT) (etartdouble ((IN), (OUT)))
-#endif
-#define REAL_VALUE_TO_TARGET_DOUBLE(IN, OUT) (etardouble ((IN), (OUT)))
-
-/* IN is a REAL_VALUE_TYPE. OUT is a long. */
-#define REAL_VALUE_TO_TARGET_SINGLE(IN, OUT) ((OUT) = etarsingle ((IN)))
-
-/* Inverse of REAL_VALUE_TO_TARGET_DOUBLE. */
-#define REAL_VALUE_UNTO_TARGET_DOUBLE(d) (ereal_unto_double (d))
-
-/* Inverse of REAL_VALUE_TO_TARGET_SINGLE. */
-#define REAL_VALUE_UNTO_TARGET_SINGLE(f) (ereal_unto_float (f))
-
-/* d is an array of HOST_WIDE_INT that holds a double precision
- value in the target computer's floating point format. */
-#define REAL_VALUE_FROM_TARGET_DOUBLE(d) (ereal_from_double (d))
-
-/* f is a HOST_WIDE_INT containing a single precision target float value. */
-#define REAL_VALUE_FROM_TARGET_SINGLE(f) (ereal_from_float (f))
-
-/* Conversions to decimal ASCII string. */
-#define REAL_VALUE_TO_DECIMAL(r, fmt, s) (ereal_to_decimal (r, s))
-
-#endif /* REAL_ARITHMETIC defined */
-
-/* **** End of software floating point emulator interface macros **** */
-#else /* No XFmode or TFmode and REAL_ARITHMETIC not defined */
-
-/* old interface */
-#ifdef REAL_ARITHMETIC
-/* Defining REAL_IS_NOT_DOUBLE breaks certain initializations
- when REAL_ARITHMETIC etc. are not defined. */
-
-/* Now see if the host and target machines use the same format.
- If not, define REAL_IS_NOT_DOUBLE (even if we end up representing
- reals as doubles because we have no better way in this cross compiler.)
- This turns off various optimizations that can happen when we know the
- compiler's float format matches the target's float format.
- */
-#if HOST_FLOAT_FORMAT != TARGET_FLOAT_FORMAT
-#define REAL_IS_NOT_DOUBLE
-#ifndef REAL_VALUE_TYPE
-typedef struct {
- HOST_WIDE_INT r[sizeof (double)/sizeof (HOST_WIDE_INT)];
- } realvaluetype;
-#define REAL_VALUE_TYPE realvaluetype
-#endif /* no REAL_VALUE_TYPE */
-#endif /* formats differ */
-#endif /* 0 */
-
-#endif /* emulator not used */
-
-/* If we are not cross-compiling, use a `double' to represent the
- floating-point value. Otherwise, use some other type
- (probably a struct containing an array of longs). */
-#ifndef REAL_VALUE_TYPE
-#define REAL_VALUE_TYPE double
-#else
-#define REAL_IS_NOT_DOUBLE
-#endif
-
-#if HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT
-
-/* Convert a type `double' value in host format first to a type `float'
- value in host format and then to a single type `long' value which
- is the bitwise equivalent of the `float' value. */
-#ifndef REAL_VALUE_TO_TARGET_SINGLE
-#define REAL_VALUE_TO_TARGET_SINGLE(IN, OUT) \
-do { \
- union { \
- float f; \
- HOST_WIDE_INT l; \
- } u; \
- if (sizeof(HOST_WIDE_INT) < sizeof(float)) \
- abort(); \
- u.l = 0; \
- u.f = (IN); \
- (OUT) = u.l; \
-} while (0)
-#endif
-
-/* Convert a type `double' value in host format to a pair of type `long'
- values which is its bitwise equivalent, but put the two words into
- proper word order for the target. */
-#ifndef REAL_VALUE_TO_TARGET_DOUBLE
-#define REAL_VALUE_TO_TARGET_DOUBLE(IN, OUT) \
-do { \
- union { \
- REAL_VALUE_TYPE f; \
- HOST_WIDE_INT l[2]; \
- } u; \
- if (sizeof(HOST_WIDE_INT) * 2 < sizeof(REAL_VALUE_TYPE)) \
- abort(); \
- u.l[0] = u.l[1] = 0; \
- u.f = (IN); \
- if (HOST_FLOAT_WORDS_BIG_ENDIAN == FLOAT_WORDS_BIG_ENDIAN) \
- (OUT)[0] = u.l[0], (OUT)[1] = u.l[1]; \
- else \
- (OUT)[1] = u.l[0], (OUT)[0] = u.l[1]; \
-} while (0)
-#endif
-#endif /* HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT */
-
-/* In this configuration, double and long double are the same. */
-#ifndef REAL_VALUE_TO_TARGET_LONG_DOUBLE
-#define REAL_VALUE_TO_TARGET_LONG_DOUBLE(a, b) REAL_VALUE_TO_TARGET_DOUBLE (a, b)
-#endif
-
-/* Compare two floating-point objects for bitwise identity.
- This is not the same as comparing for equality on IEEE hosts:
- -0.0 equals 0.0 but they are not identical, and conversely
- two NaNs might be identical but they cannot be equal. */
-#define REAL_VALUES_IDENTICAL(x, y) \
- (!bcmp ((char *) &(x), (char *) &(y), sizeof (REAL_VALUE_TYPE)))
-
-/* Compare two floating-point values for equality. */
-#ifndef REAL_VALUES_EQUAL
-#define REAL_VALUES_EQUAL(x, y) ((x) == (y))
-#endif
-
-/* Compare two floating-point values for less than. */
-#ifndef REAL_VALUES_LESS
-#define REAL_VALUES_LESS(x, y) ((x) < (y))
-#endif
-
-/* Truncate toward zero to an integer floating-point value. */
-#ifndef REAL_VALUE_RNDZINT
-#define REAL_VALUE_RNDZINT(x) ((double) ((int) (x)))
-#endif
-
-/* Truncate toward zero to an unsigned integer floating-point value. */
-#ifndef REAL_VALUE_UNSIGNED_RNDZINT
-#define REAL_VALUE_UNSIGNED_RNDZINT(x) ((double) ((unsigned int) (x)))
-#endif
-
-/* Convert a floating-point value to integer, rounding toward zero. */
-#ifndef REAL_VALUE_FIX
-#define REAL_VALUE_FIX(x) ((int) (x))
-#endif
-
-/* Convert a floating-point value to unsigned integer, rounding
- toward zero. */
-#ifndef REAL_VALUE_UNSIGNED_FIX
-#define REAL_VALUE_UNSIGNED_FIX(x) ((unsigned int) (x))
-#endif
-
-/* Scale X by Y powers of 2. */
-#ifndef REAL_VALUE_LDEXP
-#define REAL_VALUE_LDEXP(x, y) ldexp (x, y)
-extern double ldexp ();
-#endif
-
-/* Convert the string X to a floating-point value. */
-#ifndef REAL_VALUE_ATOF
-#if 1
-/* Use real.c to convert decimal numbers to binary, ... */
-REAL_VALUE_TYPE ereal_atof ();
-#define REAL_VALUE_ATOF(x, s) ereal_atof (x, s)
-/* Could use ereal_atof here for hexadecimal floats too, but real_hex_to_f
- is OK and it uses faster native fp arithmetic. */
-/* #define REAL_VALUE_HTOF(x, s) ereal_atof (x, s) */
-#else
-/* ... or, if you like the host computer's atof, go ahead and use it: */
-#define REAL_VALUE_ATOF(x, s) atof (x)
-#if defined (MIPSEL) || defined (MIPSEB)
-/* MIPS compiler can't handle parens around the function name.
- This problem *does not* appear to be connected with any
- macro definition for atof. It does not seem there is one. */
-extern double atof ();
-#else
-extern double (atof) ();
-#endif
-#endif
-#endif
-
-/* Hexadecimal floating constant input for use with host computer's
- fp arithmetic. */
-#ifndef REAL_VALUE_HTOF
-extern REAL_VALUE_TYPE real_hex_to_f PROTO((char *, enum machine_mode));
-#define REAL_VALUE_HTOF(s,m) real_hex_to_f(s,m)
-#endif
-
-/* Negate the floating-point value X. */
-#ifndef REAL_VALUE_NEGATE
-#define REAL_VALUE_NEGATE(x) (- (x))
-#endif
-
-/* Truncate the floating-point value X to mode MODE. This is correct only
- for the most common case where the host and target have objects of the same
- size and where `float' is SFmode. */
-
-/* Don't use REAL_VALUE_TRUNCATE directly--always call real_value_truncate. */
-extern REAL_VALUE_TYPE real_value_truncate PROTO((enum machine_mode, REAL_VALUE_TYPE));
-
-#ifndef REAL_VALUE_TRUNCATE
-#define REAL_VALUE_TRUNCATE(mode, x) \
- (GET_MODE_BITSIZE (mode) == sizeof (float) * HOST_BITS_PER_CHAR \
- ? (float) (x) : (x))
-#endif
-
-/* Determine whether a floating-point value X is infinite. */
-#ifndef REAL_VALUE_ISINF
-#define REAL_VALUE_ISINF(x) (target_isinf (x))
-#endif
-
-/* Determine whether a floating-point value X is a NaN. */
-#ifndef REAL_VALUE_ISNAN
-#define REAL_VALUE_ISNAN(x) (target_isnan (x))
-#endif
-
-/* Determine whether a floating-point value X is negative. */
-#ifndef REAL_VALUE_NEGATIVE
-#define REAL_VALUE_NEGATIVE(x) (target_negative (x))
-#endif
-
-extern int target_isnan PROTO ((REAL_VALUE_TYPE));
-extern int target_isinf PROTO ((REAL_VALUE_TYPE));
-extern int target_negative PROTO ((REAL_VALUE_TYPE));
-
-/* Determine whether a floating-point value X is minus 0. */
-#ifndef REAL_VALUE_MINUS_ZERO
-#define REAL_VALUE_MINUS_ZERO(x) ((x) == 0 && REAL_VALUE_NEGATIVE (x))
-#endif
-
-/* Constant real values 0, 1, 2, and -1. */
-
-extern REAL_VALUE_TYPE dconst0;
-extern REAL_VALUE_TYPE dconst1;
-extern REAL_VALUE_TYPE dconst2;
-extern REAL_VALUE_TYPE dconstm1;
-
-/* Union type used for extracting real values from CONST_DOUBLEs
- or putting them in. */
-
-union real_extract
-{
- REAL_VALUE_TYPE d;
- HOST_WIDE_INT i[sizeof (REAL_VALUE_TYPE) / sizeof (HOST_WIDE_INT)];
-};
-
-/* For a CONST_DOUBLE:
- The usual two ints that hold the value.
- For a DImode, that is all there are;
- and CONST_DOUBLE_LOW is the low-order word and ..._HIGH the high-order.
- For a float, the number of ints varies,
- and CONST_DOUBLE_LOW is the one that should come first *in memory*.
- So use &CONST_DOUBLE_LOW(r) as the address of an array of ints. */
-#define CONST_DOUBLE_LOW(r) XWINT (r, 2)
-#define CONST_DOUBLE_HIGH(r) XWINT (r, 3)
-
-/* Link for chain of all CONST_DOUBLEs in use in current function. */
-#define CONST_DOUBLE_CHAIN(r) XEXP (r, 1)
-/* The MEM which represents this CONST_DOUBLE's value in memory,
- or const0_rtx if no MEM has been made for it yet,
- or cc0_rtx if it is not on the chain. */
-#define CONST_DOUBLE_MEM(r) XEXP (r, 0)
-
-/* Given a CONST_DOUBLE in FROM, store into TO the value it represents. */
-/* Function to return a real value (not a tree node)
- from a given integer constant. */
-union tree_node;
-REAL_VALUE_TYPE real_value_from_int_cst PROTO ((union tree_node *,
- union tree_node *));
-
-#define REAL_VALUE_FROM_CONST_DOUBLE(to, from) \
-do { union real_extract u; \
- bcopy ((char *) &CONST_DOUBLE_LOW ((from)), (char *) &u, sizeof u); \
- to = u.d; } while (0)
-
-/* Return a CONST_DOUBLE with value R and mode M. */
-
-#define CONST_DOUBLE_FROM_REAL_VALUE(r, m) immed_real_const_1 (r, m)
-extern struct rtx_def *immed_real_const_1 PROTO((REAL_VALUE_TYPE,
- enum machine_mode));
-
-
-/* Convert a floating point value `r', that can be interpreted
- as a host machine float or double, to a decimal ASCII string `s'
- using printf format string `fmt'. */
-#ifndef REAL_VALUE_TO_DECIMAL
-#define REAL_VALUE_TO_DECIMAL(r, fmt, s) (sprintf (s, fmt, r))
-#endif
-
-/* Replace R by 1/R in the given machine mode, if the result is exact. */
-extern int exact_real_inverse PROTO((enum machine_mode, REAL_VALUE_TYPE *));
-
-extern void debug_real PROTO ((REAL_VALUE_TYPE));
-
-/* In varasm.c */
-extern void assemble_real PROTO ((REAL_VALUE_TYPE,
- enum machine_mode));
-#endif /* Not REAL_H_INCLUDED */
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