fpieee.h

C标准库源代码

/***
*fpieee.h - Definitions for floating point IEEE exception handling
*
*       Copyright (c) 1991-1997, Microsoft Corporation. All rights reserved.
*
*Purpose:
*       This file contains constant and type definitions for handling
*       floating point exceptions [ANSI/IEEE std. 754]
*
*       [Public]
*
****/

#if _MSC_VER > 1000
#pragma once
#endif  /* _MSC_VER > 1000 */

#ifndef _INC_FPIEEE
#define _INC_FPIEEE

#if !defined (_WIN32) && !defined (_MAC)
#error ERROR: Only Mac or Win32 targets supported!
#endif  /* !defined (_WIN32) && !defined (_MAC) */

#ifndef _CRTBLD
/* This version of the header files is NOT for user programs.
 * It is intended for use when building the C runtimes ONLY.
 * The version intended for public use will not have this message.
 */
#error ERROR: Use of C runtime library internal header file.
#endif  /* _CRTBLD */

#ifndef __assembler

#ifdef _MSC_VER
/*
 * Currently, all MS C compilers for Win32 platforms default to 8 byte
 * alignment.
 */
#pragma pack(push,8)
#endif  /* _MSC_VER */

#ifdef __cplusplus
extern "C" {
#endif  /* __cplusplus */

#ifndef _INTERNAL_IFSTRIP_
#include <cruntime.h>
#endif  /* _INTERNAL_IFSTRIP_ */


/* Define _CRTIMP */

#ifndef _CRTIMP
#ifdef CRTDLL
#define _CRTIMP __declspec(dllexport)
#else  /* CRTDLL */
#ifdef _DLL
#define _CRTIMP __declspec(dllimport)
#else  /* _DLL */
#define _CRTIMP
#endif  /* _DLL */
#endif  /* CRTDLL */
#endif  /* _CRTIMP */


/* Define __cdecl for non-Microsoft compilers */

#if (!defined (_MSC_VER) && !defined (__cdecl))
#define __cdecl
#endif  /* (!defined (_MSC_VER) && !defined (__cdecl)) */

/* Define _CRTAPI1 (for compatibility with the NT SDK) */

#ifndef _CRTAPI1
#if _MSC_VER >= 800 && _M_IX86 >= 300
#define _CRTAPI1 __cdecl
#else  /* _MSC_VER >= 800 && _M_IX86 >= 300 */
#define _CRTAPI1
#endif  /* _MSC_VER >= 800 && _M_IX86 >= 300 */
#endif  /* _CRTAPI1 */

/*
 * Define floating point IEEE compare result values.
 */

typedef enum {
    _FpCompareEqual,
    _FpCompareGreater,
    _FpCompareLess,
    _FpCompareUnordered
} _FPIEEE_COMPARE_RESULT;

/*
 * Define floating point format and result precision values.
 */

typedef enum {
    _FpFormatFp32,
    _FpFormatFp64,
    _FpFormatFp80,
    _FpFormatFp128,
    _FpFormatI16,
    _FpFormatI32,
    _FpFormatI64,
    _FpFormatU16,
    _FpFormatU32,
    _FpFormatU64,
    _FpFormatBcd80,
    _FpFormatCompare,
    _FpFormatString
} _FPIEEE_FORMAT;

/*
 * Define operation code values.
 */

typedef enum {
    _FpCodeUnspecified,
    _FpCodeAdd,
    _FpCodeSubtract,
    _FpCodeMultiply,
    _FpCodeDivide,
    _FpCodeSquareRoot,
    _FpCodeRemainder,
    _FpCodeCompare,
    _FpCodeConvert,
    _FpCodeRound,
    _FpCodeTruncate,
    _FpCodeFloor,
    _FpCodeCeil,
    _FpCodeAcos,
    _FpCodeAsin,
    _FpCodeAtan,
    _FpCodeAtan2,
    _FpCodeCabs,
    _FpCodeCos,
    _FpCodeCosh,
    _FpCodeExp,
    _FpCodeFabs,
    _FpCodeFmod,
    _FpCodeFrexp,
    _FpCodeHypot,
    _FpCodeLdexp,
    _FpCodeLog,
    _FpCodeLog10,
    _FpCodeModf,
    _FpCodePow,
    _FpCodeSin,
    _FpCodeSinh,
    _FpCodeTan,
    _FpCodeTanh,
    _FpCodeY0,
    _FpCodeY1,
    _FpCodeYn,
    _FpCodeLogb,
    _FpCodeNextafter,
    _FpCodeNegate

} _FP_OPERATION_CODE;

#endif  /* __assembler */
#ifndef _INTERNAL_IFSTRIP_
#ifndef __assembler

#define OP_UNSPEC    _FpCodeUnspecified
#define OP_ADD       _FpCodeAdd
#define OP_SUB       _FpCodeSubtract
#define OP_MUL       _FpCodeMultiply
#define OP_DIV       _FpCodeDivide
#define OP_REM       _FpCodeRemainder
#define OP_COMP      _FpCodeCompare
#define OP_CVT       _FpCodeConvert
#define OP_RND       _FpCodeRound
#define OP_TRUNC     _FpCodeTruncate

#define OP_EXP       _FpCodeExp

#define OP_POW       _FpCodePow
#define OP_LOG       _FpCodeLog
#define OP_LOG10     _FpCodeLog10
#define OP_SINH      _FpCodeSinh
#define OP_COSH      _FpCodeCosh
#define OP_TANH      _FpCodeTanh
#define OP_ASIN      _FpCodeAsin
#define OP_ACOS      _FpCodeAcos
#define OP_ATAN      _FpCodeAtan
#define OP_ATAN2     _FpCodeAtan2
#define OP_SQRT      _FpCodeSquareRoot
#define OP_SIN       _FpCodeSin
#define OP_COS       _FpCodeCos
#define OP_TAN       _FpCodeTan
#define OP_CEIL      _FpCodeCeil
#define OP_FLOOR     _FpCodeFloor
#define OP_ABS       _FpCodeFabs
#define OP_MODF      _FpCodeModf
#define OP_LDEXP     _FpCodeLdexp
#define OP_CABS      _FpCodeCabs
#define OP_HYPOT     _FpCodeHypot
#define OP_FMOD      _FpCodeFmod
#define OP_FREXP     _FpCodeFrexp
#define OP_Y0        _FpCodeY0
#define OP_Y1        _FpCodeY1
#define OP_YN        _FpCodeYn

#define OP_LOGB       _FpCodeLogb
#define OP_NEXTAFTER  _FpCodeNextafter
#else  /* __assembler */

/* This must be the same as the enumerator _FP_OPERATION_CODE ! */
#define OP_UNSPEC    0
#define OP_ADD       1
#define OP_SUB       2
#define OP_MUL       3
#define OP_DIV       4
#define OP_SQRT      5
#define OP_REM       6
#define OP_COMP      7
#define OP_CVT       8
#define OP_RND       9
#define OP_TRUNC     10
#define OP_FLOOR     11
#define OP_CEIL      12
#define OP_ACOS      13
#define OP_ASIN      14
#define OP_ATAN      15
#define OP_ATAN2     16
#define OP_CABS      17
#define OP_COS       18
#define OP_COSH      19
#define OP_EXP       20
#define OP_ABS       21         /* same as OP_FABS */
#define OP_FABS      21         /* same as OP_ABS  */
#define OP_FMOD      22
#define OP_FREXP     23
#define OP_HYPOT     24
#define OP_LDEXP     25
#define OP_LOG       26
#define OP_LOG10     27
#define OP_MODF      28
#define OP_POW       29
#define OP_SIN       30
#define OP_SINH      31
#define OP_TAN       32
#define OP_TANH      33
#define OP_Y0        34
#define OP_Y1        35
#define OP_YN        36
#define OP_LOGB       37
#define OP_NEXTAFTER  38
#define OP_NEG       39

#endif  /* __assembler */
#endif  /* _INTERNAL_IFSTRIP_ */

/*
 * Define rounding modes.
 */

#ifndef __assembler

typedef enum {
    _FpRoundNearest,
    _FpRoundMinusInfinity,
    _FpRoundPlusInfinity,
    _FpRoundChopped
} _FPIEEE_ROUNDING_MODE;

typedef enum {
    _FpPrecisionFull,
    _FpPrecision53,
    _FpPrecision24
} _FPIEEE_PRECISION;


/*
 * Define floating point context record
 */

typedef float           _FP32;
typedef double          _FP64;
typedef short           _I16;
typedef int             _I32;
typedef unsigned short  _U16;
typedef unsigned int    _U32;

#ifndef _INTERNAL_IFSTRIP_
typedef struct {
    unsigned long W[4];
} _U32ARRAY;
#endif  /* _INTERNAL_IFSTRIP_ */

typedef struct {
    unsigned short W[5];
} _FP80;

typedef struct {
    unsigned long W[4];
} _FP128;

typedef struct {
    unsigned long W[2];
} _I64;

typedef struct {
    unsigned long W[2];
} _U64;

typedef struct {
    unsigned short W[5];
} _BCD80;


typedef struct {
    union {
        _FP32        Fp32Value;
        _FP64        Fp64Value;
        _FP80        Fp80Value;
        _FP128       Fp128Value;
        _I16         I16Value;
        _I32         I32Value;
        _I64         I64Value;
        _U16         U16Value;
        _U32         U32Value;
        _U64         U64Value;
        _BCD80       Bcd80Value;
        char         *StringValue;
        int          CompareValue;
#ifndef _INTERNAL_IFSTRIP_
        _U32ARRAY    U32ArrayValue;
#endif  /* _INTERNAL_IFSTRIP_ */
    } Value;

    unsigned int OperandValid : 1;
    unsigned int Format : 4;

} _FPIEEE_VALUE;


typedef struct {
    unsigned int Inexact : 1;
    unsigned int Underflow : 1;
    unsigned int Overflow : 1;
    unsigned int ZeroDivide : 1;
    unsigned int InvalidOperation : 1;
} _FPIEEE_EXCEPTION_FLAGS;


typedef struct {
    unsigned int RoundingMode : 2;
    unsigned int Precision : 3;
    unsigned int Operation :12;
    _FPIEEE_EXCEPTION_FLAGS Cause;
    _FPIEEE_EXCEPTION_FLAGS Enable;
    _FPIEEE_EXCEPTION_FLAGS Status;
    _FPIEEE_VALUE Operand1;
    _FPIEEE_VALUE Operand2;
    _FPIEEE_VALUE Result;
} _FPIEEE_RECORD;


struct _EXCEPTION_POINTERS;

/*
 * Floating point IEEE exception filter routine
 */

_CRTIMP int __cdecl _fpieee_flt(
        unsigned long,
        struct _EXCEPTION_POINTERS *,
        int (__cdecl *)(_FPIEEE_RECORD *)
        );

#ifdef __cplusplus
}
#endif  /* __cplusplus */

#ifdef _MSC_VER
#pragma pack(pop)
#endif  /* _MSC_VER */
#endif  /* __assembler */

#endif  /* _INC_FPIEEE */