/* $NetBSD: gdtoa.h,v 1.11 2019/08/01 02:27:43 riastradh Exp $ */

/****************************************************************

The author of this software is David M. Gay.

Copyright (C) 1998 by Lucent Technologies
All Rights Reserved

Permission to use, copy, modify, and distribute this software and
its documentation for any purpose and without fee is hereby
granted, provided that the above copyright notice appear in all
copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the name of Lucent or any of its entities
not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.

LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
THIS SOFTWARE.

****************************************************************/

/* Please send bug reports to David M. Gay (dmg at acm dot org,
 * with " at " changed at "@" and " dot " changed to ".").	*/

#ifndef GDTOA_H_INCLUDED
#define GDTOA_H_INCLUDED

#include "arith.h"
#include <stddef.h> /* for size_t */
#include <stdint.h>

#ifndef __LOCALE_T_DECLARED
typedef struct _locale *locale_t;
#define __LOCALE_T_DECLARED
#endif

#ifndef Long
#define Long int32_t
#endif
#ifndef ULong
#define ULong uint32_t
#endif
#ifndef UShort
#define UShort uint16_t
#endif

#ifndef ANSI
#ifdef KR_headers
#define ANSI(x) ()
#define Void /*nothing*/
#else
#define ANSI(x) x
#define Void void
#endif
#endif /* ANSI */

#ifndef CONST
#ifdef KR_headers
#define CONST /* blank */
#else
#define CONST const
#endif
#endif /* CONST */

enum { /* return values from strtodg */
       STRTOG_Zero = 0,
       STRTOG_Normal = 1,
       STRTOG_Denormal = 2,
       STRTOG_Infinite = 3,
       STRTOG_NaN = 4,
       STRTOG_NaNbits = 5,
       STRTOG_NoNumber = 6,
       STRTOG_Retmask = 7,

       /* The following may be or-ed into one of the above values. */

       STRTOG_Neg = 0x08, /* does not affect STRTOG_Inexlo or STRTOG_Inexhi */
       STRTOG_Inexlo = 0x10, /* returned result rounded toward zero */
       STRTOG_Inexhi = 0x20, /* returned result rounded away from zero */
       STRTOG_Inexact = 0x30,
       STRTOG_Underflow = 0x40,
       STRTOG_Overflow = 0x80,
       STRTOG_NoMemory = 0x100
};

typedef struct FPI {
  int nbits;
  int emin;
  int emax;
  int rounding;
  int sudden_underflow;
} FPI;

enum { /* FPI.rounding values: same as FLT_ROUNDS */
       FPI_Round_zero = 0,
       FPI_Round_near = 1,
       FPI_Round_up = 2,
       FPI_Round_down = 3
};

#ifdef __cplusplus
extern "C" {
#endif

#define dtoa __dtoa
#define gdtoa __gdtoa
#define ldtoa __ldtoa
#define hldtoa __hldtoa
#define hdtoa __hdtoa
#define freedtoa __freedtoa
#define strtodg __strtodg_D2A
#define strtopQ __strtopQ_D2A
#define strtopx __strtopx_D2A
#define strtopxL __strtopxL_D2A
#define strtord __strtord_D2A

extern char *dtoa ANSI((double d, int mode, int ndigits, int *decpt, int *sign,
                        char **rve));
extern char *hdtoa ANSI((double d, const char *xdigs, int ndigits, int *decpt,
                         int *sign, char **rve));
extern char *ldtoa ANSI((long double *ld, int mode, int ndigits, int *decpt,
                         int *sign, char **rve));
extern char *hldtoa ANSI((long double e, const char *xdigs, int ndigits,
                          int *decpt, int *sign, char **rve));

extern char *gdtoa ANSI((CONST FPI * fpi, int be, ULong *bits, int *kindp,
                         int mode, int ndigits, int *decpt, char **rve));
extern void freedtoa ANSI((char *));
extern float strtof ANSI((CONST char *, char **));
extern double strtod ANSI((CONST char *, char **));
extern int strtodg ANSI((CONST char *, char **, CONST FPI *, Long *, ULong *,
                         locale_t));

extern char *g_ddfmt ANSI((char *, double *, int, size_t));
extern char *g_dfmt ANSI((char *, double *, int, size_t));
extern char *g_ffmt ANSI((char *, float *, int, size_t));
extern char *g_Qfmt ANSI((char *, void *, int, size_t));
extern char *g_xfmt ANSI((char *, void *, int, size_t));
extern char *g_xLfmt ANSI((char *, void *, int, size_t));

extern int strtoId ANSI((CONST char *, char **, double *, double *));
extern int strtoIdd ANSI((CONST char *, char **, double *, double *));
extern int strtoIf ANSI((CONST char *, char **, float *, float *));
extern int strtoIQ ANSI((CONST char *, char **, void *, void *));
extern int strtoIx ANSI((CONST char *, char **, void *, void *));
extern int strtoIxL ANSI((CONST char *, char **, void *, void *));
extern int strtord ANSI((CONST char *, char **, int, double *, locale_t));
extern int strtordd ANSI((CONST char *, char **, int, double *));
extern int strtorf ANSI((CONST char *, char **, int, float *));
extern int strtorQ ANSI((CONST char *, char **, int, void *));
extern int strtorx ANSI((CONST char *, char **, int, void *));
extern int strtorxL ANSI((CONST char *, char **, int, void *));
#if 1
extern int strtodI ANSI((CONST char *, char **, double *));
extern int strtopd ANSI((CONST char *, char **, double *));
extern int strtopdd ANSI((CONST char *, char **, double *));
extern int strtopf ANSI((CONST char *, char **, float *));
extern int strtopQ ANSI((CONST char *, char **, void *, locale_t));
extern int strtopx ANSI((CONST char *, char **, void *, locale_t));
extern int strtopxL ANSI((CONST char *, char **, void *, locale_t));
#else
#define strtopd(s, se, x) strtord(s, se, 1, x)
#define strtopdd(s, se, x) strtordd(s, se, 1, x)
#define strtopf(s, se, x) strtorf(s, se, 1, x)
#define strtopQ(s, se, x) strtorQ(s, se, 1, x)
#define strtopx(s, se, x) strtorx(s, se, 1, x)
#define strtopxL(s, se, x) strtorxL(s, se, 1, x)
#endif

#ifdef __cplusplus
}
#endif
#endif /* GDTOA_H_INCLUDED */
