newlib/libc/stdlib/gdtoa.h

   1 /****************************************************************
   2
   3 The author of this software is David M. Gay.
   4
   5 Copyright (C) 1998 by Lucent Technologies
   6 All Rights Reserved
   7
   8 Permission to use, copy, modify, and distribute this software and
   9 its documentation for any purpose and without fee is hereby
  10 granted, provided that the above copyright notice appear in all
  11 copies and that both that the copyright notice and this
  12 permission notice and warranty disclaimer appear in supporting
  13 documentation, and that the name of Lucent or any of its entities
  14 not be used in advertising or publicity pertaining to
  15 distribution of the software without specific, written prior
  16 permission.
  17
  18 LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  19 INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
  20 IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
  21 SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  22 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
  23 IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
  24 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
  25 THIS SOFTWARE.
  26
  27 ****************************************************************/
  28
  29 /* Please send bug reports to David M. Gay (dmg at acm dot org,
  30  * with " at " changed at "@" and " dot " changed to ".").      */
  31
  32 #ifndef GDTOA_H_INCLUDED
  33 #define GDTOA_H_INCLUDED
  34
  35 #include <stddef.h> /* for size_t */
  36 #include <reent.h>
  37
  38 #define PROTO_NORMAL(x)
  39 #define __BEGIN_HIDDEN_DECLS
  40 #define __END_HIDDEN_DECLS
  41 #define DEF_STRONG(x)
  42
  43 #ifndef ULong
  44 #define ULong __ULong
  45 #endif
  46
  47 #ifndef ANSI
  48 #ifdef KR_headers
  49 #define ANSI(x) ()
  50 #define Void /*nothing*/
  51 #else
  52 #define ANSI(x) x
  53 #define Void void
  54 #endif
  55 #endif /* ANSI */
  56
  57 #ifndef CONST
  58 #ifdef KR_headers
  59 #define CONST /* blank */
  60 #else
  61 #define CONST const
  62 #endif
  63 #endif /* CONST */
  64
  65  enum { /* return values from strtodg */
  66         STRTOG_Zero     = 0x000,
  67         STRTOG_Normal   = 0x001,
  68         STRTOG_Denormal = 0x002,
  69         STRTOG_Infinite = 0x003,
  70         STRTOG_NaN      = 0x004,
  71         STRTOG_NaNbits  = 0x005,
  72         STRTOG_NoNumber = 0x006,
  73         STRTOG_NoMemory = 0x007,
  74         STRTOG_Retmask  = 0x00f,
  75
  76         /* The following may be or-ed into one of the above values. */
  77
  78         STRTOG_Inexlo   = 0x010, /* returned result rounded toward zero */
  79         STRTOG_Inexhi   = 0x020, /* returned result rounded away from zero */
  80         STRTOG_Inexact  = 0x030,
  81         STRTOG_Underflow= 0x040,
  82         STRTOG_Overflow = 0x080,
  83         STRTOG_Neg      = 0x100 /* does not affect STRTOG_Inexlo or STRTOG_Inexhi */
  84         };
  85
  86  typedef struct
  87 FPI {
  88         int nbits;
  89         int emin;
  90         int emax;
  91         int rounding;
  92         int sudden_underflow;
  93         } FPI;
  94
  95 enum {  /* FPI.rounding values: same as FLT_ROUNDS */
  96         FPI_Round_zero = 0,
  97         FPI_Round_near = 1,
  98         FPI_Round_up = 2,
  99         FPI_Round_down = 3
 100         };
 101
 102 typedef unsigned short __UShort;
 103 typedef struct _Bigint Bigint;
 104
 105 #ifdef __cplusplus
 106 extern "C" {
 107 #endif
 108
 109 extern char* __dtoa  ANSI((struct _reent *ptr,
 110                         double d, int mode, int ndigits, int *decpt,
 111                         int *sign, char **rve));
 112 extern char* __gdtoa ANSI((struct _reent *ptr,
 113                         FPI *fpi, int be, ULong *bits, int *kindp,
 114                         int mode, int ndigits, int *decpt, char **rve));
 115 extern void __freedtoa ANSI((struct _reent *, char*));
 116 extern float  strtof ANSI((CONST char *, char **));
 117 extern double strtod ANSI((CONST char *, char **));
 118 extern int __strtodg ANSI((CONST char*, char**, FPI*, Long*, ULong*));
 119 char    *__hdtoa(double, const char *, int, int *, int *, char **);
 120 char    *__hldtoa(long double, const char *, int, int *, int *, char **);
 121 char    *__ldtoa(struct _reent *ptr,
 122                  long double *, int, int, int *, int *, char **);
 123
 124 PROTO_NORMAL(__dtoa);
 125 PROTO_NORMAL(__gdtoa);
 126 PROTO_NORMAL(__freedtoa);
 127 PROTO_NORMAL(__hdtoa);
 128 PROTO_NORMAL(__hldtoa);
 129 PROTO_NORMAL(__ldtoa);
 130
 131 __BEGIN_HIDDEN_DECLS
 132 extern char*    __g_ddfmt  ANSI((char*, double*, int, size_t));
 133 extern char*    __g_dfmt   ANSI((char*, double*, int, size_t));
 134 extern char*    __g_ffmt   ANSI((char*, float*,  int, size_t));
 135 extern char*    __g_Qfmt   ANSI((char*, void*,   int, size_t));
 136 extern char*    __g_xfmt   ANSI((char*, void*,   int, size_t));
 137 extern char*    __g_xLfmt  ANSI((char*, void*,   int, size_t));
 138
 139 extern int      __strtoId  ANSI((CONST char*, char**, double*, double*));
 140 extern int      __strtoIdd ANSI((CONST char*, char**, double*, double*));
 141 extern int      __strtoIf  ANSI((CONST char*, char**, float*, float*));
 142 extern int      __strtoIQ  ANSI((CONST char*, char**, void*, void*));
 143 extern int      __strtoIx  ANSI((CONST char*, char**, void*, void*));
 144 extern int      __strtoIxL ANSI((CONST char*, char**, void*, void*));
 145 extern int      __strtord  ANSI((CONST char*, char**, int, double*));
 146 extern int      __strtordd ANSI((CONST char*, char**, int, double*));
 147 extern int      __strtorf  ANSI((CONST char*, char**, int, float*));
 148 extern int      __strtorQ  ANSI((CONST char*, char**, int, void*));
 149 extern int      __strtorx  ANSI((CONST char*, char**, int, void*));
 150 extern int      __strtorxL ANSI((CONST char*, char**, int, void*));
 151 #if 1
 152 extern int      __strtodI  ANSI((CONST char*, char**, double*));
 153 extern int      __strtopd  ANSI((CONST char*, char**, double*));
 154 extern int      __strtopdd ANSI((CONST char*, char**, double*));
 155 extern int      __strtopf  ANSI((CONST char*, char**, float*));
 156 extern int      __strtopQ  ANSI((CONST char*, char**, void*));
 157 extern int      __strtopx  ANSI((CONST char*, char**, void*));
 158 extern int      __strtopxL ANSI((CONST char*, char**, void*));
 159 #else
 160 #define __strtopd(s,se,x) strtord(s,se,1,x)
 161 #define __strtopdd(s,se,x) strtordd(s,se,1,x)
 162 #define __strtopf(s,se,x) strtorf(s,se,1,x)
 163 #define __strtopQ(s,se,x) strtorQ(s,se,1,x)
 164 #define __strtopx(s,se,x) strtorx(s,se,1,x)
 165 #define __strtopxL(s,se,x) strtorxL(s,se,1,x)
 166 #endif
 167 __END_HIDDEN_DECLS
 168
 169 #ifdef __cplusplus
 170 }
 171 #endif
 172 #endif /* GDTOA_H_INCLUDED */