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Diffstat (limited to 'gcc-4.2.1-5666.3/gcc/ginclude/float.h')
| -rw-r--r-- | gcc-4.2.1-5666.3/gcc/ginclude/float.h | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/gcc-4.2.1-5666.3/gcc/ginclude/float.h b/gcc-4.2.1-5666.3/gcc/ginclude/float.h new file mode 100644 index 000000000..1337f6ba6 --- /dev/null +++ b/gcc-4.2.1-5666.3/gcc/ginclude/float.h @@ -0,0 +1,164 @@ +/* Copyright (C) 2002 Free Software Foundation, Inc. + +This file is part of GCC. + +GCC 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. + +GCC 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 GCC; see the file COPYING. If not, write to +the Free Software Foundation, 51 Franklin Street, Fifth Floor, +Boston, MA 02110-1301, USA. */ + +/* As a special exception, if you include this header file into source + files compiled by GCC, this header file does not by itself cause + the resulting executable to be covered by the GNU General Public + License. This exception does not however invalidate any other + reasons why the executable file might be covered by the GNU General + Public License. */ + +/* + * ISO C Standard: 5.2.4.2.2 Characteristics of floating types <float.h> + */ + +#ifndef _FLOAT_H___ +#define _FLOAT_H___ + +/* Radix of exponent representation, b. */ +#undef FLT_RADIX +#define FLT_RADIX __FLT_RADIX__ + +/* Number of base-FLT_RADIX digits in the significand, p. */ +#undef FLT_MANT_DIG +#undef DBL_MANT_DIG +#undef LDBL_MANT_DIG +#define FLT_MANT_DIG __FLT_MANT_DIG__ +#define DBL_MANT_DIG __DBL_MANT_DIG__ +#define LDBL_MANT_DIG __LDBL_MANT_DIG__ + +/* Number of decimal digits, q, such that any floating-point number with q + decimal digits can be rounded into a floating-point number with p radix b + digits and back again without change to the q decimal digits, + + p * log10(b) if b is a power of 10 + floor((p - 1) * log10(b)) otherwise +*/ +#undef FLT_DIG +#undef DBL_DIG +#undef LDBL_DIG +#define FLT_DIG __FLT_DIG__ +#define DBL_DIG __DBL_DIG__ +#define LDBL_DIG __LDBL_DIG__ + +/* Minimum int x such that FLT_RADIX**(x-1) is a normalized float, emin */ +#undef FLT_MIN_EXP +#undef DBL_MIN_EXP +#undef LDBL_MIN_EXP +#define FLT_MIN_EXP __FLT_MIN_EXP__ +#define DBL_MIN_EXP __DBL_MIN_EXP__ +#define LDBL_MIN_EXP __LDBL_MIN_EXP__ + +/* Minimum negative integer such that 10 raised to that power is in the + range of normalized floating-point numbers, + + ceil(log10(b) * (emin - 1)) +*/ +#undef FLT_MIN_10_EXP +#undef DBL_MIN_10_EXP +#undef LDBL_MIN_10_EXP +#define FLT_MIN_10_EXP __FLT_MIN_10_EXP__ +#define DBL_MIN_10_EXP __DBL_MIN_10_EXP__ +#define LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__ + +/* Maximum int x such that FLT_RADIX**(x-1) is a representable float, emax. */ +#undef FLT_MAX_EXP +#undef DBL_MAX_EXP +#undef LDBL_MAX_EXP +#define FLT_MAX_EXP __FLT_MAX_EXP__ +#define DBL_MAX_EXP __DBL_MAX_EXP__ +#define LDBL_MAX_EXP __LDBL_MAX_EXP__ + +/* Maximum integer such that 10 raised to that power is in the range of + representable finite floating-point numbers, + + floor(log10((1 - b**-p) * b**emax)) +*/ +#undef FLT_MAX_10_EXP +#undef DBL_MAX_10_EXP +#undef LDBL_MAX_10_EXP +#define FLT_MAX_10_EXP __FLT_MAX_10_EXP__ +#define DBL_MAX_10_EXP __DBL_MAX_10_EXP__ +#define LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__ + +/* Maximum representable finite floating-point number, + + (1 - b**-p) * b**emax +*/ +#undef FLT_MAX +#undef DBL_MAX +#undef LDBL_MAX +#define FLT_MAX __FLT_MAX__ +#define DBL_MAX __DBL_MAX__ +#define LDBL_MAX __LDBL_MAX__ + +/* The difference between 1 and the least value greater than 1 that is + representable in the given floating point type, b**1-p. */ +#undef FLT_EPSILON +#undef DBL_EPSILON +#undef LDBL_EPSILON +#define FLT_EPSILON __FLT_EPSILON__ +#define DBL_EPSILON __DBL_EPSILON__ +#define LDBL_EPSILON __LDBL_EPSILON__ + +/* Minimum normalized positive floating-point number, b**(emin - 1). */ +#undef FLT_MIN +#undef DBL_MIN +#undef LDBL_MIN +#define FLT_MIN __FLT_MIN__ +#define DBL_MIN __DBL_MIN__ +#define LDBL_MIN __LDBL_MIN__ + +/* Addition rounds to 0: zero, 1: nearest, 2: +inf, 3: -inf, -1: unknown. */ +/* APPLE LOCAL begin 3399553 */ +/* This changes with calls to fesetround in <fenv.h>. */ +#undef FLT_ROUNDS +#define FLT_ROUNDS (__builtin_flt_rounds ()) +/* APPLE LOCAL end 3399553 */ + +#if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L +/* The floating-point expression evaluation method. + -1 indeterminate + 0 evaluate all operations and constants just to the range and + precision of the type + 1 evaluate operations and constants of type float and double + to the range and precision of the double type, evaluate + long double operations and constants to the range and + precision of the long double type + 2 evaluate all operations and constants to the range and + precision of the long double type + + ??? This ought to change with the setting of the fp control word; + the value provided by the compiler assumes the widest setting. */ +#undef FLT_EVAL_METHOD +#define FLT_EVAL_METHOD __FLT_EVAL_METHOD__ + +/* Number of decimal digits, n, such that any floating-point number in the + widest supported floating type with pmax radix b digits can be rounded + to a floating-point number with n decimal digits and back again without + change to the value, + + pmax * log10(b) if b is a power of 10 + ceil(1 + pmax * log10(b)) otherwise +*/ +#undef DECIMAL_DIG +#define DECIMAL_DIG __DECIMAL_DIG__ + +#endif /* C99 */ +#endif /* _FLOAT_H___ */ |