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authorYang Zhang <yang.z.zhang@intel.com>2015-08-28 09:58:54 +0800
committerYang Zhang <yang.z.zhang@intel.com>2015-09-01 12:44:00 +0800
commite44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch)
tree66b09f592c55df2878107a468a91d21506104d3f /qemu/include/libdecnumber/dpd/decimal64.h
parent9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff)
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/include/libdecnumber/dpd/decimal64.h')
-rw-r--r--qemu/include/libdecnumber/dpd/decimal64.h100
1 files changed, 100 insertions, 0 deletions
diff --git a/qemu/include/libdecnumber/dpd/decimal64.h b/qemu/include/libdecnumber/dpd/decimal64.h
new file mode 100644
index 000000000..2f6c04940
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+++ b/qemu/include/libdecnumber/dpd/decimal64.h
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+/* Decimal 64-bit format module header for the decNumber C Library.
+ Copyright (C) 2005, 2007 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. */
+
+/* ------------------------------------------------------------------ */
+/* 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 "libdecnumber/decNumber.h"
+ #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 */
+ /* ---------------------------------------------------------------- */
+
+
+ /* 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 *);
+
+#endif