-/* Decimal 32-bit format module header for the decNumber C Library
- Copyright (C) 2005 Free Software Foundation, Inc.
+/* Decimal 32-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 2, or (at your option) any later
+ Software Foundation; either version 3, or (at your option) any later
version.
- In addition to the permissions in the GNU General Public License,
- the Free Software Foundation gives you unlimited permission to link
- the compiled version of this file into combinations with other
- programs, and to distribute those combinations without any
- restriction coming from the use of this file. (The General Public
- License restrictions do apply in other respects; for example, they
- cover modification of the file, and distribution when not linked
- into a combine executable.)
-
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.
- You should have received a copy of the GNU General Public License
- along with GCC; see the file COPYING. If not, write to the Free
- Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
- 02110-1301, USA. */
+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 32-bit format module header */
+/* ------------------------------------------------------------------ */
#if !defined(DECIMAL32)
-#define DECIMAL32
-#define DEC32NAME "decimal32" /* Short name */
-#define DEC32FULLNAME "Decimal 32-bit Number" /* Verbose name */
-#define DEC32AUTHOR "Mike Cowlishaw" /* Who to blame */
+ #define DECIMAL32
+ #define DEC32NAME "decimal32" /* Short name */
+ #define DEC32FULLNAME "Decimal 32-bit Number" /* Verbose name */
+ #define DEC32AUTHOR "Mike Cowlishaw" /* Who to blame */
/* parameters for decimal32s */
-#define DECIMAL32_Bytes 4 /* length */
-#define DECIMAL32_Pmax 7 /* maximum precision (digits) */
-#define DECIMAL32_Emax 96 /* maximum adjusted exponent */
-#define DECIMAL32_Emin -95 /* minimum adjusted exponent */
-#define DECIMAL32_Bias 101 /* bias for the exponent */
-#define DECIMAL32_String 15 /* maximum string length, +1 */
- /* highest biased exponent (Elimit-1) */
-#define DECIMAL32_Ehigh (DECIMAL32_Emax+DECIMAL32_Bias-DECIMAL32_Pmax+1)
-
-#ifndef DECNUMDIGITS
-#define DECNUMDIGITS DECIMAL32_Pmax /* size if not already defined */
-#endif
-#ifndef DECNUMBER
-#include "decNumber.h" /* context and number library */
-#endif
+ #define DECIMAL32_Bytes 4 /* length */
+ #define DECIMAL32_Pmax 7 /* maximum precision (digits) */
+ #define DECIMAL32_Emax 96 /* maximum adjusted exponent */
+ #define DECIMAL32_Emin -95 /* minimum adjusted exponent */
+ #define DECIMAL32_Bias 101 /* bias for the exponent */
+ #define DECIMAL32_String 15 /* maximum string length, +1 */
+ #define DECIMAL32_EconL 6 /* exp. continuation length */
+ /* highest biased exponent (Elimit-1) */
+ #define DECIMAL32_Ehigh (DECIMAL32_Emax+DECIMAL32_Bias-DECIMAL32_Pmax+1)
+
+ /* check enough digits, if pre-defined */
+ #if defined(DECNUMDIGITS)
+ #if (DECNUMDIGITS<DECIMAL32_Pmax)
+ #error decimal32.h needs pre-defined DECNUMDIGITS>=7 for safe use
+ #endif
+ #endif
+
+ #ifndef DECNUMDIGITS
+ #define DECNUMDIGITS DECIMAL32_Pmax /* size if not already defined*/
+ #endif
+ #ifndef DECNUMBER
+ #include "decNumber.h" /* context and number library */
+ #endif
/* Decimal 32-bit type, accessible by bytes */
-typedef struct
-{
- uint8_t bytes[DECIMAL32_Bytes]; /* decimal32: 1, 5, 6, 20 bits */
-} decimal32;
-
- /* 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
-
- /* Macros for accessing decimal32 fields. These assume the argument
- is a reference (pointer) to the decimal32 structure */
- /* Get sign */
-#define decimal32Sign(d) ((unsigned)(d)->bytes[0]>>7)
-
- /* Get combination field */
-#define decimal32Comb(d) (((d)->bytes[0] & 0x7c)>>2)
-
- /* Get exponent continuation [does not remove bias] */
-#define decimal32ExpCon(d) ((((d)->bytes[0] & 0x03)<<4) \
- | ((unsigned)(d)->bytes[1]>>4))
-
- /* Set sign [this assumes sign previously 0] */
-#define decimal32SetSign(d, b) { \
- (d)->bytes[0]|=((unsigned)(b)<<7);}
-
- /* Clear sign */
-#define decimal32ClearSign(d) {(d)->bytes[0]&=~0x80;}
-
- /* Flip sign */
-#define decimal32FlipSign(d) {(d)->bytes[0]^=0x80;}
-
- /* Set exponent continuation [does not apply bias] */
- /* This assumes range has been checked and exponent previously 0; */
- /* type of exponent must be unsigned */
-#define decimal32SetExpCon(d, e) { \
- (d)->bytes[0]|=(uint8_t)((e)>>4); \
- (d)->bytes[1]|=(uint8_t)(((e)&0x0F)<<4);}
-
- /* ------------------------------------------------------------------ */
- /* Routines */
- /* ------------------------------------------------------------------ */
-
-#ifdef IN_LIBGCC2
-#ifndef decimal32FromString
-#define decimal32FromString __decimal32FromString
-#define decimal32ToString __decimal32ToString
-#define decimal32ToEngString __decimal32ToEngString
-#define decimal32FromNumber __decimal32FromNumber
-#define decimal32ToNumber __decimal32ToNumber
-#endif
-#endif
-
-/* String conversions. */
-decimal32 *decimal32FromString (decimal32 *, const char *, decContext *);
-char *decimal32ToString (const decimal32 *, char *);
-char *decimal32ToEngString (const decimal32 *, char *);
-
-/* decNumber conversions. */
-decimal32 *decimal32FromNumber (decimal32 *, const decNumber *, decContext *);
-decNumber *decimal32ToNumber (const decimal32 *, decNumber *);
+ typedef struct {
+ uint8_t bytes[DECIMAL32_Bytes]; /* decimal32: 1, 5, 6, 20 bits*/
+ } decimal32;
+
+ /* 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 "decimal32Symbols.h"
+
+ /* String conversions */
+ decimal32 * decimal32FromString(decimal32 *, const char *, decContext *);
+ char * decimal32ToString(const decimal32 *, char *);
+ char * decimal32ToEngString(const decimal32 *, char *);
+
+ /* decNumber conversions */
+ decimal32 * decimal32FromNumber(decimal32 *, const decNumber *,
+ decContext *);
+ decNumber * decimal32ToNumber(const decimal32 *, decNumber *);
+
+ /* Format-dependent utilities */
+ uint32_t decimal32IsCanonical(const decimal32 *);
+ decimal32 * decimal32Canonical(decimal32 *, const decimal32 *);
#endif
OSDN Git Service
