98 lines
1.8 KiB
C
98 lines
1.8 KiB
C
|
//----------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// float10.h
|
||
|
|
//
|
||
|
|
// Copyright (C) Microsoft Corporation, 1997.
|
||
|
|
//
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
|
||
|
|
#ifndef _FLOAT10_H_
|
||
|
|
#define _FLOAT10_H_
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
double x;
|
||
|
|
} UDOUBLE;
|
||
|
|
|
||
|
|
|
||
|
|
#pragma pack(4)
|
||
|
|
typedef UCHAR u_char;
|
||
|
|
typedef struct {
|
||
|
|
u_char ld[10];
|
||
|
|
} _ULDOUBLE;
|
||
|
|
#pragma pack()
|
||
|
|
|
||
|
|
#pragma pack(4)
|
||
|
|
typedef struct {
|
||
|
|
u_char ld12[12];
|
||
|
|
} _ULDBL12;
|
||
|
|
#pragma pack()
|
||
|
|
|
||
|
|
#define MAX_MAN_DIGITS 21
|
||
|
|
|
||
|
|
#define MAX_10_LEN 30 //max length of string including NULL
|
||
|
|
|
||
|
|
// specifies '%f' format
|
||
|
|
|
||
|
|
#define SO_FFORMAT 1
|
||
|
|
|
||
|
|
typedef struct _FloatOutStruct {
|
||
|
|
short exp;
|
||
|
|
char sign;
|
||
|
|
char ManLen;
|
||
|
|
char man[MAX_MAN_DIGITS+1];
|
||
|
|
} FOS;
|
||
|
|
|
||
|
|
char * _uldtoa (_ULDOUBLE *px, int maxchars, char *ldtext);
|
||
|
|
|
||
|
|
int $I10_OUTPUT(_ULDOUBLE ld, int ndigits,
|
||
|
|
unsigned output_flags, FOS *fos);
|
||
|
|
|
||
|
|
//
|
||
|
|
// return values for strgtold12 routine
|
||
|
|
//
|
||
|
|
|
||
|
|
#define SLD_UNDERFLOW 1
|
||
|
|
#define SLD_OVERFLOW 2
|
||
|
|
#define SLD_NODIGITS 4
|
||
|
|
|
||
|
|
//
|
||
|
|
// return values for internal conversion routines
|
||
|
|
// (12-byte to long double, double, or float)
|
||
|
|
//
|
||
|
|
|
||
|
|
typedef enum {
|
||
|
|
INTRNCVT_OK,
|
||
|
|
INTRNCVT_OVERFLOW,
|
||
|
|
INTRNCVT_UNDERFLOW
|
||
|
|
} INTRNCVT_STATUS;
|
||
|
|
|
||
|
|
unsigned int
|
||
|
|
__strgtold12(_ULDBL12 *pld12,
|
||
|
|
char * *p_end_ptr,
|
||
|
|
char *str,
|
||
|
|
int mult12);
|
||
|
|
|
||
|
|
INTRNCVT_STATUS _ld12tod(_ULDBL12 *pld12, UDOUBLE *d);
|
||
|
|
void _ld12told(_ULDBL12 *pld12, _ULDOUBLE *pld);
|
||
|
|
|
||
|
|
void _atodbl(UDOUBLE *d, char *str);
|
||
|
|
void _atoldbl(_ULDOUBLE *ld, char *str);
|
||
|
|
|
||
|
|
//
|
||
|
|
// Simple FLOAT86 utilities
|
||
|
|
//
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
ULONG64 significand : 64;
|
||
|
|
UINT exponent : 17;
|
||
|
|
UINT sign : 1;
|
||
|
|
} FLOAT82_FORMAT;
|
||
|
|
|
||
|
|
double
|
||
|
|
Float82ToDouble(const FLOAT128* FpReg82);
|
||
|
|
|
||
|
|
void
|
||
|
|
DoubleToFloat82(double f, FLOAT128* FpReg82);
|
||
|
|
|
||
|
|
#endif // #ifndef _FLOAT10_H_
|