[deliverable/binutils-gdb.git] / libdecnumber / decContext.h

/* Decimal context header module for the decNumber C Library.
   Copyright (C) 2005-2018 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 Context module header				      */
/* ------------------------------------------------------------------ */
/*								      */
/* Context variables must always have valid values:		      */
/*								      */
/*  status   -- [any bits may be cleared, but not set, by user]       */
/*  round    -- must be one of the enumerated rounding modes	      */
/*								      */
/* The following variables are implied for fixed size formats (i.e.,  */
/* they are ignored) but should still be set correctly in case used   */
/* with decNumber functions:					      */
/*								      */
/*  clamp    -- must be either 0 or 1				      */
/*  digits   -- must be in the range 1 through 999999999	      */
/*  emax     -- must be in the range 0 through 999999999	      */
/*  emin     -- must be in the range 0 through -999999999	      */
/*  extended -- must be either 0 or 1 [present only if DECSUBSET]     */
/*  traps    -- only defined bits may be set			      */
/*								      */
/* ------------------------------------------------------------------ */

#if !defined(DECCONTEXT)
  #define DECCONTEXT
  #define DECCNAME     "decContext"			/* Short name */
  #define DECCFULLNAME "Decimal Context Descriptor"   /* Verbose name */
  #define DECCAUTHOR   "Mike Cowlishaw" 	      /* Who to blame */

  #include "gstdint.h"		   /* C99 standard integers	      */
  #include <stdio.h>		   /* for printf, etc.		      */
  #include <signal.h>		   /* for traps 		      */

  /* Extended flags setting -- set this to 0 to use only IEEE flags   */
  #if !defined(DECEXTFLAG)
  #define DECEXTFLAG 1		   /* 1=enable extended flags	      */
  #endif

  /* Conditional code flag -- set this to 0 for best performance      */
  #if !defined(DECSUBSET)
  #define DECSUBSET  0		   /* 1=enable subset arithmetic      */
  #endif

  /* Context for operations, with associated constants		      */
  enum rounding {
    DEC_ROUND_CEILING,		   /* round towards +infinity	      */
    DEC_ROUND_UP,		   /* round away from 0 	      */
    DEC_ROUND_HALF_UP,		   /* 0.5 rounds up		      */
    DEC_ROUND_HALF_EVEN,	   /* 0.5 rounds to nearest even      */
    DEC_ROUND_HALF_DOWN,	   /* 0.5 rounds down		      */
    DEC_ROUND_DOWN,		   /* round towards 0 (truncate)      */
    DEC_ROUND_FLOOR,		   /* round towards -infinity	      */
    DEC_ROUND_05UP,		   /* round for reround 	      */
    DEC_ROUND_MAX		   /* enum must be less than this     */
    };
  #define DEC_ROUND_DEFAULT DEC_ROUND_HALF_EVEN;

  typedef struct {
    int32_t  digits;		   /* working precision 	      */
    int32_t  emax;		   /* maximum positive exponent       */
    int32_t  emin;		   /* minimum negative exponent       */
    enum     rounding round;	   /* rounding mode		      */
    uint32_t traps;		   /* trap-enabler flags	      */
    uint32_t status;		   /* status flags		      */
    uint8_t  clamp;		   /* flag: apply IEEE exponent clamp */
    #if DECSUBSET
    uint8_t  extended;		   /* flag: special-values allowed    */
    #endif
    } decContext;

  /* Maxima and Minima for context settings			      */
  #define DEC_MAX_DIGITS 999999999
  #define DEC_MIN_DIGITS	 1
  #define DEC_MAX_EMAX	 999999999
  #define DEC_MIN_EMAX		 0
  #define DEC_MAX_EMIN		 0
  #define DEC_MIN_EMIN	-999999999
  #define DEC_MAX_MATH	    999999 /* max emax, etc., for math funcs. */

  /* Classifications for decimal numbers, aligned with 754 (note that */
  /* 'normal' and 'subnormal' are meaningful only with a decContext   */
  /* or a fixed size format).					      */
  enum decClass {
    DEC_CLASS_SNAN,
    DEC_CLASS_QNAN,
    DEC_CLASS_NEG_INF,
    DEC_CLASS_NEG_NORMAL,
    DEC_CLASS_NEG_SUBNORMAL,
    DEC_CLASS_NEG_ZERO,
    DEC_CLASS_POS_ZERO,
    DEC_CLASS_POS_SUBNORMAL,
    DEC_CLASS_POS_NORMAL,
    DEC_CLASS_POS_INF
    };
  /* Strings for the decClasses */
  #define DEC_ClassString_SN  "sNaN"
  #define DEC_ClassString_QN  "NaN"
  #define DEC_ClassString_NI  "-Infinity"
  #define DEC_ClassString_NN  "-Normal"
  #define DEC_ClassString_NS  "-Subnormal"
  #define DEC_ClassString_NZ  "-Zero"
  #define DEC_ClassString_PZ  "+Zero"
  #define DEC_ClassString_PS  "+Subnormal"
  #define DEC_ClassString_PN  "+Normal"
  #define DEC_ClassString_PI  "+Infinity"
  #define DEC_ClassString_UN  "Invalid"

  /* Trap-enabler and Status flags (exceptional conditions), and      */
  /* their names.  The top byte is reserved for internal use	      */
  #if DECEXTFLAG
    /* Extended flags */
    #define DEC_Conversion_syntax    0x00000001
    #define DEC_Division_by_zero     0x00000002
    #define DEC_Division_impossible  0x00000004
    #define DEC_Division_undefined   0x00000008
    #define DEC_Insufficient_storage 0x00000010 /* [when malloc fails]	*/
    #define DEC_Inexact 	     0x00000020
    #define DEC_Invalid_context      0x00000040
    #define DEC_Invalid_operation    0x00000080
    #if DECSUBSET
    #define DEC_Lost_digits	     0x00000100
    #endif
    #define DEC_Overflow	     0x00000200
    #define DEC_Clamped 	     0x00000400
    #define DEC_Rounded 	     0x00000800
    #define DEC_Subnormal	     0x00001000
    #define DEC_Underflow	     0x00002000
  #else
    /* IEEE flags only */
    #define DEC_Conversion_syntax    0x00000010
    #define DEC_Division_by_zero     0x00000002
    #define DEC_Division_impossible  0x00000010
    #define DEC_Division_undefined   0x00000010
    #define DEC_Insufficient_storage 0x00000010 /* [when malloc fails]	*/
    #define DEC_Inexact 	     0x00000001
    #define DEC_Invalid_context      0x00000010
    #define DEC_Invalid_operation    0x00000010
    #if DECSUBSET
    #define DEC_Lost_digits	     0x00000000
    #endif
    #define DEC_Overflow	     0x00000008
    #define DEC_Clamped 	     0x00000000
    #define DEC_Rounded 	     0x00000000
    #define DEC_Subnormal	     0x00000000
    #define DEC_Underflow	     0x00000004
  #endif

  /* IEEE 754 groupings for the flags				      */
  /* [DEC_Clamped, DEC_Lost_digits, DEC_Rounded, and DEC_Subnormal    */
  /* are not in IEEE 754]					      */
  #define DEC_IEEE_754_Division_by_zero  (DEC_Division_by_zero)
  #if DECSUBSET
  #define DEC_IEEE_754_Inexact		 (DEC_Inexact | DEC_Lost_digits)
  #else
  #define DEC_IEEE_754_Inexact		 (DEC_Inexact)
  #endif
  #define DEC_IEEE_754_Invalid_operation (DEC_Conversion_syntax |     \
					  DEC_Division_impossible |   \
					  DEC_Division_undefined |    \
					  DEC_Insufficient_storage |  \
					  DEC_Invalid_context |       \
					  DEC_Invalid_operation)
  #define DEC_IEEE_754_Overflow 	 (DEC_Overflow)
  #define DEC_IEEE_754_Underflow	 (DEC_Underflow)

  /* flags which are normally errors (result is qNaN, infinite, or 0) */
  #define DEC_Errors (DEC_IEEE_754_Division_by_zero |		      \
		      DEC_IEEE_754_Invalid_operation |		      \
		      DEC_IEEE_754_Overflow | DEC_IEEE_754_Underflow)
  /* flags which cause a result to become qNaN			      */
  #define DEC_NaNs    DEC_IEEE_754_Invalid_operation

  /* flags which are normally for information only (finite results)   */
  #if DECSUBSET
  #define DEC_Information (DEC_Clamped | DEC_Rounded | DEC_Inexact    \
			  | DEC_Lost_digits)
  #else
  #define DEC_Information (DEC_Clamped | DEC_Rounded | DEC_Inexact)
  #endif

  /* IEEE 854 names (for compatibility with older decNumber versions) */
  #define DEC_IEEE_854_Division_by_zero  DEC_IEEE_754_Division_by_zero
  #define DEC_IEEE_854_Inexact		 DEC_IEEE_754_Inexact
  #define DEC_IEEE_854_Invalid_operation DEC_IEEE_754_Invalid_operation
  #define DEC_IEEE_854_Overflow 	 DEC_IEEE_754_Overflow
  #define DEC_IEEE_854_Underflow	 DEC_IEEE_754_Underflow

  /* Name strings for the exceptional conditions		      */
  #define DEC_Condition_CS "Conversion syntax"
  #define DEC_Condition_DZ "Division by zero"
  #define DEC_Condition_DI "Division impossible"
  #define DEC_Condition_DU "Division undefined"
  #define DEC_Condition_IE "Inexact"
  #define DEC_Condition_IS "Insufficient storage"
  #define DEC_Condition_IC "Invalid context"
  #define DEC_Condition_IO "Invalid operation"
  #if DECSUBSET
  #define DEC_Condition_LD "Lost digits"
  #endif
  #define DEC_Condition_OV "Overflow"
  #define DEC_Condition_PA "Clamped"
  #define DEC_Condition_RO "Rounded"
  #define DEC_Condition_SU "Subnormal"
  #define DEC_Condition_UN "Underflow"
  #define DEC_Condition_ZE "No status"
  #define DEC_Condition_MU "Multiple status"
  #define DEC_Condition_Length 21  /* length of the longest string,   */
				   /* including terminator	      */

  /* Initialization descriptors, used by decContextDefault	      */
  #define DEC_INIT_BASE 	0
  #define DEC_INIT_DECIMAL32   32
  #define DEC_INIT_DECIMAL64   64
  #define DEC_INIT_DECIMAL128 128
  /* Synonyms */
  #define DEC_INIT_DECSINGLE  DEC_INIT_DECIMAL32
  #define DEC_INIT_DECDOUBLE  DEC_INIT_DECIMAL64
  #define DEC_INIT_DECQUAD    DEC_INIT_DECIMAL128

  /* decContext routines					      */

  #include "decContextSymbols.h"

  #ifdef __cplusplus
  extern "C" {
  #endif

  extern decContext  * decContextClearStatus(decContext *, uint32_t);
  extern decContext  * decContextDefault(decContext *, int32_t);
  extern enum rounding decContextGetRounding(decContext *);
  extern uint32_t      decContextGetStatus(decContext *);
  extern decContext  * decContextRestoreStatus(decContext *, uint32_t, uint32_t);
  extern uint32_t      decContextSaveStatus(decContext *, uint32_t);
  extern decContext  * decContextSetRounding(decContext *, enum rounding);
  extern decContext  * decContextSetStatus(decContext *, uint32_t);
  extern decContext  * decContextSetStatusFromString(decContext *, const char *);
  extern decContext  * decContextSetStatusFromStringQuiet(decContext *, const char *);
  extern decContext  * decContextSetStatusQuiet(decContext *, uint32_t);
  extern const char  * decContextStatusToString(const decContext *);
  extern int32_t       decContextTestEndian(uint8_t);
  extern uint32_t      decContextTestSavedStatus(uint32_t, uint32_t);
  extern uint32_t      decContextTestStatus(decContext *, uint32_t);
  extern decContext  * decContextZeroStatus(decContext *);

  #ifdef __cplusplus
  }
  #endif

#endif
Commit	Line	Data
f5bc1778	1	/* Decimal context header module for the decNumber C Library.
f57a3bca	2	Copyright (C) 2005-2018 Free Software Foundation, Inc.
f5bc1778 DJ	3	Contributed by IBM Corporation. Author Mike Cowlishaw.
	4
	5	This file is part of GCC.
	6
	7	GCC is free software; you can redistribute it and/or modify it under
	8	the terms of the GNU General Public License as published by the Free
168a2f77	9	Software Foundation; either version 3, or (at your option) any later
f5bc1778 DJ	10	version.
f5bc1778 DJ	11
f5bc1778 DJ	12	GCC is distributed in the hope that it will be useful, but WITHOUT ANY
	13	WARRANTY; without even the implied warranty of MERCHANTABILITY or
	14	FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	15	for more details.
	16
168a2f77 DD	17	Under Section 7 of GPL version 3, you are granted additional
	18	permissions described in the GCC Runtime Library Exception, version
	19	3.1, as published by the Free Software Foundation.
	20
	21	You should have received a copy of the GNU General Public License and
	22	a copy of the GCC Runtime Library Exception along with this program;
	23	see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
	24	<http://www.gnu.org/licenses/>. */
f5bc1778 DJ	25
	26	/* ------------------------------------------------------------------ */
	27	/* Decimal Context module header */
	28	/* ------------------------------------------------------------------ */
	29	/* */
	30	/* Context variables must always have valid values: */
	31	/* */
87d32bb7	32	/* status -- [any bits may be cleared, but not set, by user] */
f5bc1778 DJ	33	/* round -- must be one of the enumerated rounding modes */
	34	/* */
	35	/* The following variables are implied for fixed size formats (i.e., */
	36	/* they are ignored) but should still be set correctly in case used */
	37	/* with decNumber functions: */
	38	/* */
	39	/* clamp -- must be either 0 or 1 */
	40	/* digits -- must be in the range 1 through 999999999 */
	41	/* emax -- must be in the range 0 through 999999999 */
	42	/* emin -- must be in the range 0 through -999999999 */
	43	/* extended -- must be either 0 or 1 [present only if DECSUBSET] */
	44	/* traps -- only defined bits may be set */
	45	/* */
	46	/* ------------------------------------------------------------------ */
	47
	48	#if !defined(DECCONTEXT)
	49	#define DECCONTEXT
	50	#define DECCNAME "decContext" /* Short name */
	51	#define DECCFULLNAME "Decimal Context Descriptor" /* Verbose name */
87d32bb7	52	#define DECCAUTHOR "Mike Cowlishaw" /* Who to blame */
f5bc1778	53
1aa34cc5	54	#include "gstdint.h" /* C99 standard integers */
f5bc1778	55	#include <stdio.h> /* for printf, etc. */
87d32bb7	56	#include <signal.h> /* for traps */
f5bc1778 DJ	57
f5bc1778 DJ	58	/* Extended flags setting -- set this to 0 to use only IEEE flags */
87d32bb7	59	#if !defined(DECEXTFLAG)
f5bc1778	60	#define DECEXTFLAG 1 /* 1=enable extended flags */
87d32bb7	61	#endif
f5bc1778 DJ	62
f5bc1778 DJ	63	/* Conditional code flag -- set this to 0 for best performance */
87d32bb7	64	#if !defined(DECSUBSET)
f5bc1778	65	#define DECSUBSET 0 /* 1=enable subset arithmetic */
87d32bb7	66	#endif
f5bc1778 DJ	67
	68	/* Context for operations, with associated constants */
	69	enum rounding {
	70	DEC_ROUND_CEILING, /* round towards +infinity */
87d32bb7	71	DEC_ROUND_UP, /* round away from 0 */
f5bc1778 DJ	72	DEC_ROUND_HALF_UP, /* 0.5 rounds up */
	73	DEC_ROUND_HALF_EVEN, /* 0.5 rounds to nearest even */
	74	DEC_ROUND_HALF_DOWN, /* 0.5 rounds down */
	75	DEC_ROUND_DOWN, /* round towards 0 (truncate) */
	76	DEC_ROUND_FLOOR, /* round towards -infinity */
87d32bb7	77	DEC_ROUND_05UP, /* round for reround */
f5bc1778 DJ	78	DEC_ROUND_MAX /* enum must be less than this */
	79	};
	80	#define DEC_ROUND_DEFAULT DEC_ROUND_HALF_EVEN;
	81
	82	typedef struct {
87d32bb7 DD	83	int32_t digits; /* working precision */
	84	int32_t emax; /* maximum positive exponent */
	85	int32_t emin; /* minimum negative exponent */
f5bc1778 DJ	86	enum rounding round; /* rounding mode */
	87	uint32_t traps; /* trap-enabler flags */
	88	uint32_t status; /* status flags */
	89	uint8_t clamp; /* flag: apply IEEE exponent clamp */
	90	#if DECSUBSET
	91	uint8_t extended; /* flag: special-values allowed */
	92	#endif
	93	} decContext;
	94
	95	/* Maxima and Minima for context settings */
	96	#define DEC_MAX_DIGITS 999999999
	97	#define DEC_MIN_DIGITS 1
	98	#define DEC_MAX_EMAX 999999999
	99	#define DEC_MIN_EMAX 0
	100	#define DEC_MAX_EMIN 0
	101	#define DEC_MIN_EMIN -999999999
	102	#define DEC_MAX_MATH 999999 /* max emax, etc., for math funcs. */
	103
87d32bb7 DD	104	/* Classifications for decimal numbers, aligned with 754 (note that */
	105	/* 'normal' and 'subnormal' are meaningful only with a decContext */
	106	/* or a fixed size format). */
f5bc1778 DJ	107	enum decClass {
	108	DEC_CLASS_SNAN,
	109	DEC_CLASS_QNAN,
	110	DEC_CLASS_NEG_INF,
	111	DEC_CLASS_NEG_NORMAL,
	112	DEC_CLASS_NEG_SUBNORMAL,
	113	DEC_CLASS_NEG_ZERO,
	114	DEC_CLASS_POS_ZERO,
	115	DEC_CLASS_POS_SUBNORMAL,
	116	DEC_CLASS_POS_NORMAL,
	117	DEC_CLASS_POS_INF
	118	};
	119	/* Strings for the decClasses */
	120	#define DEC_ClassString_SN "sNaN"
	121	#define DEC_ClassString_QN "NaN"
	122	#define DEC_ClassString_NI "-Infinity"
	123	#define DEC_ClassString_NN "-Normal"
	124	#define DEC_ClassString_NS "-Subnormal"
	125	#define DEC_ClassString_NZ "-Zero"
	126	#define DEC_ClassString_PZ "+Zero"
	127	#define DEC_ClassString_PS "+Subnormal"
	128	#define DEC_ClassString_PN "+Normal"
	129	#define DEC_ClassString_PI "+Infinity"
	130	#define DEC_ClassString_UN "Invalid"
	131
	132	/* Trap-enabler and Status flags (exceptional conditions), and */
	133	/* their names. The top byte is reserved for internal use */
	134	#if DECEXTFLAG
	135	/* Extended flags */
	136	#define DEC_Conversion_syntax 0x00000001
	137	#define DEC_Division_by_zero 0x00000002
	138	#define DEC_Division_impossible 0x00000004
	139	#define DEC_Division_undefined 0x00000008
	140	#define DEC_Insufficient_storage 0x00000010 /* [when malloc fails] */
87d32bb7 DD	141	#define DEC_Inexact 0x00000020
87d32bb7 DD	142	#define DEC_Invalid_context 0x00000040
f5bc1778 DJ	143	#define DEC_Invalid_operation 0x00000080
	144	#if DECSUBSET
	145	#define DEC_Lost_digits 0x00000100
	146	#endif
	147	#define DEC_Overflow 0x00000200
87d32bb7 DD	148	#define DEC_Clamped 0x00000400
87d32bb7 DD	149	#define DEC_Rounded 0x00000800
f5bc1778 DJ	150	#define DEC_Subnormal 0x00001000
	151	#define DEC_Underflow 0x00002000
	152	#else
	153	/* IEEE flags only */
	154	#define DEC_Conversion_syntax 0x00000010
	155	#define DEC_Division_by_zero 0x00000002
	156	#define DEC_Division_impossible 0x00000010
	157	#define DEC_Division_undefined 0x00000010
	158	#define DEC_Insufficient_storage 0x00000010 /* [when malloc fails] */
87d32bb7 DD	159	#define DEC_Inexact 0x00000001
87d32bb7 DD	160	#define DEC_Invalid_context 0x00000010
f5bc1778 DJ	161	#define DEC_Invalid_operation 0x00000010
	162	#if DECSUBSET
	163	#define DEC_Lost_digits 0x00000000
	164	#endif
	165	#define DEC_Overflow 0x00000008
87d32bb7 DD	166	#define DEC_Clamped 0x00000000
87d32bb7 DD	167	#define DEC_Rounded 0x00000000
f5bc1778 DJ	168	#define DEC_Subnormal 0x00000000
	169	#define DEC_Underflow 0x00000004
	170	#endif
	171
87d32bb7	172	/* IEEE 754 groupings for the flags */
f5bc1778	173	/* [DEC_Clamped, DEC_Lost_digits, DEC_Rounded, and DEC_Subnormal */
87d32bb7 DD	174	/* are not in IEEE 754] */
87d32bb7 DD	175	#define DEC_IEEE_754_Division_by_zero (DEC_Division_by_zero)
f5bc1778	176	#if DECSUBSET
87d32bb7	177	#define DEC_IEEE_754_Inexact (DEC_Inexact \| DEC_Lost_digits)
f5bc1778	178	#else
87d32bb7	179	#define DEC_IEEE_754_Inexact (DEC_Inexact)
f5bc1778	180	#endif
87d32bb7	181	#define DEC_IEEE_754_Invalid_operation (DEC_Conversion_syntax \| \
f5bc1778 DJ	182	DEC_Division_impossible \| \
	183	DEC_Division_undefined \| \
	184	DEC_Insufficient_storage \| \
87d32bb7	185	DEC_Invalid_context \| \
f5bc1778	186	DEC_Invalid_operation)
87d32bb7 DD	187	#define DEC_IEEE_754_Overflow (DEC_Overflow)
87d32bb7 DD	188	#define DEC_IEEE_754_Underflow (DEC_Underflow)
f5bc1778 DJ	189
f5bc1778 DJ	190	/* flags which are normally errors (result is qNaN, infinite, or 0) */
87d32bb7 DD	191	#define DEC_Errors (DEC_IEEE_754_Division_by_zero \| \
	192	DEC_IEEE_754_Invalid_operation \| \
	193	DEC_IEEE_754_Overflow \| DEC_IEEE_754_Underflow)
f5bc1778	194	/* flags which cause a result to become qNaN */
87d32bb7	195	#define DEC_NaNs DEC_IEEE_754_Invalid_operation
f5bc1778 DJ	196
	197	/* flags which are normally for information only (finite results) */
	198	#if DECSUBSET
	199	#define DEC_Information (DEC_Clamped \| DEC_Rounded \| DEC_Inexact \
	200	\| DEC_Lost_digits)
	201	#else
	202	#define DEC_Information (DEC_Clamped \| DEC_Rounded \| DEC_Inexact)
	203	#endif
	204
87d32bb7 DD	205	/* IEEE 854 names (for compatibility with older decNumber versions) */
	206	#define DEC_IEEE_854_Division_by_zero DEC_IEEE_754_Division_by_zero
	207	#define DEC_IEEE_854_Inexact DEC_IEEE_754_Inexact
	208	#define DEC_IEEE_854_Invalid_operation DEC_IEEE_754_Invalid_operation
	209	#define DEC_IEEE_854_Overflow DEC_IEEE_754_Overflow
	210	#define DEC_IEEE_854_Underflow DEC_IEEE_754_Underflow
	211
f5bc1778 DJ	212	/* Name strings for the exceptional conditions */
	213	#define DEC_Condition_CS "Conversion syntax"
	214	#define DEC_Condition_DZ "Division by zero"
	215	#define DEC_Condition_DI "Division impossible"
	216	#define DEC_Condition_DU "Division undefined"
	217	#define DEC_Condition_IE "Inexact"
	218	#define DEC_Condition_IS "Insufficient storage"
	219	#define DEC_Condition_IC "Invalid context"
	220	#define DEC_Condition_IO "Invalid operation"
	221	#if DECSUBSET
	222	#define DEC_Condition_LD "Lost digits"
	223	#endif
	224	#define DEC_Condition_OV "Overflow"
	225	#define DEC_Condition_PA "Clamped"
	226	#define DEC_Condition_RO "Rounded"
	227	#define DEC_Condition_SU "Subnormal"
	228	#define DEC_Condition_UN "Underflow"
	229	#define DEC_Condition_ZE "No status"
	230	#define DEC_Condition_MU "Multiple status"
	231	#define DEC_Condition_Length 21 /* length of the longest string, */
	232	/* including terminator */
	233
	234	/* Initialization descriptors, used by decContextDefault */
87d32bb7	235	#define DEC_INIT_BASE 0
f5bc1778 DJ	236	#define DEC_INIT_DECIMAL32 32
	237	#define DEC_INIT_DECIMAL64 64
	238	#define DEC_INIT_DECIMAL128 128
	239	/* Synonyms */
	240	#define DEC_INIT_DECSINGLE DEC_INIT_DECIMAL32
	241	#define DEC_INIT_DECDOUBLE DEC_INIT_DECIMAL64
	242	#define DEC_INIT_DECQUAD DEC_INIT_DECIMAL128
	243
	244	/* decContext routines */
	245
	246	#include "decContextSymbols.h"
	247
52d6785f DD	248	#ifdef __cplusplus
	249	extern "C" {
	250	#endif
	251
f5bc1778 DJ	252	extern decContext * decContextClearStatus(decContext *, uint32_t);
	253	extern decContext * decContextDefault(decContext *, int32_t);
	254	extern enum rounding decContextGetRounding(decContext *);
	255	extern uint32_t decContextGetStatus(decContext *);
	256	extern decContext * decContextRestoreStatus(decContext *, uint32_t, uint32_t);
	257	extern uint32_t decContextSaveStatus(decContext *, uint32_t);
	258	extern decContext * decContextSetRounding(decContext *, enum rounding);
	259	extern decContext * decContextSetStatus(decContext *, uint32_t);
	260	extern decContext * decContextSetStatusFromString(decContext , const char );
	261	extern decContext * decContextSetStatusFromStringQuiet(decContext , const char );
	262	extern decContext * decContextSetStatusQuiet(decContext *, uint32_t);
	263	extern const char * decContextStatusToString(const decContext *);
87d32bb7	264	extern int32_t decContextTestEndian(uint8_t);
f5bc1778 DJ	265	extern uint32_t decContextTestSavedStatus(uint32_t, uint32_t);
	266	extern uint32_t decContextTestStatus(decContext *, uint32_t);
	267	extern decContext * decContextZeroStatus(decContext *);
	268
52d6785f DD	269	#ifdef __cplusplus
	270	}
	271	#endif
	272
f5bc1778	273	#endif