1 1.1 mrg /* Decimal 32-bit format module header for the decNumber C Library. 2 1.12 mrg Copyright (C) 2005-2022 Free Software Foundation, Inc. 3 1.1 mrg Contributed by IBM Corporation. Author Mike Cowlishaw. 4 1.1 mrg 5 1.1 mrg This file is part of GCC. 6 1.1 mrg 7 1.1 mrg GCC is free software; you can redistribute it and/or modify it under 8 1.1 mrg the terms of the GNU General Public License as published by the Free 9 1.1 mrg Software Foundation; either version 3, or (at your option) any later 10 1.1 mrg version. 11 1.1 mrg 12 1.1 mrg GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13 1.1 mrg WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 1.1 mrg FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 1.1 mrg for more details. 16 1.1 mrg 17 1.1 mrg Under Section 7 of GPL version 3, you are granted additional 18 1.1 mrg permissions described in the GCC Runtime Library Exception, version 19 1.1 mrg 3.1, as published by the Free Software Foundation. 20 1.1 mrg 21 1.1 mrg You should have received a copy of the GNU General Public License and 22 1.1 mrg a copy of the GCC Runtime Library Exception along with this program; 23 1.1 mrg see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 24 1.1 mrg <http://www.gnu.org/licenses/>. */ 25 1.1 mrg 26 1.1 mrg /* ------------------------------------------------------------------ */ 27 1.1 mrg /* Decimal 32-bit format module header */ 28 1.1 mrg /* ------------------------------------------------------------------ */ 29 1.1 mrg 30 1.1 mrg #if !defined(DECIMAL32) 31 1.1 mrg #define DECIMAL32 32 1.1 mrg #define DEC32NAME "decimal32" /* Short name */ 33 1.1 mrg #define DEC32FULLNAME "Decimal 32-bit Number" /* Verbose name */ 34 1.1 mrg #define DEC32AUTHOR "Mike Cowlishaw" /* Who to blame */ 35 1.1 mrg 36 1.1 mrg /* parameters for decimal32s */ 37 1.1 mrg #define DECIMAL32_Bytes 4 /* length */ 38 1.1 mrg #define DECIMAL32_Pmax 7 /* maximum precision (digits) */ 39 1.1 mrg #define DECIMAL32_Emax 96 /* maximum adjusted exponent */ 40 1.1 mrg #define DECIMAL32_Emin -95 /* minimum adjusted exponent */ 41 1.1 mrg #define DECIMAL32_Bias 101 /* bias for the exponent */ 42 1.1 mrg #define DECIMAL32_String 15 /* maximum string length, +1 */ 43 1.1 mrg #define DECIMAL32_EconL 6 /* exp. continuation length */ 44 1.1 mrg /* highest biased exponent (Elimit-1) */ 45 1.1 mrg #define DECIMAL32_Ehigh (DECIMAL32_Emax+DECIMAL32_Bias-DECIMAL32_Pmax+1) 46 1.1 mrg 47 1.1 mrg /* check enough digits, if pre-defined */ 48 1.1 mrg #if defined(DECNUMDIGITS) 49 1.1 mrg #if (DECNUMDIGITS<DECIMAL32_Pmax) 50 1.1 mrg #error decimal32.h needs pre-defined DECNUMDIGITS>=7 for safe use 51 1.1 mrg #endif 52 1.1 mrg #endif 53 1.1 mrg 54 1.1 mrg #ifndef DECNUMDIGITS 55 1.1 mrg #define DECNUMDIGITS DECIMAL32_Pmax /* size if not already defined*/ 56 1.1 mrg #endif 57 1.1 mrg #ifndef DECNUMBER 58 1.1 mrg #include "decNumber.h" /* context and number library */ 59 1.1 mrg #endif 60 1.1 mrg 61 1.1 mrg /* Decimal 32-bit type, accessible by bytes */ 62 1.1 mrg typedef struct { 63 1.1 mrg uint8_t bytes[DECIMAL32_Bytes]; /* decimal32: 1, 5, 6, 20 bits*/ 64 1.1 mrg } decimal32; 65 1.1 mrg 66 1.1 mrg /* special values [top byte excluding sign bit; last two bits are */ 67 1.1 mrg /* don't-care for Infinity on input, last bit don't-care for NaN] */ 68 1.1 mrg #if !defined(DECIMAL_NaN) 69 1.1 mrg #define DECIMAL_NaN 0x7c /* 0 11111 00 NaN */ 70 1.1 mrg #define DECIMAL_sNaN 0x7e /* 0 11111 10 sNaN */ 71 1.1 mrg #define DECIMAL_Inf 0x78 /* 0 11110 00 Infinity */ 72 1.1 mrg #endif 73 1.1 mrg 74 1.1 mrg /* ---------------------------------------------------------------- */ 75 1.1 mrg /* Routines */ 76 1.1 mrg /* ---------------------------------------------------------------- */ 77 1.1 mrg 78 1.1 mrg #include "decimal32Symbols.h" 79 1.1 mrg 80 1.1 mrg #ifdef __cplusplus 81 1.1 mrg extern "C" { 82 1.1 mrg #endif 83 1.1 mrg 84 1.1 mrg /* String conversions */ 85 1.1 mrg decimal32 * decimal32FromString(decimal32 *, const char *, decContext *); 86 1.1 mrg char * decimal32ToString(const decimal32 *, char *); 87 1.1 mrg char * decimal32ToEngString(const decimal32 *, char *); 88 1.1 mrg 89 1.1 mrg /* decNumber conversions */ 90 1.1 mrg decimal32 * decimal32FromNumber(decimal32 *, const decNumber *, 91 1.1 mrg decContext *); 92 1.1 mrg decNumber * decimal32ToNumber(const decimal32 *, decNumber *); 93 1.1 mrg 94 1.1 mrg /* Format-dependent utilities */ 95 1.1 mrg uint32_t decimal32IsCanonical(const decimal32 *); 96 1.1 mrg decimal32 * decimal32Canonical(decimal32 *, const decimal32 *); 97 1.1 mrg 98 1.1 mrg #ifdef __cplusplus 99 1.1 mrg } 100 1.1 mrg #endif 101 1.1 mrg 102 1.1 mrg #endif 103
Indexes created Mon Mar 02 05:31:46 UTC 2026