| /* Copyright (C) 2002-2021 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 3, 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. |
| |
| Under Section 7 of GPL version 3, you are granted additional |
| permissions described in the GCC Runtime Library Exception, version |
| 3.1, as published by the Free Software Foundation. |
| |
| You should have received a copy of the GNU General Public License and |
| a copy of the GCC Runtime Library Exception along with this program; |
| see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| /* |
| * 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. */ |
| /* ??? This is supposed to change with calls to fesetround in <fenv.h>. */ |
| #undef FLT_ROUNDS |
| #define FLT_ROUNDS 1 |
| |
| #if (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) \ |
| || (defined (__cplusplus) && __cplusplus >= 201103L) |
| /* The floating-point expression evaluation method. The precise |
| definitions of these values are generalised to include support for |
| the interchange and extended types defined in ISO/IEC TS 18661-3. |
| Prior to this (for C99/C11) the definitions were: |
| |
| -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 |
| |
| The TS 18661-3 definitions are: |
| |
| -1 indeterminate |
| 0 evaluate all operations and constants, whose semantic type has |
| at most the range and precision of float, to the range and |
| precision of float; evaluate all other operations and constants |
| to the range and precision of the semantic type. |
| 1 evaluate all operations and constants, whose semantic type has |
| at most the range and precision of double, to the range and |
| precision of double; evaluate all other operations and constants |
| to the range and precision of the semantic type. |
| 2 evaluate all operations and constants, whose semantic type has |
| at most the range and precision of long double, to the range and |
| precision of long double; evaluate all other operations and |
| constants to the range and precision of the semantic type. |
| N where _FloatN is a supported interchange floating type |
| evaluate all operations and constants, whose semantic type has |
| at most the range and precision of the _FloatN type, to the |
| range and precision of the _FloatN type; evaluate all other |
| operations and constants to the range and precision of the |
| semantic type. |
| N + 1, where _FloatNx is a supported extended floating type |
| evaluate operations and constants, whose semantic type has at |
| most the range and precision of the _FloatNx type, to the range |
| and precision of the _FloatNx type; evaluate all other |
| operations and constants to the range and precision of the |
| semantic type. |
| |
| The compiler predefines two macros: |
| |
| __FLT_EVAL_METHOD__ |
| Which, depending on the value given for |
| -fpermitted-flt-eval-methods, may be limited to only those values |
| for FLT_EVAL_METHOD defined in C99/C11. |
| |
| __FLT_EVAL_METHOD_TS_18661_3__ |
| Which always permits the values for FLT_EVAL_METHOD defined in |
| ISO/IEC TS 18661-3. |
| |
| Here we want to use __FLT_EVAL_METHOD__, unless |
| __STDC_WANT_IEC_60559_TYPES_EXT__ is defined, in which case the user |
| is specifically asking for the ISO/IEC TS 18661-3 types, so we use |
| __FLT_EVAL_METHOD_TS_18661_3__. |
| |
| ??? 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 |
| #ifdef __STDC_WANT_IEC_60559_TYPES_EXT__ |
| #define FLT_EVAL_METHOD __FLT_EVAL_METHOD_TS_18661_3__ |
| #else |
| #define FLT_EVAL_METHOD __FLT_EVAL_METHOD__ |
| #endif |
| |
| /* 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 */ |
| |
| #if (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) \ |
| || (defined (__cplusplus) && __cplusplus >= 201703L) |
| /* Versions of DECIMAL_DIG for each floating-point type. */ |
| #undef FLT_DECIMAL_DIG |
| #undef DBL_DECIMAL_DIG |
| #undef LDBL_DECIMAL_DIG |
| #define FLT_DECIMAL_DIG __FLT_DECIMAL_DIG__ |
| #define DBL_DECIMAL_DIG __DBL_DECIMAL_DIG__ |
| #define LDBL_DECIMAL_DIG __LDBL_DECIMAL_DIG__ |
| |
| /* Whether types support subnormal numbers. */ |
| #undef FLT_HAS_SUBNORM |
| #undef DBL_HAS_SUBNORM |
| #undef LDBL_HAS_SUBNORM |
| #define FLT_HAS_SUBNORM __FLT_HAS_DENORM__ |
| #define DBL_HAS_SUBNORM __DBL_HAS_DENORM__ |
| #define LDBL_HAS_SUBNORM __LDBL_HAS_DENORM__ |
| |
| /* Minimum positive values, including subnormals. */ |
| #undef FLT_TRUE_MIN |
| #undef DBL_TRUE_MIN |
| #undef LDBL_TRUE_MIN |
| #define FLT_TRUE_MIN __FLT_DENORM_MIN__ |
| #define DBL_TRUE_MIN __DBL_DENORM_MIN__ |
| #define LDBL_TRUE_MIN __LDBL_DENORM_MIN__ |
| |
| #endif /* C11 */ |
| |
| #if defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L |
| /* Maximum finite positive value with MANT_DIG digits in the |
| significand taking their maximum value. */ |
| #undef FLT_NORM_MAX |
| #undef DBL_NORM_MAX |
| #undef LDBL_NORM_MAX |
| #define FLT_NORM_MAX __FLT_NORM_MAX__ |
| #define DBL_NORM_MAX __DBL_NORM_MAX__ |
| #define LDBL_NORM_MAX __LDBL_NORM_MAX__ |
| |
| /* Whether each type matches an IEC 60559 format (1 for format, 2 for |
| format and operations). */ |
| #undef FLT_IS_IEC_60559 |
| #undef DBL_IS_IEC_60559 |
| #undef LDBL_IS_IEC_60559 |
| #define FLT_IS_IEC_60559 __FLT_IS_IEC_60559__ |
| #define DBL_IS_IEC_60559 __DBL_IS_IEC_60559__ |
| #define LDBL_IS_IEC_60559 __LDBL_IS_IEC_60559__ |
| |
| /* Infinity in type float, or overflow if infinity not supported. */ |
| #undef INFINITY |
| #define INFINITY (__builtin_inff ()) |
| |
| /* Quiet NaN, if supported for float. */ |
| #if __FLT_HAS_QUIET_NAN__ |
| #undef NAN |
| #define NAN (__builtin_nanf ("")) |
| #endif |
| |
| /* Signaling NaN, if supported for each type. All formats supported |
| by GCC support either both quiet and signaling NaNs, or neither |
| kind of NaN. */ |
| #if __FLT_HAS_QUIET_NAN__ |
| #undef FLT_SNAN |
| #define FLT_SNAN (__builtin_nansf ("")) |
| #endif |
| #if __DBL_HAS_QUIET_NAN__ |
| #undef DBL_SNAN |
| #define DBL_SNAN (__builtin_nans ("")) |
| #endif |
| #if __LDBL_HAS_QUIET_NAN__ |
| #undef LDBL_SNAN |
| #define LDBL_SNAN (__builtin_nansl ("")) |
| #endif |
| |
| #endif /* C2X */ |
| |
| #if (defined __STDC_WANT_IEC_60559_BFP_EXT__ \ |
| || defined __STDC_WANT_IEC_60559_EXT__) |
| /* Number of decimal digits for which conversions between decimal |
| character strings and binary formats, in both directions, are |
| correctly rounded. */ |
| #define CR_DECIMAL_DIG __UINTMAX_MAX__ |
| #endif |
| |
| #ifdef __STDC_WANT_IEC_60559_TYPES_EXT__ |
| /* Constants for _FloatN and _FloatNx types from TS 18661-3. See |
| comments above for their semantics. */ |
| |
| #ifdef __FLT16_MANT_DIG__ |
| #undef FLT16_MANT_DIG |
| #define FLT16_MANT_DIG __FLT16_MANT_DIG__ |
| #undef FLT16_DIG |
| #define FLT16_DIG __FLT16_DIG__ |
| #undef FLT16_MIN_EXP |
| #define FLT16_MIN_EXP __FLT16_MIN_EXP__ |
| #undef FLT16_MIN_10_EXP |
| #define FLT16_MIN_10_EXP __FLT16_MIN_10_EXP__ |
| #undef FLT16_MAX_EXP |
| #define FLT16_MAX_EXP __FLT16_MAX_EXP__ |
| #undef FLT16_MAX_10_EXP |
| #define FLT16_MAX_10_EXP __FLT16_MAX_10_EXP__ |
| #undef FLT16_MAX |
| #define FLT16_MAX __FLT16_MAX__ |
| #undef FLT16_EPSILON |
| #define FLT16_EPSILON __FLT16_EPSILON__ |
| #undef FLT16_MIN |
| #define FLT16_MIN __FLT16_MIN__ |
| #undef FLT16_DECIMAL_DIG |
| #define FLT16_DECIMAL_DIG __FLT16_DECIMAL_DIG__ |
| #undef FLT16_TRUE_MIN |
| #define FLT16_TRUE_MIN __FLT16_DENORM_MIN__ |
| #if defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L |
| #undef FLT16_SNAN |
| #define FLT16_SNAN (__builtin_nansf16 ("")) |
| #endif /* C2X */ |
| #endif /* __FLT16_MANT_DIG__. */ |
| |
| #ifdef __FLT32_MANT_DIG__ |
| #undef FLT32_MANT_DIG |
| #define FLT32_MANT_DIG __FLT32_MANT_DIG__ |
| #undef FLT32_DIG |
| #define FLT32_DIG __FLT32_DIG__ |
| #undef FLT32_MIN_EXP |
| #define FLT32_MIN_EXP __FLT32_MIN_EXP__ |
| #undef FLT32_MIN_10_EXP |
| #define FLT32_MIN_10_EXP __FLT32_MIN_10_EXP__ |
| #undef FLT32_MAX_EXP |
| #define FLT32_MAX_EXP __FLT32_MAX_EXP__ |
| #undef FLT32_MAX_10_EXP |
| #define FLT32_MAX_10_EXP __FLT32_MAX_10_EXP__ |
| #undef FLT32_MAX |
| #define FLT32_MAX __FLT32_MAX__ |
| #undef FLT32_EPSILON |
| #define FLT32_EPSILON __FLT32_EPSILON__ |
| #undef FLT32_MIN |
| #define FLT32_MIN __FLT32_MIN__ |
| #undef FLT32_DECIMAL_DIG |
| #define FLT32_DECIMAL_DIG __FLT32_DECIMAL_DIG__ |
| #undef FLT32_TRUE_MIN |
| #define FLT32_TRUE_MIN __FLT32_DENORM_MIN__ |
| #if defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L |
| #undef FLT32_SNAN |
| #define FLT32_SNAN (__builtin_nansf32 ("")) |
| #endif /* C2X */ |
| #endif /* __FLT32_MANT_DIG__. */ |
| |
| #ifdef __FLT64_MANT_DIG__ |
| #undef FLT64_MANT_DIG |
| #define FLT64_MANT_DIG __FLT64_MANT_DIG__ |
| #undef FLT64_DIG |
| #define FLT64_DIG __FLT64_DIG__ |
| #undef FLT64_MIN_EXP |
| #define FLT64_MIN_EXP __FLT64_MIN_EXP__ |
| #undef FLT64_MIN_10_EXP |
| #define FLT64_MIN_10_EXP __FLT64_MIN_10_EXP__ |
| #undef FLT64_MAX_EXP |
| #define FLT64_MAX_EXP __FLT64_MAX_EXP__ |
| #undef FLT64_MAX_10_EXP |
| #define FLT64_MAX_10_EXP __FLT64_MAX_10_EXP__ |
| #undef FLT64_MAX |
| #define FLT64_MAX __FLT64_MAX__ |
| #undef FLT64_EPSILON |
| #define FLT64_EPSILON __FLT64_EPSILON__ |
| #undef FLT64_MIN |
| #define FLT64_MIN __FLT64_MIN__ |
| #undef FLT64_DECIMAL_DIG |
| #define FLT64_DECIMAL_DIG __FLT64_DECIMAL_DIG__ |
| #undef FLT64_TRUE_MIN |
| #define FLT64_TRUE_MIN __FLT64_DENORM_MIN__ |
| #if defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L |
| #undef FLT64_SNAN |
| #define FLT64_SNAN (__builtin_nansf64 ("")) |
| #endif /* C2X */ |
| #endif /* __FLT64_MANT_DIG__. */ |
| |
| #ifdef __FLT128_MANT_DIG__ |
| #undef FLT128_MANT_DIG |
| #define FLT128_MANT_DIG __FLT128_MANT_DIG__ |
| #undef FLT128_DIG |
| #define FLT128_DIG __FLT128_DIG__ |
| #undef FLT128_MIN_EXP |
| #define FLT128_MIN_EXP __FLT128_MIN_EXP__ |
| #undef FLT128_MIN_10_EXP |
| #define FLT128_MIN_10_EXP __FLT128_MIN_10_EXP__ |
| #undef FLT128_MAX_EXP |
| #define FLT128_MAX_EXP __FLT128_MAX_EXP__ |
| #undef FLT128_MAX_10_EXP |
| #define FLT128_MAX_10_EXP __FLT128_MAX_10_EXP__ |
| #undef FLT128_MAX |
| #define FLT128_MAX __FLT128_MAX__ |
| #undef FLT128_EPSILON |
| #define FLT128_EPSILON __FLT128_EPSILON__ |
| #undef FLT128_MIN |
| #define FLT128_MIN __FLT128_MIN__ |
| #undef FLT128_DECIMAL_DIG |
| #define FLT128_DECIMAL_DIG __FLT128_DECIMAL_DIG__ |
| #undef FLT128_TRUE_MIN |
| #define FLT128_TRUE_MIN __FLT128_DENORM_MIN__ |
| #if defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L |
| #undef FLT128_SNAN |
| #define FLT128_SNAN (__builtin_nansf128 ("")) |
| #endif /* C2X */ |
| #endif /* __FLT128_MANT_DIG__. */ |
| |
| #ifdef __FLT32X_MANT_DIG__ |
| #undef FLT32X_MANT_DIG |
| #define FLT32X_MANT_DIG __FLT32X_MANT_DIG__ |
| #undef FLT32X_DIG |
| #define FLT32X_DIG __FLT32X_DIG__ |
| #undef FLT32X_MIN_EXP |
| #define FLT32X_MIN_EXP __FLT32X_MIN_EXP__ |
| #undef FLT32X_MIN_10_EXP |
| #define FLT32X_MIN_10_EXP __FLT32X_MIN_10_EXP__ |
| #undef FLT32X_MAX_EXP |
| #define FLT32X_MAX_EXP __FLT32X_MAX_EXP__ |
| #undef FLT32X_MAX_10_EXP |
| #define FLT32X_MAX_10_EXP __FLT32X_MAX_10_EXP__ |
| #undef FLT32X_MAX |
| #define FLT32X_MAX __FLT32X_MAX__ |
| #undef FLT32X_EPSILON |
| #define FLT32X_EPSILON __FLT32X_EPSILON__ |
| #undef FLT32X_MIN |
| #define FLT32X_MIN __FLT32X_MIN__ |
| #undef FLT32X_DECIMAL_DIG |
| #define FLT32X_DECIMAL_DIG __FLT32X_DECIMAL_DIG__ |
| #undef FLT32X_TRUE_MIN |
| #define FLT32X_TRUE_MIN __FLT32X_DENORM_MIN__ |
| #if defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L |
| #undef FLT32X_SNAN |
| #define FLT32X_SNAN (__builtin_nansf32x ("")) |
| #endif /* C2X */ |
| #endif /* __FLT32X_MANT_DIG__. */ |
| |
| #ifdef __FLT64X_MANT_DIG__ |
| #undef FLT64X_MANT_DIG |
| #define FLT64X_MANT_DIG __FLT64X_MANT_DIG__ |
| #undef FLT64X_DIG |
| #define FLT64X_DIG __FLT64X_DIG__ |
| #undef FLT64X_MIN_EXP |
| #define FLT64X_MIN_EXP __FLT64X_MIN_EXP__ |
| #undef FLT64X_MIN_10_EXP |
| #define FLT64X_MIN_10_EXP __FLT64X_MIN_10_EXP__ |
| #undef FLT64X_MAX_EXP |
| #define FLT64X_MAX_EXP __FLT64X_MAX_EXP__ |
| #undef FLT64X_MAX_10_EXP |
| #define FLT64X_MAX_10_EXP __FLT64X_MAX_10_EXP__ |
| #undef FLT64X_MAX |
| #define FLT64X_MAX __FLT64X_MAX__ |
| #undef FLT64X_EPSILON |
| #define FLT64X_EPSILON __FLT64X_EPSILON__ |
| #undef FLT64X_MIN |
| #define FLT64X_MIN __FLT64X_MIN__ |
| #undef FLT64X_DECIMAL_DIG |
| #define FLT64X_DECIMAL_DIG __FLT64X_DECIMAL_DIG__ |
| #undef FLT64X_TRUE_MIN |
| #define FLT64X_TRUE_MIN __FLT64X_DENORM_MIN__ |
| #if defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L |
| #undef FLT64X_SNAN |
| #define FLT64X_SNAN (__builtin_nansf64x ("")) |
| #endif /* C2X */ |
| #endif /* __FLT64X_MANT_DIG__. */ |
| |
| #ifdef __FLT128X_MANT_DIG__ |
| #undef FLT128X_MANT_DIG |
| #define FLT128X_MANT_DIG __FLT128X_MANT_DIG__ |
| #undef FLT128X_DIG |
| #define FLT128X_DIG __FLT128X_DIG__ |
| #undef FLT128X_MIN_EXP |
| #define FLT128X_MIN_EXP __FLT128X_MIN_EXP__ |
| #undef FLT128X_MIN_10_EXP |
| #define FLT128X_MIN_10_EXP __FLT128X_MIN_10_EXP__ |
| #undef FLT128X_MAX_EXP |
| #define FLT128X_MAX_EXP __FLT128X_MAX_EXP__ |
| #undef FLT128X_MAX_10_EXP |
| #define FLT128X_MAX_10_EXP __FLT128X_MAX_10_EXP__ |
| #undef FLT128X_MAX |
| #define FLT128X_MAX __FLT128X_MAX__ |
| #undef FLT128X_EPSILON |
| #define FLT128X_EPSILON __FLT128X_EPSILON__ |
| #undef FLT128X_MIN |
| #define FLT128X_MIN __FLT128X_MIN__ |
| #undef FLT128X_DECIMAL_DIG |
| #define FLT128X_DECIMAL_DIG __FLT128X_DECIMAL_DIG__ |
| #undef FLT128X_TRUE_MIN |
| #define FLT128X_TRUE_MIN __FLT128X_DENORM_MIN__ |
| #if defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L |
| #undef FLT128X_SNAN |
| #define FLT128X_SNAN (__builtin_nansf128x ("")) |
| #endif /* C2X */ |
| #endif /* __FLT128X_MANT_DIG__. */ |
| |
| #endif /* __STDC_WANT_IEC_60559_TYPES_EXT__. */ |
| |
| #ifdef __DEC32_MANT_DIG__ |
| #if (defined __STDC_WANT_DEC_FP__ \ |
| || defined __STDC_WANT_IEC_60559_DFP_EXT__ \ |
| || (defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L)) |
| /* C2X; formerly Technical Report 24732, extension for decimal |
| floating-point arithmetic: Characteristic of decimal floating types |
| <float.h>, and TS 18661-2. */ |
| |
| /* Number of base-FLT_RADIX digits in the significand, p. */ |
| #undef DEC32_MANT_DIG |
| #undef DEC64_MANT_DIG |
| #undef DEC128_MANT_DIG |
| #define DEC32_MANT_DIG __DEC32_MANT_DIG__ |
| #define DEC64_MANT_DIG __DEC64_MANT_DIG__ |
| #define DEC128_MANT_DIG __DEC128_MANT_DIG__ |
| |
| /* Minimum exponent. */ |
| #undef DEC32_MIN_EXP |
| #undef DEC64_MIN_EXP |
| #undef DEC128_MIN_EXP |
| #define DEC32_MIN_EXP __DEC32_MIN_EXP__ |
| #define DEC64_MIN_EXP __DEC64_MIN_EXP__ |
| #define DEC128_MIN_EXP __DEC128_MIN_EXP__ |
| |
| /* Maximum exponent. */ |
| #undef DEC32_MAX_EXP |
| #undef DEC64_MAX_EXP |
| #undef DEC128_MAX_EXP |
| #define DEC32_MAX_EXP __DEC32_MAX_EXP__ |
| #define DEC64_MAX_EXP __DEC64_MAX_EXP__ |
| #define DEC128_MAX_EXP __DEC128_MAX_EXP__ |
| |
| /* Maximum representable finite decimal floating-point number |
| (there are 6, 15, and 33 9s after the decimal points respectively). */ |
| #undef DEC32_MAX |
| #undef DEC64_MAX |
| #undef DEC128_MAX |
| #define DEC32_MAX __DEC32_MAX__ |
| #define DEC64_MAX __DEC64_MAX__ |
| #define DEC128_MAX __DEC128_MAX__ |
| |
| /* The difference between 1 and the least value greater than 1 that is |
| representable in the given floating point type. */ |
| #undef DEC32_EPSILON |
| #undef DEC64_EPSILON |
| #undef DEC128_EPSILON |
| #define DEC32_EPSILON __DEC32_EPSILON__ |
| #define DEC64_EPSILON __DEC64_EPSILON__ |
| #define DEC128_EPSILON __DEC128_EPSILON__ |
| |
| /* Minimum normalized positive floating-point number. */ |
| #undef DEC32_MIN |
| #undef DEC64_MIN |
| #undef DEC128_MIN |
| #define DEC32_MIN __DEC32_MIN__ |
| #define DEC64_MIN __DEC64_MIN__ |
| #define DEC128_MIN __DEC128_MIN__ |
| |
| /* 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 _Decimal32 |
| and _Decimal64 to the range and precision of the _Decimal64 |
| type, evaluate _Decimal128 operations and constants to the |
| range and precision of the _Decimal128 type; |
| 2 evaluate all operations and constants to the range and |
| precision of the _Decimal128 type. */ |
| |
| #undef DEC_EVAL_METHOD |
| #define DEC_EVAL_METHOD __DEC_EVAL_METHOD__ |
| |
| #endif /* __STDC_WANT_DEC_FP__ || __STDC_WANT_IEC_60559_DFP_EXT__ || C2X. */ |
| |
| #ifdef __STDC_WANT_DEC_FP__ |
| |
| /* Minimum subnormal positive floating-point number. */ |
| #undef DEC32_SUBNORMAL_MIN |
| #undef DEC64_SUBNORMAL_MIN |
| #undef DEC128_SUBNORMAL_MIN |
| #define DEC32_SUBNORMAL_MIN __DEC32_SUBNORMAL_MIN__ |
| #define DEC64_SUBNORMAL_MIN __DEC64_SUBNORMAL_MIN__ |
| #define DEC128_SUBNORMAL_MIN __DEC128_SUBNORMAL_MIN__ |
| |
| #endif /* __STDC_WANT_DEC_FP__. */ |
| |
| #if (defined __STDC_WANT_IEC_60559_DFP_EXT__ \ |
| || (defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L)) |
| |
| /* Minimum subnormal positive floating-point number. */ |
| #undef DEC32_TRUE_MIN |
| #undef DEC64_TRUE_MIN |
| #undef DEC128_TRUE_MIN |
| #define DEC32_TRUE_MIN __DEC32_SUBNORMAL_MIN__ |
| #define DEC64_TRUE_MIN __DEC64_SUBNORMAL_MIN__ |
| #define DEC128_TRUE_MIN __DEC128_SUBNORMAL_MIN__ |
| |
| #endif /* __STDC_WANT_IEC_60559_DFP_EXT__ || C2X. */ |
| |
| #if defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L |
| |
| /* Infinity in type _Decimal32. */ |
| #undef DEC_INFINITY |
| #define DEC_INFINITY (__builtin_infd32 ()) |
| |
| /* Quiet NaN in type _Decimal32. */ |
| #undef DEC_NAN |
| #define DEC_NAN (__builtin_nand32 ("")) |
| |
| /* Signaling NaN in each decimal floating-point type. */ |
| #undef DEC32_SNAN |
| #define DEC32_SNAN (__builtin_nansd32 ("")) |
| #undef DEC64_SNAN |
| #define DEC64_SNAN (__builtin_nansd64 ("")) |
| #undef DEC128_SNAN |
| #define DEC128_SNAN (__builtin_nansd128 ("")) |
| |
| #endif /* C2X */ |
| |
| #endif /* __DEC32_MANT_DIG__ */ |
| |
| #endif /* _FLOAT_H___ */ |
