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/* Copyright (C) 2002-2021 Free Software Foundation, Inc. |
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|
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This file is part of GCC. |
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|
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GCC is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 3, or (at your option) |
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any later version. |
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|
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GCC 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 General Public License for more details. |
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|
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Under Section 7 of GPL version 3, you are granted additional |
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permissions described in the GCC Runtime Library Exception, version |
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3.1, as published by the Free Software Foundation. |
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|
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You should have received a copy of the GNU General Public License and |
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a copy of the GCC Runtime Library Exception along with this program; |
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
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<http://www.gnu.org/licenses/>. */ |
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|
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/* |
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* ISO C Standard: 5.2.4.2.2 Characteristics of floating types <float.h> |
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*/ |
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|
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#ifndef _FLOAT_H___ |
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#define _FLOAT_H___ |
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|
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/* Radix of exponent representation, b. */ |
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#undef FLT_RADIX |
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#define FLT_RADIX __FLT_RADIX__ |
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|
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/* Number of base-FLT_RADIX digits in the significand, p. */ |
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#undef FLT_MANT_DIG |
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#undef DBL_MANT_DIG |
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#undef LDBL_MANT_DIG |
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#define FLT_MANT_DIG __FLT_MANT_DIG__ |
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#define DBL_MANT_DIG __DBL_MANT_DIG__ |
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#define LDBL_MANT_DIG __LDBL_MANT_DIG__ |
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|
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/* Number of decimal digits, q, such that any floating-point number with q |
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decimal digits can be rounded into a floating-point number with p radix b |
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digits and back again without change to the q decimal digits, |
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|
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p * log10(b) if b is a power of 10 |
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floor((p - 1) * log10(b)) otherwise |
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*/ |
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#undef FLT_DIG |
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#undef DBL_DIG |
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#undef LDBL_DIG |
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#define FLT_DIG __FLT_DIG__ |
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#define DBL_DIG __DBL_DIG__ |
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#define LDBL_DIG __LDBL_DIG__ |
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|
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/* Minimum int x such that FLT_RADIX**(x-1) is a normalized float, emin */ |
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#undef FLT_MIN_EXP |
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#undef DBL_MIN_EXP |
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#undef LDBL_MIN_EXP |
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#define FLT_MIN_EXP __FLT_MIN_EXP__ |
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#define DBL_MIN_EXP __DBL_MIN_EXP__ |
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#define LDBL_MIN_EXP __LDBL_MIN_EXP__ |
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|
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/* Minimum negative integer such that 10 raised to that power is in the |
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range of normalized floating-point numbers, |
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|
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ceil(log10(b) * (emin - 1)) |
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*/ |
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#undef FLT_MIN_10_EXP |
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#undef DBL_MIN_10_EXP |
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#undef LDBL_MIN_10_EXP |
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#define FLT_MIN_10_EXP __FLT_MIN_10_EXP__ |
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#define DBL_MIN_10_EXP __DBL_MIN_10_EXP__ |
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#define LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__ |
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|
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/* Maximum int x such that FLT_RADIX**(x-1) is a representable float, emax. */ |
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#undef FLT_MAX_EXP |
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#undef DBL_MAX_EXP |
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#undef LDBL_MAX_EXP |
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#define FLT_MAX_EXP __FLT_MAX_EXP__ |
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#define DBL_MAX_EXP __DBL_MAX_EXP__ |
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#define LDBL_MAX_EXP __LDBL_MAX_EXP__ |
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|
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/* Maximum integer such that 10 raised to that power is in the range of |
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representable finite floating-point numbers, |
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|
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floor(log10((1 - b**-p) * b**emax)) |
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*/ |
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#undef FLT_MAX_10_EXP |
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#undef DBL_MAX_10_EXP |
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#undef LDBL_MAX_10_EXP |
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#define FLT_MAX_10_EXP __FLT_MAX_10_EXP__ |
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#define DBL_MAX_10_EXP __DBL_MAX_10_EXP__ |
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#define LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__ |
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|
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/* Maximum representable finite floating-point number, |
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|
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(1 - b**-p) * b**emax |
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*/ |
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#undef FLT_MAX |
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#undef DBL_MAX |
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#undef LDBL_MAX |
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#define FLT_MAX __FLT_MAX__ |
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#define DBL_MAX __DBL_MAX__ |
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#define LDBL_MAX __LDBL_MAX__ |
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|
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/* The difference between 1 and the least value greater than 1 that is |
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representable in the given floating point type, b**1-p. */ |
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#undef FLT_EPSILON |
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#undef DBL_EPSILON |
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#undef LDBL_EPSILON |
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#define FLT_EPSILON __FLT_EPSILON__ |
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#define DBL_EPSILON __DBL_EPSILON__ |
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#define LDBL_EPSILON __LDBL_EPSILON__ |
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|
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/* Minimum normalized positive floating-point number, b**(emin - 1). */ |
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#undef FLT_MIN |
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#undef DBL_MIN |
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#undef LDBL_MIN |
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#define FLT_MIN __FLT_MIN__ |
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#define DBL_MIN __DBL_MIN__ |
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#define LDBL_MIN __LDBL_MIN__ |
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|
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/* Addition rounds to 0: zero, 1: nearest, 2: +inf, 3: -inf, -1: unknown. */ |
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/* ??? This is supposed to change with calls to fesetround in <fenv.h>. */ |
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#undef FLT_ROUNDS |
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#define FLT_ROUNDS 1 |
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|
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#if (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) \ |
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|| (defined (__cplusplus) && __cplusplus >= 201103L) |
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/* The floating-point expression evaluation method. The precise |
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definitions of these values are generalised to include support for |
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the interchange and extended types defined in ISO/IEC TS 18661-3. |
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Prior to this (for C99/C11) the definitions were: |
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|
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-1 indeterminate |
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0 evaluate all operations and constants just to the range and |
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precision of the type |
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1 evaluate operations and constants of type float and double |
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to the range and precision of the double type, evaluate |
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long double operations and constants to the range and |
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precision of the long double type |
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2 evaluate all operations and constants to the range and |
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precision of the long double type |
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|
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The TS 18661-3 definitions are: |
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|
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-1 indeterminate |
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0 evaluate all operations and constants, whose semantic type has |
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at most the range and precision of float, to the range and |
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precision of float; evaluate all other operations and constants |
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to the range and precision of the semantic type. |
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1 evaluate all operations and constants, whose semantic type has |
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at most the range and precision of double, to the range and |
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precision of double; evaluate all other operations and constants |
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to the range and precision of the semantic type. |
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2 evaluate all operations and constants, whose semantic type has |
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at most the range and precision of long double, to the range and |
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precision of long double; evaluate all other operations and |
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constants to the range and precision of the semantic type. |
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N where _FloatN is a supported interchange floating type |
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evaluate all operations and constants, whose semantic type has |
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at most the range and precision of the _FloatN type, to the |
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range and precision of the _FloatN type; evaluate all other |
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operations and constants to the range and precision of the |
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semantic type. |
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N + 1, where _FloatNx is a supported extended floating type |
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evaluate operations and constants, whose semantic type has at |
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most the range and precision of the _FloatNx type, to the range |
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and precision of the _FloatNx type; evaluate all other |
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operations and constants to the range and precision of the |
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semantic type. |
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|
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The compiler predefines two macros: |
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|
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__FLT_EVAL_METHOD__ |
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Which, depending on the value given for |
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-fpermitted-flt-eval-methods, may be limited to only those values |
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for FLT_EVAL_METHOD defined in C99/C11. |
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|
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__FLT_EVAL_METHOD_TS_18661_3__ |
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Which always permits the values for FLT_EVAL_METHOD defined in |
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ISO/IEC TS 18661-3. |
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|
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Here we want to use __FLT_EVAL_METHOD__, unless |
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__STDC_WANT_IEC_60559_TYPES_EXT__ is defined, in which case the user |
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is specifically asking for the ISO/IEC TS 18661-3 types, so we use |
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__FLT_EVAL_METHOD_TS_18661_3__. |
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|
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??? This ought to change with the setting of the fp control word; |
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the value provided by the compiler assumes the widest setting. */ |
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#undef FLT_EVAL_METHOD |
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#ifdef __STDC_WANT_IEC_60559_TYPES_EXT__ |
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#define FLT_EVAL_METHOD __FLT_EVAL_METHOD_TS_18661_3__ |
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#else |
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#define FLT_EVAL_METHOD __FLT_EVAL_METHOD__ |
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#endif |
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|
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/* Number of decimal digits, n, such that any floating-point number in the |
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widest supported floating type with pmax radix b digits can be rounded |
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to a floating-point number with n decimal digits and back again without |
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change to the value, |
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|
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pmax * log10(b) if b is a power of 10 |
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ceil(1 + pmax * log10(b)) otherwise |
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*/ |
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#undef DECIMAL_DIG |
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#define DECIMAL_DIG __DECIMAL_DIG__ |
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|
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#endif /* C99 */ |
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|
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#if (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) \ |
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|| (defined (__cplusplus) && __cplusplus >= 201703L) |
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/* Versions of DECIMAL_DIG for each floating-point type. */ |
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#undef FLT_DECIMAL_DIG |
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#undef DBL_DECIMAL_DIG |
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#undef LDBL_DECIMAL_DIG |
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#define FLT_DECIMAL_DIG __FLT_DECIMAL_DIG__ |
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#define DBL_DECIMAL_DIG __DBL_DECIMAL_DIG__ |
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#define LDBL_DECIMAL_DIG __LDBL_DECIMAL_DIG__ |
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|
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/* Whether types support subnormal numbers. */ |
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#undef FLT_HAS_SUBNORM |
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#undef DBL_HAS_SUBNORM |
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#undef LDBL_HAS_SUBNORM |
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#define FLT_HAS_SUBNORM __FLT_HAS_DENORM__ |
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#define DBL_HAS_SUBNORM __DBL_HAS_DENORM__ |
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#define LDBL_HAS_SUBNORM __LDBL_HAS_DENORM__ |
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|
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/* Minimum positive values, including subnormals. */ |
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#undef FLT_TRUE_MIN |
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#undef DBL_TRUE_MIN |
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#undef LDBL_TRUE_MIN |
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#define FLT_TRUE_MIN __FLT_DENORM_MIN__ |
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#define DBL_TRUE_MIN __DBL_DENORM_MIN__ |
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#define LDBL_TRUE_MIN __LDBL_DENORM_MIN__ |
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|
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#endif /* C11 */ |
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|
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#if defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L |
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/* Maximum finite positive value with MANT_DIG digits in the |
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significand taking their maximum value. */ |
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#undef FLT_NORM_MAX |
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#undef DBL_NORM_MAX |
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#undef LDBL_NORM_MAX |
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#define FLT_NORM_MAX __FLT_NORM_MAX__ |
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#define DBL_NORM_MAX __DBL_NORM_MAX__ |
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#define LDBL_NORM_MAX __LDBL_NORM_MAX__ |
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|
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/* Whether each type matches an IEC 60559 format (1 for format, 2 for |
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format and operations). */ |
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#undef FLT_IS_IEC_60559 |
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#undef DBL_IS_IEC_60559 |
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#undef LDBL_IS_IEC_60559 |
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#define FLT_IS_IEC_60559 __FLT_IS_IEC_60559__ |
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#define DBL_IS_IEC_60559 __DBL_IS_IEC_60559__ |
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#define LDBL_IS_IEC_60559 __LDBL_IS_IEC_60559__ |
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|
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/* Infinity in type float, or overflow if infinity not supported. */ |
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#undef INFINITY |
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#define INFINITY (__builtin_inff ()) |
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|
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/* Quiet NaN, if supported for float. */ |
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#if __FLT_HAS_QUIET_NAN__ |
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#undef NAN |
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#define NAN (__builtin_nanf ("")) |
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#endif |
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|
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/* Signaling NaN, if supported for each type. All formats supported |
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by GCC support either both quiet and signaling NaNs, or neither |
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kind of NaN. */ |
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#if __FLT_HAS_QUIET_NAN__ |
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#undef FLT_SNAN |
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#define FLT_SNAN (__builtin_nansf ("")) |
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#endif |
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#if __DBL_HAS_QUIET_NAN__ |
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#undef DBL_SNAN |
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#define DBL_SNAN (__builtin_nans ("")) |
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#endif |
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#if __LDBL_HAS_QUIET_NAN__ |
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#undef LDBL_SNAN |
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#define LDBL_SNAN (__builtin_nansl ("")) |
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#endif |
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|
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#endif /* C2X */ |
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|
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#if (defined __STDC_WANT_IEC_60559_BFP_EXT__ \ |
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|| defined __STDC_WANT_IEC_60559_EXT__) |
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/* Number of decimal digits for which conversions between decimal |
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character strings and binary formats, in both directions, are |
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correctly rounded. */ |
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#define CR_DECIMAL_DIG __UINTMAX_MAX__ |
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#endif |
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|
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#ifdef __STDC_WANT_IEC_60559_TYPES_EXT__ |
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/* Constants for _FloatN and _FloatNx types from TS 18661-3. See |
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comments above for their semantics. */ |
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|
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#ifdef __FLT16_MANT_DIG__ |
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#undef FLT16_MANT_DIG |
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#define FLT16_MANT_DIG __FLT16_MANT_DIG__ |
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#undef FLT16_DIG |
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#define FLT16_DIG __FLT16_DIG__ |
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#undef FLT16_MIN_EXP |
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#define FLT16_MIN_EXP __FLT16_MIN_EXP__ |
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#undef FLT16_MIN_10_EXP |
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#define FLT16_MIN_10_EXP __FLT16_MIN_10_EXP__ |
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#undef FLT16_MAX_EXP |
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#define FLT16_MAX_EXP __FLT16_MAX_EXP__ |
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#undef FLT16_MAX_10_EXP |
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#define FLT16_MAX_10_EXP __FLT16_MAX_10_EXP__ |
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#undef FLT16_MAX |
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#define FLT16_MAX __FLT16_MAX__ |
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#undef FLT16_EPSILON |
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#define FLT16_EPSILON __FLT16_EPSILON__ |
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#undef FLT16_MIN |
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#define FLT16_MIN __FLT16_MIN__ |
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#undef FLT16_DECIMAL_DIG |
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#define FLT16_DECIMAL_DIG __FLT16_DECIMAL_DIG__ |
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#undef FLT16_TRUE_MIN |
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#define FLT16_TRUE_MIN __FLT16_DENORM_MIN__ |
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#if defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L |
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#undef FLT16_SNAN |
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#define FLT16_SNAN (__builtin_nansf16 ("")) |
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#endif /* C2X */ |
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#endif /* __FLT16_MANT_DIG__. */ |
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|
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#ifdef __FLT32_MANT_DIG__ |
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#undef FLT32_MANT_DIG |
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#define FLT32_MANT_DIG __FLT32_MANT_DIG__ |
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#undef FLT32_DIG |
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#define FLT32_DIG __FLT32_DIG__ |
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#undef FLT32_MIN_EXP |
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#define FLT32_MIN_EXP __FLT32_MIN_EXP__ |
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#undef FLT32_MIN_10_EXP |
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#define FLT32_MIN_10_EXP __FLT32_MIN_10_EXP__ |
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#undef FLT32_MAX_EXP |
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#define FLT32_MAX_EXP __FLT32_MAX_EXP__ |
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#undef FLT32_MAX_10_EXP |
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#define FLT32_MAX_10_EXP __FLT32_MAX_10_EXP__ |
| 342 |
#undef FLT32_MAX |
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#define FLT32_MAX __FLT32_MAX__ |
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#undef FLT32_EPSILON |
| 345 |
#define FLT32_EPSILON __FLT32_EPSILON__ |
| 346 |
#undef FLT32_MIN |
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#define FLT32_MIN __FLT32_MIN__ |
| 348 |
#undef FLT32_DECIMAL_DIG |
| 349 |
#define FLT32_DECIMAL_DIG __FLT32_DECIMAL_DIG__ |
| 350 |
#undef FLT32_TRUE_MIN |
| 351 |
#define FLT32_TRUE_MIN __FLT32_DENORM_MIN__ |
| 352 |
#if defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L |
| 353 |
#undef FLT32_SNAN |
| 354 |
#define FLT32_SNAN (__builtin_nansf32 ("")) |
| 355 |
#endif /* C2X */ |
| 356 |
#endif /* __FLT32_MANT_DIG__. */ |
| 357 |
|
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#ifdef __FLT64_MANT_DIG__ |
| 359 |
#undef FLT64_MANT_DIG |
| 360 |
#define FLT64_MANT_DIG __FLT64_MANT_DIG__ |
| 361 |
#undef FLT64_DIG |
| 362 |
#define FLT64_DIG __FLT64_DIG__ |
| 363 |
#undef FLT64_MIN_EXP |
| 364 |
#define FLT64_MIN_EXP __FLT64_MIN_EXP__ |
| 365 |
#undef FLT64_MIN_10_EXP |
| 366 |
#define FLT64_MIN_10_EXP __FLT64_MIN_10_EXP__ |
| 367 |
#undef FLT64_MAX_EXP |
| 368 |
#define FLT64_MAX_EXP __FLT64_MAX_EXP__ |
| 369 |
#undef FLT64_MAX_10_EXP |
| 370 |
#define FLT64_MAX_10_EXP __FLT64_MAX_10_EXP__ |
| 371 |
#undef FLT64_MAX |
| 372 |
#define FLT64_MAX __FLT64_MAX__ |
| 373 |
#undef FLT64_EPSILON |
| 374 |
#define FLT64_EPSILON __FLT64_EPSILON__ |
| 375 |
#undef FLT64_MIN |
| 376 |
#define FLT64_MIN __FLT64_MIN__ |
| 377 |
#undef FLT64_DECIMAL_DIG |
| 378 |
#define FLT64_DECIMAL_DIG __FLT64_DECIMAL_DIG__ |
| 379 |
#undef FLT64_TRUE_MIN |
| 380 |
#define FLT64_TRUE_MIN __FLT64_DENORM_MIN__ |
| 381 |
#if defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L |
| 382 |
#undef FLT64_SNAN |
| 383 |
#define FLT64_SNAN (__builtin_nansf64 ("")) |
| 384 |
#endif /* C2X */ |
| 385 |
#endif /* __FLT64_MANT_DIG__. */ |
| 386 |
|
| 387 |
#ifdef __FLT128_MANT_DIG__ |
| 388 |
#undef FLT128_MANT_DIG |
| 389 |
#define FLT128_MANT_DIG __FLT128_MANT_DIG__ |
| 390 |
#undef FLT128_DIG |
| 391 |
#define FLT128_DIG __FLT128_DIG__ |
| 392 |
#undef FLT128_MIN_EXP |
| 393 |
#define FLT128_MIN_EXP __FLT128_MIN_EXP__ |
| 394 |
#undef FLT128_MIN_10_EXP |
| 395 |
#define FLT128_MIN_10_EXP __FLT128_MIN_10_EXP__ |
| 396 |
#undef FLT128_MAX_EXP |
| 397 |
#define FLT128_MAX_EXP __FLT128_MAX_EXP__ |
| 398 |
#undef FLT128_MAX_10_EXP |
| 399 |
#define FLT128_MAX_10_EXP __FLT128_MAX_10_EXP__ |
| 400 |
#undef FLT128_MAX |
| 401 |
#define FLT128_MAX __FLT128_MAX__ |
| 402 |
#undef FLT128_EPSILON |
| 403 |
#define FLT128_EPSILON __FLT128_EPSILON__ |
| 404 |
#undef FLT128_MIN |
| 405 |
#define FLT128_MIN __FLT128_MIN__ |
| 406 |
#undef FLT128_DECIMAL_DIG |
| 407 |
#define FLT128_DECIMAL_DIG __FLT128_DECIMAL_DIG__ |
| 408 |
#undef FLT128_TRUE_MIN |
| 409 |
#define FLT128_TRUE_MIN __FLT128_DENORM_MIN__ |
| 410 |
#if defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L |
| 411 |
#undef FLT128_SNAN |
| 412 |
#define FLT128_SNAN (__builtin_nansf128 ("")) |
| 413 |
#endif /* C2X */ |
| 414 |
#endif /* __FLT128_MANT_DIG__. */ |
| 415 |
|
| 416 |
#ifdef __FLT32X_MANT_DIG__ |
| 417 |
#undef FLT32X_MANT_DIG |
| 418 |
#define FLT32X_MANT_DIG __FLT32X_MANT_DIG__ |
| 419 |
#undef FLT32X_DIG |
| 420 |
#define FLT32X_DIG __FLT32X_DIG__ |
| 421 |
#undef FLT32X_MIN_EXP |
| 422 |
#define FLT32X_MIN_EXP __FLT32X_MIN_EXP__ |
| 423 |
#undef FLT32X_MIN_10_EXP |
| 424 |
#define FLT32X_MIN_10_EXP __FLT32X_MIN_10_EXP__ |
| 425 |
#undef FLT32X_MAX_EXP |
| 426 |
#define FLT32X_MAX_EXP __FLT32X_MAX_EXP__ |
| 427 |
#undef FLT32X_MAX_10_EXP |
| 428 |
#define FLT32X_MAX_10_EXP __FLT32X_MAX_10_EXP__ |
| 429 |
#undef FLT32X_MAX |
| 430 |
#define FLT32X_MAX __FLT32X_MAX__ |
| 431 |
#undef FLT32X_EPSILON |
| 432 |
#define FLT32X_EPSILON __FLT32X_EPSILON__ |
| 433 |
#undef FLT32X_MIN |
| 434 |
#define FLT32X_MIN __FLT32X_MIN__ |
| 435 |
#undef FLT32X_DECIMAL_DIG |
| 436 |
#define FLT32X_DECIMAL_DIG __FLT32X_DECIMAL_DIG__ |
| 437 |
#undef FLT32X_TRUE_MIN |
| 438 |
#define FLT32X_TRUE_MIN __FLT32X_DENORM_MIN__ |
| 439 |
#if defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L |
| 440 |
#undef FLT32X_SNAN |
| 441 |
#define FLT32X_SNAN (__builtin_nansf32x ("")) |
| 442 |
#endif /* C2X */ |
| 443 |
#endif /* __FLT32X_MANT_DIG__. */ |
| 444 |
|
| 445 |
#ifdef __FLT64X_MANT_DIG__ |
| 446 |
#undef FLT64X_MANT_DIG |
| 447 |
#define FLT64X_MANT_DIG __FLT64X_MANT_DIG__ |
| 448 |
#undef FLT64X_DIG |
| 449 |
#define FLT64X_DIG __FLT64X_DIG__ |
| 450 |
#undef FLT64X_MIN_EXP |
| 451 |
#define FLT64X_MIN_EXP __FLT64X_MIN_EXP__ |
| 452 |
#undef FLT64X_MIN_10_EXP |
| 453 |
#define FLT64X_MIN_10_EXP __FLT64X_MIN_10_EXP__ |
| 454 |
#undef FLT64X_MAX_EXP |
| 455 |
#define FLT64X_MAX_EXP __FLT64X_MAX_EXP__ |
| 456 |
#undef FLT64X_MAX_10_EXP |
| 457 |
#define FLT64X_MAX_10_EXP __FLT64X_MAX_10_EXP__ |
| 458 |
#undef FLT64X_MAX |
| 459 |
#define FLT64X_MAX __FLT64X_MAX__ |
| 460 |
#undef FLT64X_EPSILON |
| 461 |
#define FLT64X_EPSILON __FLT64X_EPSILON__ |
| 462 |
#undef FLT64X_MIN |
| 463 |
#define FLT64X_MIN __FLT64X_MIN__ |
| 464 |
#undef FLT64X_DECIMAL_DIG |
| 465 |
#define FLT64X_DECIMAL_DIG __FLT64X_DECIMAL_DIG__ |
| 466 |
#undef FLT64X_TRUE_MIN |
| 467 |
#define FLT64X_TRUE_MIN __FLT64X_DENORM_MIN__ |
| 468 |
#if defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L |
| 469 |
#undef FLT64X_SNAN |
| 470 |
#define FLT64X_SNAN (__builtin_nansf64x ("")) |
| 471 |
#endif /* C2X */ |
| 472 |
#endif /* __FLT64X_MANT_DIG__. */ |
| 473 |
|
| 474 |
#ifdef __FLT128X_MANT_DIG__ |
| 475 |
#undef FLT128X_MANT_DIG |
| 476 |
#define FLT128X_MANT_DIG __FLT128X_MANT_DIG__ |
| 477 |
#undef FLT128X_DIG |
| 478 |
#define FLT128X_DIG __FLT128X_DIG__ |
| 479 |
#undef FLT128X_MIN_EXP |
| 480 |
#define FLT128X_MIN_EXP __FLT128X_MIN_EXP__ |
| 481 |
#undef FLT128X_MIN_10_EXP |
| 482 |
#define FLT128X_MIN_10_EXP __FLT128X_MIN_10_EXP__ |
| 483 |
#undef FLT128X_MAX_EXP |
| 484 |
#define FLT128X_MAX_EXP __FLT128X_MAX_EXP__ |
| 485 |
#undef FLT128X_MAX_10_EXP |
| 486 |
#define FLT128X_MAX_10_EXP __FLT128X_MAX_10_EXP__ |
| 487 |
#undef FLT128X_MAX |
| 488 |
#define FLT128X_MAX __FLT128X_MAX__ |
| 489 |
#undef FLT128X_EPSILON |
| 490 |
#define FLT128X_EPSILON __FLT128X_EPSILON__ |
| 491 |
#undef FLT128X_MIN |
| 492 |
#define FLT128X_MIN __FLT128X_MIN__ |
| 493 |
#undef FLT128X_DECIMAL_DIG |
| 494 |
#define FLT128X_DECIMAL_DIG __FLT128X_DECIMAL_DIG__ |
| 495 |
#undef FLT128X_TRUE_MIN |
| 496 |
#define FLT128X_TRUE_MIN __FLT128X_DENORM_MIN__ |
| 497 |
#if defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L |
| 498 |
#undef FLT128X_SNAN |
| 499 |
#define FLT128X_SNAN (__builtin_nansf128x ("")) |
| 500 |
#endif /* C2X */ |
| 501 |
#endif /* __FLT128X_MANT_DIG__. */ |
| 502 |
|
| 503 |
#endif /* __STDC_WANT_IEC_60559_TYPES_EXT__. */ |
| 504 |
|
| 505 |
#ifdef __DEC32_MANT_DIG__ |
| 506 |
#if (defined __STDC_WANT_DEC_FP__ \ |
| 507 |
|| defined __STDC_WANT_IEC_60559_DFP_EXT__ \ |
| 508 |
|| (defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L)) |
| 509 |
/* C2X; formerly Technical Report 24732, extension for decimal |
| 510 |
floating-point arithmetic: Characteristic of decimal floating types |
| 511 |
<float.h>, and TS 18661-2. */ |
| 512 |
|
| 513 |
/* Number of base-FLT_RADIX digits in the significand, p. */ |
| 514 |
#undef DEC32_MANT_DIG |
| 515 |
#undef DEC64_MANT_DIG |
| 516 |
#undef DEC128_MANT_DIG |
| 517 |
#define DEC32_MANT_DIG __DEC32_MANT_DIG__ |
| 518 |
#define DEC64_MANT_DIG __DEC64_MANT_DIG__ |
| 519 |
#define DEC128_MANT_DIG __DEC128_MANT_DIG__ |
| 520 |
|
| 521 |
/* Minimum exponent. */ |
| 522 |
#undef DEC32_MIN_EXP |
| 523 |
#undef DEC64_MIN_EXP |
| 524 |
#undef DEC128_MIN_EXP |
| 525 |
#define DEC32_MIN_EXP __DEC32_MIN_EXP__ |
| 526 |
#define DEC64_MIN_EXP __DEC64_MIN_EXP__ |
| 527 |
#define DEC128_MIN_EXP __DEC128_MIN_EXP__ |
| 528 |
|
| 529 |
/* Maximum exponent. */ |
| 530 |
#undef DEC32_MAX_EXP |
| 531 |
#undef DEC64_MAX_EXP |
| 532 |
#undef DEC128_MAX_EXP |
| 533 |
#define DEC32_MAX_EXP __DEC32_MAX_EXP__ |
| 534 |
#define DEC64_MAX_EXP __DEC64_MAX_EXP__ |
| 535 |
#define DEC128_MAX_EXP __DEC128_MAX_EXP__ |
| 536 |
|
| 537 |
/* Maximum representable finite decimal floating-point number |
| 538 |
(there are 6, 15, and 33 9s after the decimal points respectively). */ |
| 539 |
#undef DEC32_MAX |
| 540 |
#undef DEC64_MAX |
| 541 |
#undef DEC128_MAX |
| 542 |
#define DEC32_MAX __DEC32_MAX__ |
| 543 |
#define DEC64_MAX __DEC64_MAX__ |
| 544 |
#define DEC128_MAX __DEC128_MAX__ |
| 545 |
|
| 546 |
/* The difference between 1 and the least value greater than 1 that is |
| 547 |
representable in the given floating point type. */ |
| 548 |
#undef DEC32_EPSILON |
| 549 |
#undef DEC64_EPSILON |
| 550 |
#undef DEC128_EPSILON |
| 551 |
#define DEC32_EPSILON __DEC32_EPSILON__ |
| 552 |
#define DEC64_EPSILON __DEC64_EPSILON__ |
| 553 |
#define DEC128_EPSILON __DEC128_EPSILON__ |
| 554 |
|
| 555 |
/* Minimum normalized positive floating-point number. */ |
| 556 |
#undef DEC32_MIN |
| 557 |
#undef DEC64_MIN |
| 558 |
#undef DEC128_MIN |
| 559 |
#define DEC32_MIN __DEC32_MIN__ |
| 560 |
#define DEC64_MIN __DEC64_MIN__ |
| 561 |
#define DEC128_MIN __DEC128_MIN__ |
| 562 |
|
| 563 |
/* The floating-point expression evaluation method. |
| 564 |
-1 indeterminate |
| 565 |
0 evaluate all operations and constants just to the range and |
| 566 |
precision of the type |
| 567 |
1 evaluate operations and constants of type _Decimal32 |
| 568 |
and _Decimal64 to the range and precision of the _Decimal64 |
| 569 |
type, evaluate _Decimal128 operations and constants to the |
| 570 |
range and precision of the _Decimal128 type; |
| 571 |
2 evaluate all operations and constants to the range and |
| 572 |
precision of the _Decimal128 type. */ |
| 573 |
|
| 574 |
#undef DEC_EVAL_METHOD |
| 575 |
#define DEC_EVAL_METHOD __DEC_EVAL_METHOD__ |
| 576 |
|
| 577 |
#endif /* __STDC_WANT_DEC_FP__ || __STDC_WANT_IEC_60559_DFP_EXT__ || C2X. */ |
| 578 |
|
| 579 |
#ifdef __STDC_WANT_DEC_FP__ |
| 580 |
|
| 581 |
/* Minimum subnormal positive floating-point number. */ |
| 582 |
#undef DEC32_SUBNORMAL_MIN |
| 583 |
#undef DEC64_SUBNORMAL_MIN |
| 584 |
#undef DEC128_SUBNORMAL_MIN |
| 585 |
#define DEC32_SUBNORMAL_MIN __DEC32_SUBNORMAL_MIN__ |
| 586 |
#define DEC64_SUBNORMAL_MIN __DEC64_SUBNORMAL_MIN__ |
| 587 |
#define DEC128_SUBNORMAL_MIN __DEC128_SUBNORMAL_MIN__ |
| 588 |
|
| 589 |
#endif /* __STDC_WANT_DEC_FP__. */ |
| 590 |
|
| 591 |
#if (defined __STDC_WANT_IEC_60559_DFP_EXT__ \ |
| 592 |
|| (defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L)) |
| 593 |
|
| 594 |
/* Minimum subnormal positive floating-point number. */ |
| 595 |
#undef DEC32_TRUE_MIN |
| 596 |
#undef DEC64_TRUE_MIN |
| 597 |
#undef DEC128_TRUE_MIN |
| 598 |
#define DEC32_TRUE_MIN __DEC32_SUBNORMAL_MIN__ |
| 599 |
#define DEC64_TRUE_MIN __DEC64_SUBNORMAL_MIN__ |
| 600 |
#define DEC128_TRUE_MIN __DEC128_SUBNORMAL_MIN__ |
| 601 |
|
| 602 |
#endif /* __STDC_WANT_IEC_60559_DFP_EXT__ || C2X. */ |
| 603 |
|
| 604 |
#if defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L |
| 605 |
|
| 606 |
/* Infinity in type _Decimal32. */ |
| 607 |
#undef DEC_INFINITY |
| 608 |
#define DEC_INFINITY (__builtin_infd32 ()) |
| 609 |
|
| 610 |
/* Quiet NaN in type _Decimal32. */ |
| 611 |
#undef DEC_NAN |
| 612 |
#define DEC_NAN (__builtin_nand32 ("")) |
| 613 |
|
| 614 |
/* Signaling NaN in each decimal floating-point type. */ |
| 615 |
#undef DEC32_SNAN |
| 616 |
#define DEC32_SNAN (__builtin_nansd32 ("")) |
| 617 |
#undef DEC64_SNAN |
| 618 |
#define DEC64_SNAN (__builtin_nansd64 ("")) |
| 619 |
#undef DEC128_SNAN |
| 620 |
#define DEC128_SNAN (__builtin_nansd128 ("")) |
| 621 |
|
| 622 |
#endif /* C2X */ |
| 623 |
|
| 624 |
#endif /* __DEC32_MANT_DIG__ */ |
| 625 |
|
| 626 |
#endif /* _FLOAT_H___ */ |
| 627 |
#include_next <float.h> |
