gdtoa.h revision 219557 
1836Sattila/****************************************************************
2836Sattila
3836SattilaThe author of this software is David M. Gay.
4877Sattila
5836SattilaCopyright (C) 1998 by Lucent Technologies
6836SattilaAll Rights Reserved
7836Sattila
8877SattilaPermission to use, copy, modify, and distribute this software and
9836Sattilaits documentation for any purpose and without fee is hereby
10836Sattilagranted, provided that the above copyright notice appear in all
11836Sattilacopies and that both that the copyright notice and this
12836Sattilapermission notice and warranty disclaimer appear in supporting
13836Sattiladocumentation, and that the name of Lucent or any of its entities
14877Sattilanot be used in advertising or publicity pertaining to
15836Sattiladistribution of the software without specific, written prior
16836Sattilapermission.
17836Sattila
18877SattilaLUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19836SattilaINCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
20836SattilaIN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
21836SattilaSPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
22836SattilaWHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
23836SattilaIN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
24836SattilaARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
25836SattilaTHIS SOFTWARE.
26836Sattila
27836Sattila****************************************************************/
28836Sattila
29836Sattila/* Please send bug reports to David M. Gay (dmg at acm dot org,
30836Sattila * with " at " changed at "@" and " dot " changed to ".").	*/
31836Sattila
32836Sattila#ifndef GDTOA_H_INCLUDED
33836Sattila#define GDTOA_H_INCLUDED
34836Sattila
35836Sattila#include "arith.h"
36836Sattila#include <stddef.h> /* for size_t */
37836Sattila
38836Sattila#ifndef Long
39836Sattila#define Long int
40836Sattila#endif
41836Sattila#ifndef ULong
42836Sattilatypedef unsigned Long ULong;
43836Sattila#endif
44836Sattila#ifndef UShort
45836Sattilatypedef unsigned short UShort;
46836Sattila#endif
47836Sattila
48836Sattila#ifndef ANSI
49836Sattila#ifdef KR_headers
50836Sattila#define ANSI(x) ()
51836Sattila#define Void /*nothing*/
52836Sattila#else
53836Sattila#define ANSI(x) x
54836Sattila#define Void void
55836Sattila#endif
56836Sattila#endif /* ANSI */
57836Sattila
58836Sattila#ifndef CONST
59836Sattila#ifdef KR_headers
60836Sattila#define CONST /* blank */
61836Sattila#else
62836Sattila#define CONST const
63836Sattila#endif
64836Sattila#endif /* CONST */
65836Sattila
66836Sattila enum {	/* return values from strtodg */
67836Sattila	STRTOG_Zero	= 0,
68836Sattila	STRTOG_Normal	= 1,
69836Sattila	STRTOG_Denormal	= 2,
70836Sattila	STRTOG_Infinite	= 3,
71836Sattila	STRTOG_NaN	= 4,
72836Sattila	STRTOG_NaNbits	= 5,
73836Sattila	STRTOG_NoNumber	= 6,
74836Sattila	STRTOG_Retmask	= 7,
75836Sattila
76836Sattila	/* The following may be or-ed into one of the above values. */
77836Sattila
78836Sattila	STRTOG_Neg	= 0x08, /* does not affect STRTOG_Inexlo or STRTOG_Inexhi */
79836Sattila	STRTOG_Inexlo	= 0x10,	/* returned result rounded toward zero */
80836Sattila	STRTOG_Inexhi	= 0x20, /* returned result rounded away from zero */
81836Sattila	STRTOG_Inexact	= 0x30,
82836Sattila	STRTOG_Underflow= 0x40,
83836Sattila	STRTOG_Overflow	= 0x80
84836Sattila	};
85836Sattila
86836Sattila typedef struct
87836SattilaFPI {
88836Sattila	int nbits;
89836Sattila	int emin;
90836Sattila	int emax;
91836Sattila	int rounding;
92836Sattila	int sudden_underflow;
93836Sattila	} FPI;
94836Sattila
95836Sattilaenum {	/* FPI.rounding values: same as FLT_ROUNDS */
96836Sattila	FPI_Round_zero = 0,
97836Sattila	FPI_Round_near = 1,
98836Sattila	FPI_Round_up = 2,
99836Sattila	FPI_Round_down = 3
100836Sattila	};
101
102#ifdef __cplusplus
103extern "C" {
104#endif
105
106extern char* dtoa  ANSI((double d, int mode, int ndigits, int *decpt,
107			int *sign, char **rve));
108extern char* gdtoa ANSI((FPI *fpi, int be, ULong *bits, int *kindp,
109			int mode, int ndigits, int *decpt, char **rve));
110extern void freedtoa ANSI((char*));
111extern float  strtof ANSI((CONST char *, char **));
112extern double strtod ANSI((CONST char *, char **));
113extern int strtodg ANSI((CONST char*, char**, FPI*, Long*, ULong*));
114
115extern char*	g_ddfmt  ANSI((char*, double*, int, size_t));
116extern char*	g_dfmt   ANSI((char*, double*, int, size_t));
117extern char*	g_ffmt   ANSI((char*, float*,  int, size_t));
118extern char*	g_Qfmt   ANSI((char*, void*,   int, size_t));
119extern char*	g_xfmt   ANSI((char*, void*,   int, size_t));
120extern char*	g_xLfmt  ANSI((char*, void*,   int, size_t));
121
122extern int	strtoId  ANSI((CONST char*, char**, double*, double*));
123extern int	strtoIdd ANSI((CONST char*, char**, double*, double*));
124extern int	strtoIf  ANSI((CONST char*, char**, float*, float*));
125extern int	strtoIQ  ANSI((CONST char*, char**, void*, void*));
126extern int	strtoIx  ANSI((CONST char*, char**, void*, void*));
127extern int	strtoIxL ANSI((CONST char*, char**, void*, void*));
128extern int	strtord  ANSI((CONST char*, char**, int, double*));
129extern int	strtordd ANSI((CONST char*, char**, int, double*));
130extern int	strtorf  ANSI((CONST char*, char**, int, float*));
131extern int	strtorQ  ANSI((CONST char*, char**, int, void*));
132extern int	strtorx  ANSI((CONST char*, char**, int, void*));
133extern int	strtorxL ANSI((CONST char*, char**, int, void*));
134#if 1
135extern int	strtodI  ANSI((CONST char*, char**, double*));
136extern int	strtopd  ANSI((CONST char*, char**, double*));
137extern int	strtopdd ANSI((CONST char*, char**, double*));
138extern int	strtopf  ANSI((CONST char*, char**, float*));
139extern int	strtopQ  ANSI((CONST char*, char**, void*));
140extern int	strtopx  ANSI((CONST char*, char**, void*));
141extern int	strtopxL ANSI((CONST char*, char**, void*));
142#else
143#define strtopd(s,se,x) strtord(s,se,1,x)
144#define strtopdd(s,se,x) strtordd(s,se,1,x)
145#define strtopf(s,se,x) strtorf(s,se,1,x)
146#define strtopQ(s,se,x) strtorQ(s,se,1,x)
147#define strtopx(s,se,x) strtorx(s,se,1,x)
148#define strtopxL(s,se,x) strtorxL(s,se,1,x)
149#endif
150
151#ifdef __cplusplus
152}
153#endif
154#endif /* GDTOA_H_INCLUDED */
155