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Diffstat (limited to 'gnu/gcc2/lib/real.h')
| -rw-r--r-- | gnu/gcc2/lib/real.h | 363 |
1 files changed, 0 insertions, 363 deletions
diff --git a/gnu/gcc2/lib/real.h b/gnu/gcc2/lib/real.h deleted file mode 100644 index 4ac1822899e8..000000000000 --- a/gnu/gcc2/lib/real.h +++ /dev/null @@ -1,363 +0,0 @@ -/* Front-end tree definitions for GNU compiler. - Copyright (C) 1989, 1991 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, 675 Mass Ave, Cambridge, MA 02139, 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 - -/* 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 - -/* 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) || defined (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 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 XFmode support */ - -/* If emulation has been enabled by defining REAL_ARITHMETIC or by - setting LONG_DOUBLE_TYPE_SIZE to 96, 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 that are referenced here. */ -void earith (), ereal_from_uint (), ereal_from_int (), ereal_to_int (); -void etarldouble (), etardouble (); -long etarsingle (); -int ereal_cmp (), eroundi (), ereal_isneg (); -unsigned int eroundui (); -REAL_VALUE_TYPE etrunci (), etruncui (), ereal_ldexp (), ereal_atof (); -REAL_VALUE_TYPE ereal_negate (), ereal_truncate (); -REAL_VALUE_TYPE ereal_from_float (), ereal_from_double (); - -#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 (); -#define REAL_VALUE_TRUNCATE(mode, x) real_value_truncate (mode, x) - -/* These return int: */ -#define REAL_VALUE_FIX(x) (eroundi (x)) -#define REAL_VALUE_UNSIGNED_FIX(x) ((unsigned int) eroundui (x)) - -#define REAL_VALUE_ATOF 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 -#define REAL_VALUE_FROM_INT(d, i, j) (ereal_from_int (&d, i, j)) -#define REAL_VALUE_FROM_UNSIGNED_INT(d, i, j) (ereal_from_uint (&d, i, j)) - -/* IN is a REAL_VALUE_TYPE. OUT is an array of longs. */ -#define REAL_VALUE_TO_TARGET_LONG_DOUBLE(IN, OUT) (etarldouble ((IN), (OUT))) -#define REAL_VALUE_TO_TARGET_DOUBLE(IN, OUT) (etardouble ((IN), (OUT))) -/* d is an array of longs. */ -#define REAL_VALUE_FROM_TARGET_DOUBLE(d) (ereal_from_double (d)) -/* IN is a REAL_VALUE_TYPE. OUT is a long. */ -#define REAL_VALUE_TO_TARGET_SINGLE(IN, OUT) ((OUT) = etarsingle ((IN))) -/* f is a long. */ -#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 /* LONG_DOUBLE_TYPE_SIZE != 96 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 { float f = (float) (IN); \ - (OUT) = *(long *) &f; \ - } 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 -#if defined (HOST_WORDS_BIG_ENDIAN) == WORDS_BIG_ENDIAN -#define REAL_VALUE_TO_TARGET_DOUBLE(IN, OUT) \ -do { REAL_VALUE_TYPE in = (IN); /* Make sure it's not in a register. */\ - (OUT)[0] = ((long *) &in)[0]; \ - (OUT)[1] = ((long *) &in)[1]; \ - } while (0) -#else -#define REAL_VALUE_TO_TARGET_DOUBLE(IN, OUT) \ -do { REAL_VALUE_TYPE in = (IN); /* Make sure it's not in a register. */\ - (OUT)[1] = ((long *) &in)[0]; \ - (OUT)[0] = ((long *) &in)[1]; \ - } while (0) -#endif -#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 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, using any rounding mode. */ -#ifndef REAL_VALUE_FIX -#define REAL_VALUE_FIX(x) ((int) (x)) -#endif - -/* Convert a floating-point value to unsigned integer, using any rounding - mode. */ -#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) -#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 - -/* 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 (); - -#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 - -/* 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) - -/* Function to return a real value (not a tree node) - from a given integer constant. */ -REAL_VALUE_TYPE real_value_from_int_cst (); - -/* Given a CONST_DOUBLE in FROM, store into TO the value it represents. */ - -#define REAL_VALUE_FROM_CONST_DOUBLE(to, from) \ -do { union real_extract u; \ - bcopy (&CONST_DOUBLE_LOW ((from)), &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) - -/* 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 - -#endif /* Not REAL_H_INCLUDED */ |