lib/libc/gdtoa/gdtoa.h

   1 /* $NetBSD: gdtoa.h,v 1.10 2013/04/18 21:54:10 joerg Exp $ */
   2
   3 /****************************************************************
   4
   5 The author of this software is David M. Gay.
   6
   7 Copyright (C) 1998 by Lucent Technologies
   8 All Rights Reserved
   9
  10 Permission to use, copy, modify, and distribute this software and
  11 its documentation for any purpose and without fee is hereby
  12 granted, provided that the above copyright notice appear in all
  13 copies and that both that the copyright notice and this
  14 permission notice and warranty disclaimer appear in supporting
  15 documentation, and that the name of Lucent or any of its entities
  16 not be used in advertising or publicity pertaining to
  17 distribution of the software without specific, written prior
  18 permission.
  19
  20 LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  21 INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
  22 IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
  23 SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  24 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
  25 IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
  26 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
  27 THIS SOFTWARE.
  28
  29 ****************************************************************/
  30
  31 /* Please send bug reports to David M. Gay (dmg at acm dot org,
  32  * with " at " changed at "@" and " dot " changed to ".").      */
  33
  34 #ifndef GDTOA_H_INCLUDED
  35 #define GDTOA_H_INCLUDED
  36
  37 #include "arith.h"
  38 #include <stddef.h> /* for size_t */
  39 #include <stdint.h>
  40
  41 #ifndef __LOCALE_T_DECLARED
  42 typedef struct _locale          *locale_t;
  43 #define __LOCALE_T_DECLARED
  44 #endif
  45
  46 #ifndef Long
  47 #define Long int32_t
  48 #endif
  49 #ifndef ULong
  50 #define ULong uint32_t
  51 #endif
  52 #ifndef UShort
  53 #define UShort uint16_t
  54 #endif
  55
  56 #ifndef ANSI
  57 #ifdef KR_headers
  58 #define ANSI(x) ()
  59 #define Void /*nothing*/
  60 #else
  61 #define ANSI(x) x
  62 #define Void void
  63 #endif
  64 #endif /* ANSI */
  65
  66 #ifndef CONST
  67 #ifdef KR_headers
  68 #define CONST /* blank */
  69 #else
  70 #define CONST const
  71 #endif
  72 #endif /* CONST */
  73
  74  enum { /* return values from strtodg */
  75         STRTOG_Zero     = 0,
  76         STRTOG_Normal   = 1,
  77         STRTOG_Denormal = 2,
  78         STRTOG_Infinite = 3,
  79         STRTOG_NaN      = 4,
  80         STRTOG_NaNbits  = 5,
  81         STRTOG_NoNumber = 6,
  82         STRTOG_Retmask  = 7,
  83
  84         /* The following may be or-ed into one of the above values. */
  85
  86         STRTOG_Neg      = 0x08, /* does not affect STRTOG_Inexlo or STRTOG_Inexhi */
  87         STRTOG_Inexlo   = 0x10, /* returned result rounded toward zero */
  88         STRTOG_Inexhi   = 0x20, /* returned result rounded away from zero */
  89         STRTOG_Inexact  = 0x30,
  90         STRTOG_Underflow= 0x40,
  91         STRTOG_Overflow = 0x80,
  92         STRTOG_NoMemory = 0x100
  93         };
  94
  95  typedef struct
  96 FPI {
  97         int nbits;
  98         int emin;
  99         int emax;
 100         int rounding;
 101         int sudden_underflow;
 102         } FPI;
 103
 104 enum {  /* FPI.rounding values: same as FLT_ROUNDS */
 105         FPI_Round_zero = 0,
 106         FPI_Round_near = 1,
 107         FPI_Round_up = 2,
 108         FPI_Round_down = 3
 109         };
 110
 111 #ifdef __cplusplus
 112 extern "C" {
 113 #endif
 114
 115 #define dtoa            __dtoa
 116 #define gdtoa           __gdtoa
 117 #define ldtoa           __ldtoa
 118 #define hldtoa          __hldtoa
 119 #define hdtoa           __hdtoa
 120 #define freedtoa        __freedtoa
 121 #define strtodg         __strtodg_D2A
 122 #define strtopQ         __strtopQ_D2A
 123 #define strtopx         __strtopx_D2A
 124 #define strtopxL        __strtopxL_D2A
 125 #define strtord         __strtord_D2A
 126
 127 extern char* dtoa  ANSI((double d, int mode, int ndigits, int *decpt,
 128                         int *sign, char **rve));
 129 extern char* hdtoa ANSI((double d, const char *xdigs, int ndigits, int *decpt,
 130                         int *sign, char **rve));
 131 extern char* ldtoa ANSI((long double *ld, int mode, int ndigits, int *decpt,
 132                         int *sign, char **rve));
 133 extern char* hldtoa ANSI((long double e, const char *xdigs, int ndigits,
 134                         int *decpt, int *sign, char **rve));
 135
 136 extern char* gdtoa ANSI((FPI *fpi, int be, ULong *bits, int *kindp,
 137                         int mode, int ndigits, int *decpt, char **rve));
 138 extern void freedtoa ANSI((char*));
 139 extern float  strtof ANSI((CONST char *, char **));
 140 extern double strtod ANSI((CONST char *, char **));
 141 extern int strtodg ANSI((CONST char*, char**, CONST FPI*, Long*, ULong*,
 142                          locale_t));
 143
 144 extern char*    g_ddfmt  ANSI((char*, double*, int, size_t));
 145 extern char*    g_dfmt   ANSI((char*, double*, int, size_t));
 146 extern char*    g_ffmt   ANSI((char*, float*,  int, size_t));
 147 extern char*    g_Qfmt   ANSI((char*, void*,   int, size_t));
 148 extern char*    g_xfmt   ANSI((char*, void*,   int, size_t));
 149 extern char*    g_xLfmt  ANSI((char*, void*,   int, size_t));
 150
 151 extern int      strtoId  ANSI((CONST char*, char**, double*, double*));
 152 extern int      strtoIdd ANSI((CONST char*, char**, double*, double*));
 153 extern int      strtoIf  ANSI((CONST char*, char**, float*, float*));
 154 extern int      strtoIQ  ANSI((CONST char*, char**, void*, void*));
 155 extern int      strtoIx  ANSI((CONST char*, char**, void*, void*));
 156 extern int      strtoIxL ANSI((CONST char*, char**, void*, void*));
 157 extern int      strtord  ANSI((CONST char*, char**, int, double*, locale_t));
 158 extern int      strtordd ANSI((CONST char*, char**, int, double*));
 159 extern int      strtorf  ANSI((CONST char*, char**, int, float*));
 160 extern int      strtorQ  ANSI((CONST char*, char**, int, void*));
 161 extern int      strtorx  ANSI((CONST char*, char**, int, void*));
 162 extern int      strtorxL ANSI((CONST char*, char**, int, void*));
 163 #if 1
 164 extern int      strtodI  ANSI((CONST char*, char**, double*));
 165 extern int      strtopd  ANSI((CONST char*, char**, double*));
 166 extern int      strtopdd ANSI((CONST char*, char**, double*));
 167 extern int      strtopf  ANSI((CONST char*, char**, float*));
 168 extern int      strtopQ  ANSI((CONST char*, char**, void*, locale_t));
 169 extern int      strtopx  ANSI((CONST char*, char**, void*, locale_t));
 170 extern int      strtopxL ANSI((CONST char*, char**, void*, locale_t));
 171 #else
 172 #define strtopd(s,se,x) strtord(s,se,1,x)
 173 #define strtopdd(s,se,x) strtordd(s,se,1,x)
 174 #define strtopf(s,se,x) strtorf(s,se,1,x)
 175 #define strtopQ(s,se,x) strtorQ(s,se,1,x)
 176 #define strtopx(s,se,x) strtorx(s,se,1,x)
 177 #define strtopxL(s,se,x) strtorxL(s,se,1,x)
 178 #endif
 179
 180 #ifdef __cplusplus
 181 }
 182 #endif
 183 #endif /* GDTOA_H_INCLUDED */