--- /dev/null
+/* Decimal 128-bit format module header for the decNumber C Library
+ Copyright (C) 2005 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
+ 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. */
+
+#if !defined(DECIMAL128)
+#define DECIMAL128
+#define DEC128NAME "decimal128" /* Short name */
+#define DEC128FULLNAME "Decimal 128-bit Number" /* Verbose name */
+#define DEC128AUTHOR "Mike Cowlishaw" /* Who to blame */
+
+#if defined(DECIMAL32)
+#error decimal128.h must precede decimal32.h for correct DECNUMDIGITS
+#else
+#if defined(DECIMAL64)
+#error decimal128.h must precede decimal64.h for correct DECNUMDIGITS
+#endif
+#endif
+
+ /* parameters for decimal128s */
+#define DECIMAL128_Bytes 16 /* length */
+#define DECIMAL128_Pmax 34 /* maximum precision (digits) */
+#define DECIMAL128_Emax 6144 /* maximum adjusted exponent */
+#define DECIMAL128_Emin -6143 /* minimum adjusted exponent */
+#define DECIMAL128_Bias 6176 /* bias for the exponent */
+#define DECIMAL128_String 43 /* maximum string length, +1 */
+ /* highest biased exponent (Elimit-1) */
+#define DECIMAL128_Ehigh (DECIMAL128_Emax+DECIMAL128_Bias-DECIMAL128_Pmax+1)
+
+#ifndef DECNUMDIGITS
+#define DECNUMDIGITS DECIMAL128_Pmax /* size if not already defined */
+#endif
+#ifndef DECNUMBER
+#include "decNumber.h" /* context and number library */
+#endif
+
+ /* Decimal 128-bit type, accessible by bytes */
+typedef struct
+{
+ uint8_t bytes[DECIMAL128_Bytes]; /* decimal128: 1, 5, 12, 110 bits */
+} decimal128;
+
+ /* 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 decimal128 fields. These assume the argument
+ is a reference (pointer) to the decimal128 structure */
+ /* Get sign */
+#define decimal128Sign(d) ((unsigned)(d)->bytes[0]>>7)
+
+ /* Get combination field */
+#define decimal128Comb(d) (((d)->bytes[0] & 0x7c)>>2)
+
+ /* Get exponent continuation [does not remove bias] */
+#define decimal128ExpCon(d) ((((d)->bytes[0] & 0x03)<<10) \
+ | ((unsigned)(d)->bytes[1]<<2) \
+ | ((unsigned)(d)->bytes[2]>>6))
+
+ /* Set sign [this assumes sign previously 0] */
+#define decimal128SetSign(d, b) { \
+ (d)->bytes[0]|=((unsigned)(b)<<7);}
+
+ /* Clear sign */
+#define decimal128ClearSign(d) {(d)->bytes[0]&=~0x80;}
+
+ /* Flip sign */
+#define decimal128FlipSign(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 decimal128SetExpCon(d, e) { \
+ (d)->bytes[0]|=(uint8_t)((e)>>10); \
+ (d)->bytes[1] =(uint8_t)(((e)&0x3fc)>>2); \
+ (d)->bytes[2]|=(uint8_t)(((e)&0x03)<<6);}
+
+ /* ------------------------------------------------------------------ */
+ /* Routines */
+ /* ------------------------------------------------------------------ */
+
+#ifdef IN_LIBGCC2
+#ifndef decimal128FromString
+#define decimal128FromString __decimal128FromString
+#define decimal128ToString __decimal128ToString
+#define decimal128ToEngString __decimal128ToEngString
+#define decimal128FromNumber __decimal128FromNumber
+#define decimal128ToNumber __decimal128ToNumber
+#endif
+#endif
+
+ /* String conversions */
+decimal128 *decimal128FromString (decimal128 *, const char *, decContext *);
+char *decimal128ToString (const decimal128 *, char *);
+char *decimal128ToEngString (const decimal128 *, char *);
+
+ /* decNumber conversions */
+decimal128 *decimal128FromNumber (decimal128 *, const decNumber *, decContext *);
+decNumber *decimal128ToNumber (const decimal128 *, decNumber *);
+
+#endif
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