projects / thirdparty / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| f5bc1778 DJ |
1 | /* Decimal 64-bit format module header for the decNumber C Library. |
| 2 | Copyright (C) 2005, 2007 Free Software Foundation, Inc. | |
| 3 | Contributed by IBM Corporation. Author Mike Cowlishaw. | |
| 4 | ||
| 5 | This file is part of GCC. | |
| 6 | ||
| 7 | GCC is free software; you can redistribute it and/or modify it under | |
| 8 | the terms of the GNU General Public License as published by the Free | |
| 9 | Software Foundation; either version 2, or (at your option) any later | |
| 10 | version. | |
| 11 | ||
| 12 | In addition to the permissions in the GNU General Public License, | |
| 13 | the Free Software Foundation gives you unlimited permission to link | |
| 14 | the compiled version of this file into combinations with other | |
| 15 | programs, and to distribute those combinations without any | |
| 16 | restriction coming from the use of this file. (The General Public | |
| 17 | License restrictions do apply in other respects; for example, they | |
| 18 | cover modification of the file, and distribution when not linked | |
| 19 | into a combine executable.) | |
| 20 | ||
| 21 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 22 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 23 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 24 | for more details. | |
| 25 | ||
| 26 | You should have received a copy of the GNU General Public License | |
| 27 | along with GCC; see the file COPYING. If not, write to the Free | |
| 28 | Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA | |
| 29 | 02110-1301, USA. */ | |
| 30 | ||
| 31 | /* ------------------------------------------------------------------ */ | |
| 32 | /* Decimal 64-bit format module header */ | |
| 33 | /* ------------------------------------------------------------------ */ | |
| 34 | ||
| 35 | #if !defined(DECIMAL64) | |
| 36 | #define DECIMAL64 | |
| 37 | #define DEC64NAME "decimal64" /* Short name */ | |
| 87d32bb7 | 38 | #define DEC64FULLNAME "Decimal 64-bit Number" /* Verbose name */ |
| f5bc1778 DJ |
39 | #define DEC64AUTHOR "Mike Cowlishaw" /* Who to blame */ |
| 40 | ||
| 41 | ||
| 42 | /* parameters for decimal64s */ | |
| 43 | #define DECIMAL64_Bytes 8 /* length */ | |
| 44 | #define DECIMAL64_Pmax 16 /* maximum precision (digits) */ | |
| 45 | #define DECIMAL64_Emax 384 /* maximum adjusted exponent */ | |
| 46 | #define DECIMAL64_Emin -383 /* minimum adjusted exponent */ | |
| 47 | #define DECIMAL64_Bias 398 /* bias for the exponent */ | |
| 48 | #define DECIMAL64_String 24 /* maximum string length, +1 */ | |
| 49 | #define DECIMAL64_EconL 8 /* exp. continuation length */ | |
| 87d32bb7 | 50 | /* highest biased exponent (Elimit-1) */ |
| f5bc1778 DJ |
51 | #define DECIMAL64_Ehigh (DECIMAL64_Emax+DECIMAL64_Bias-DECIMAL64_Pmax+1) |
| 52 | ||
| 53 | /* check enough digits, if pre-defined */ | |
| 54 | #if defined(DECNUMDIGITS) | |
| 55 | #if (DECNUMDIGITS<DECIMAL64_Pmax) | |
| 56 | #error decimal64.h needs pre-defined DECNUMDIGITS>=16 for safe use | |
| 57 | #endif | |
| 58 | #endif | |
| 59 | ||
| 60 | ||
| 61 | #ifndef DECNUMDIGITS | |
| 62 | #define DECNUMDIGITS DECIMAL64_Pmax /* size if not already defined*/ | |
| 63 | #endif | |
| 64 | #ifndef DECNUMBER | |
| 65 | #include "decNumber.h" /* context and number library */ | |
| 66 | #endif | |
| 67 | ||
| 68 | /* Decimal 64-bit type, accessible by bytes */ | |
| 69 | typedef struct { | |
| 70 | uint8_t bytes[DECIMAL64_Bytes]; /* decimal64: 1, 5, 8, 50 bits*/ | |
| 71 | } decimal64; | |
| 72 | ||
| 73 | /* special values [top byte excluding sign bit; last two bits are */ | |
| 74 | /* don't-care for Infinity on input, last bit don't-care for NaN] */ | |
| 75 | #if !defined(DECIMAL_NaN) | |
| 87d32bb7 | 76 | #define DECIMAL_NaN 0x7c /* 0 11111 00 NaN */ |
| f5bc1778 | 77 | #define DECIMAL_sNaN 0x7e /* 0 11111 10 sNaN */ |
| 87d32bb7 | 78 | #define DECIMAL_Inf 0x78 /* 0 11110 00 Infinity */ |
| f5bc1778 DJ |
79 | #endif |
| 80 | ||
| 81 | /* ---------------------------------------------------------------- */ | |
| 82 | /* Routines */ | |
| 83 | /* ---------------------------------------------------------------- */ | |
| 84 | ||
| 87d32bb7 | 85 | #include "decimal64Symbols.h" |
| f5bc1778 | 86 | |
| 87d32bb7 | 87 | /* String conversions */ |
| f5bc1778 DJ |
88 | decimal64 * decimal64FromString(decimal64 *, const char *, decContext *); |
| 89 | char * decimal64ToString(const decimal64 *, char *); | |
| 90 | char * decimal64ToEngString(const decimal64 *, char *); | |
| 91 | ||
| 92 | /* decNumber conversions */ | |
| 93 | decimal64 * decimal64FromNumber(decimal64 *, const decNumber *, | |
| 94 | decContext *); | |
| 95 | decNumber * decimal64ToNumber(const decimal64 *, decNumber *); | |
| 96 | ||
| 87d32bb7 | 97 | /* Format-dependent utilities */ |
| f5bc1778 DJ |
98 | uint32_t decimal64IsCanonical(const decimal64 *); |
| 99 | decimal64 * decimal64Canonical(decimal64 *, const decimal64 *); | |
| 100 | ||
| 101 | #endif |