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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [libdecnumber/] [dpd/] [decimal64.h] - Rev 309
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/* Decimal 64-bit format module header for the decNumber C Library. Copyright (C) 2005, 2007, 2009 Free Software Foundation, Inc. Contributed by IBM Corporation. Author Mike Cowlishaw. 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/>. */ /* ------------------------------------------------------------------ */ /* Decimal 64-bit format module header */ /* ------------------------------------------------------------------ */ #if !defined(DECIMAL64) #define DECIMAL64 #define DEC64NAME "decimal64" /* Short name */ #define DEC64FULLNAME "Decimal 64-bit Number" /* Verbose name */ #define DEC64AUTHOR "Mike Cowlishaw" /* Who to blame */ /* parameters for decimal64s */ #define DECIMAL64_Bytes 8 /* length */ #define DECIMAL64_Pmax 16 /* maximum precision (digits) */ #define DECIMAL64_Emax 384 /* maximum adjusted exponent */ #define DECIMAL64_Emin -383 /* minimum adjusted exponent */ #define DECIMAL64_Bias 398 /* bias for the exponent */ #define DECIMAL64_String 24 /* maximum string length, +1 */ #define DECIMAL64_EconL 8 /* exp. continuation length */ /* highest biased exponent (Elimit-1) */ #define DECIMAL64_Ehigh (DECIMAL64_Emax+DECIMAL64_Bias-DECIMAL64_Pmax+1) /* check enough digits, if pre-defined */ #if defined(DECNUMDIGITS) #if (DECNUMDIGITS<DECIMAL64_Pmax) #error decimal64.h needs pre-defined DECNUMDIGITS>=16 for safe use #endif #endif #ifndef DECNUMDIGITS #define DECNUMDIGITS DECIMAL64_Pmax /* size if not already defined*/ #endif #ifndef DECNUMBER #include "decNumber.h" /* context and number library */ #endif /* Decimal 64-bit type, accessible by bytes */ typedef struct { uint8_t bytes[DECIMAL64_Bytes]; /* decimal64: 1, 5, 8, 50 bits*/ } decimal64; /* special values [top byte excluding sign bit; last two bits are */ /* don't-care for Infinity on input, last bit don't-care for NaN] */ #if !defined(DECIMAL_NaN) #define DECIMAL_NaN 0x7c /* 0 11111 00 NaN */ #define DECIMAL_sNaN 0x7e /* 0 11111 10 sNaN */ #define DECIMAL_Inf 0x78 /* 0 11110 00 Infinity */ #endif /* ---------------------------------------------------------------- */ /* Routines */ /* ---------------------------------------------------------------- */ #include "decimal64Symbols.h" #ifdef __cplusplus extern "C" { #endif /* String conversions */ decimal64 * decimal64FromString(decimal64 *, const char *, decContext *); char * decimal64ToString(const decimal64 *, char *); char * decimal64ToEngString(const decimal64 *, char *); /* decNumber conversions */ decimal64 * decimal64FromNumber(decimal64 *, const decNumber *, decContext *); decNumber * decimal64ToNumber(const decimal64 *, decNumber *); /* Format-dependent utilities */ uint32_t decimal64IsCanonical(const decimal64 *); decimal64 * decimal64Canonical(decimal64 *, const decimal64 *); #ifdef __cplusplus } #endif #endif
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