float.h

来源：互联网发布：租用阿里云vps 编辑：程序博客网时间：2024/04/30 17:44

今天改用SimpleScalar的gcc编译mibench的时候发现automotive里面的basicmath里面有引用float.h但是gcc由于版本比较低，不识别，所以我把#include <float.h>注释掉了，但是里面会用到DBL_MAX这个宏，无奈之下从网上搜到float.h然后自己定义了一个DBL_MAX宏，解决了，但是float.h还是贴过来了，防止以后用得着。

/***

*float.h - constants for floating point values

*Purpose:

* This file contains defines for a number of implementation dependent

* values which are commonly used by sophisticated numerical (floating

* point) programs.

* [ANSI]

* [Public]

****/

#if _MSC_VER > 1000

#pragma once

#endif

#ifndef _INC_FLOAT

#define _INC_FLOAT

#include <crtdefs.h>

#include <crtwrn.h>

/* Define _CRT_MANAGED_FP_DEPRECATE */

#ifndef _CRT_MANAGED_FP_DEPRECATE

#ifdef _CRT_MANAGED_FP_NO_DEPRECATE

#define _CRT_MANAGED_FP_DEPRECATE

#else

#if defined(_M_CEE)

#define _CRT_MANAGED_FP_DEPRECATE _CRT_DEPRECATE_TEXT("Direct floating point control is not supported or reliable from within managed code. ")

#else

#define _CRT_MANAGED_FP_DEPRECATE

#endif

#ifdef __cplusplus

extern "C" {

#endif

#define DBL_DIG 15 /* # of decimal digits of precision */

#define DBL_EPSILON 2.2204460492503131e-016 /* smallest such that 1.0+DBL_EPSILON != 1.0 */

#define DBL_MANT_DIG 53 /* # of bits in mantissa */

#define DBL_MAX 1.7976931348623158e+308 /* max value */

#define DBL_MAX_10_EXP 308 /* max decimal exponent */

#define DBL_MAX_EXP 1024 /* max binary exponent */

#define DBL_MIN 2.2250738585072014e-308 /* min positive value */

#define DBL_MIN_10_EXP (-307) /* min decimal exponent */

#define DBL_MIN_EXP (-1021) /* min binary exponent */

#define _DBL_RADIX 2 /* exponent radix */

#define _DBL_ROUNDS 1 /* addition rounding: near */

#define FLT_DIG 6 /* # of decimal digits of precision */

#define FLT_EPSILON 1.192092896e-07F /* smallest such that 1.0+FLT_EPSILON != 1.0 */

#define FLT_GUARD 0

#define FLT_MANT_DIG 24 /* # of bits in mantissa */

#define FLT_MAX 3.402823466e+38F /* max value */

#define FLT_MAX_10_EXP 38 /* max decimal exponent */

#define FLT_MAX_EXP 128 /* max binary exponent */

#define FLT_MIN 1.175494351e-38F /* min positive value */

#define FLT_MIN_10_EXP (-37) /* min decimal exponent */

#define FLT_MIN_EXP (-125) /* min binary exponent */

#define FLT_NORMALIZE 0

#define FLT_RADIX 2 /* exponent radix */

#define FLT_ROUNDS 1 /* addition rounding: near */

#define LDBL_DIG DBL_DIG /* # of decimal digits of precision */

#define LDBL_EPSILON DBL_EPSILON /* smallest such that 1.0+LDBL_EPSILON != 1.0 */

#define LDBL_MANT_DIG DBL_MANT_DIG /* # of bits in mantissa */

#define LDBL_MAX DBL_MAX /* max value */

#define LDBL_MAX_10_EXP DBL_MAX_10_EXP /* max decimal exponent */

#define LDBL_MAX_EXP DBL_MAX_EXP /* max binary exponent */

#define LDBL_MIN DBL_MIN /* min positive value */

#define LDBL_MIN_10_EXP DBL_MIN_10_EXP /* min decimal exponent */

#define LDBL_MIN_EXP DBL_MIN_EXP /* min binary exponent */

#define _LDBL_RADIX DBL_RADIX /* exponent radix */

#define _LDBL_ROUNDS DBL_ROUNDS /* addition rounding: near */

/* Function prototypes */

/* Reading or writing the floating point control/status words is not supported in managed code */

_CRT_MANAGED_FP_DEPRECATE _CRTIMP unsigned int __cdecl _clearfp(void);

#pragma warning(push)

#pragma warning(disable: 4141)

_CRT_MANAGED_FP_DEPRECATE _CRT_INSECURE_DEPRECATE(_controlfp_s) _CRTIMP unsigned int __cdecl _controlfp(_In_ unsigned int _NewValue,_In_ unsigned int _Mask);

#pragma warning(pop)

_CRT_MANAGED_FP_DEPRECATE _CRTIMP void __cdecl _set_controlfp(_In_ unsigned int _NewValue, _In_ unsigned int _Mask);

_CRT_MANAGED_FP_DEPRECATE _CRTIMP errno_t __cdecl _controlfp_s(_Out_opt_ unsigned int *_CurrentState, _In_ unsigned int _NewValue, _In_ unsigned int _Mask);

_CRT_MANAGED_FP_DEPRECATE _CRTIMP unsigned int __cdecl _statusfp(void);

_CRT_MANAGED_FP_DEPRECATE _CRTIMP void __cdecl _fpreset(void);

#if defined(_M_IX86)

_CRT_MANAGED_FP_DEPRECATE _CRTIMP void __cdecl _statusfp2(_Out_opt_ unsigned int *_X86_status, _Out_opt_ unsigned int *_SSE2_status);

#endif

#define _clear87 _clearfp

#define _status87 _statusfp

* Abstract User Status Word bit definitions

#define _SW_INEXACT 0x00000001 /* inexact (precision) */

#define _SW_UNDERFLOW 0x00000002 /* underflow */

#define _SW_OVERFLOW 0x00000004 /* overflow */

#define _SW_ZERODIVIDE 0x00000008 /* zero divide */

#define _SW_INVALID 0x00000010 /* invalid */

#define _SW_DENORMAL 0x00080000 /* denormal status bit */

* New Control Bit that specifies the ambiguity in control word.

#define _EM_AMBIGUIOUS 0x80000000 /* for backwards compatibility old spelling */

#define _EM_AMBIGUOUS 0x80000000

* Abstract User Control Word Mask and bit definitions

#define _MCW_EM 0x0008001f /* interrupt Exception Masks */

#define _EM_INEXACT 0x00000001 /* inexact (precision) */

#define _EM_UNDERFLOW 0x00000002 /* underflow */

#define _EM_OVERFLOW 0x00000004 /* overflow */

#define _EM_ZERODIVIDE 0x00000008 /* zero divide */

#define _EM_INVALID 0x00000010 /* invalid */

#define _EM_DENORMAL 0x00080000 /* denormal exception mask (_control87 only) */

#define _MCW_RC 0x00000300 /* Rounding Control */

#define _RC_NEAR 0x00000000 /* near */

#define _RC_DOWN 0x00000100 /* down */

#define _RC_UP 0x00000200 /* up */

#define _RC_CHOP 0x00000300 /* chop */

* i386 specific definitions

#define _MCW_PC 0x00030000 /* Precision Control */

#define _PC_64 0x00000000 /* 64 bits */

#define _PC_53 0x00010000 /* 53 bits */

#define _PC_24 0x00020000 /* 24 bits */

#define _MCW_IC 0x00040000 /* Infinity Control */

#define _IC_AFFINE 0x00040000 /* affine */

#define _IC_PROJECTIVE 0x00000000 /* projective */

* RISC specific definitions

#define _MCW_DN 0x03000000 /* Denormal Control */

#define _DN_SAVE 0x00000000 /* save denormal results and operands */

#define _DN_FLUSH 0x01000000 /* flush denormal results and operands to zero */

#define _DN_FLUSH_OPERANDS_SAVE_RESULTS 0x02000000 /* flush operands to zero and save results */

#define _DN_SAVE_OPERANDS_FLUSH_RESULTS 0x03000000 /* save operands and flush results to zero */

/* initial Control Word value */

#if defined(_M_IX86)

#define _CW_DEFAULT ( _RC_NEAR + _PC_53 + _EM_INVALID + _EM_ZERODIVIDE + _EM_OVERFLOW + _EM_UNDERFLOW + _EM_INEXACT + _EM_DENORMAL)

#elif defined(_M_IA64)

#define _CW_DEFAULT ( _RC_NEAR + _PC_64 + _EM_INVALID + _EM_ZERODIVIDE + _EM_OVERFLOW + _EM_UNDERFLOW + _EM_INEXACT + _EM_DENORMAL)

#elif defined(_M_AMD64)

#define _CW_DEFAULT ( _RC_NEAR + _EM_INVALID + _EM_ZERODIVIDE + _EM_OVERFLOW + _EM_UNDERFLOW + _EM_INEXACT + _EM_DENORMAL)

#endif

_CRT_MANAGED_FP_DEPRECATE _CRTIMP unsigned int __cdecl _control87(_In_ unsigned int _NewValue,_In_ unsigned int _Mask);

#if defined(_M_IX86)

_CRT_MANAGED_FP_DEPRECATE _CRTIMP int __cdecl __control87_2(_In_ unsigned int _NewValue, _In_ unsigned int _Mask,

_Out_opt_ unsigned int* _X86_cw, _Out_opt_ unsigned int* _Sse2_cw);

#endif

/* Global variable holding floating point error code */

#if defined(_MT) || defined(_DLL)

_Check_return_ _CRTIMP extern int * __cdecl __fpecode(void);

#define _fpecode (*__fpecode())

#else /* ndef _MT && ndef _DLL */

extern int _fpecode;

#endif /* _MT || _DLL */

/* invalid subconditions (_SW_INVALID also set) */

#define _SW_UNEMULATED 0x0040 /* unemulated instruction */

#define _SW_SQRTNEG 0x0080 /* square root of a neg number */

#define _SW_STACKOVERFLOW 0x0200 /* FP stack overflow */

#define _SW_STACKUNDERFLOW 0x0400 /* FP stack underflow */

/* Floating point error signals and return codes */

#define _FPE_INVALID 0x81

#define _FPE_DENORMAL 0x82

#define _FPE_ZERODIVIDE 0x83

#define _FPE_OVERFLOW 0x84

#define _FPE_UNDERFLOW 0x85

#define _FPE_INEXACT 0x86

#define _FPE_UNEMULATED 0x87

#define _FPE_SQRTNEG 0x88

#define _FPE_STACKOVERFLOW 0x8a

#define _FPE_STACKUNDERFLOW 0x8b

#define _FPE_EXPLICITGEN 0x8c /* raise( SIGFPE ); */

/* IEEE recommended functions */

#ifndef _SIGN_DEFINED

_Check_return_ _CRTIMP double __cdecl _copysign (_In_ double _Number, _In_ double _Sign);

_Check_return_ _CRTIMP double __cdecl _chgsign (_In_ double _X);

#define _SIGN_DEFINED

#endif

_Check_return_ _CRTIMP double __cdecl _scalb(_In_ double _X, _In_ long _Y);

_Check_return_ _CRTIMP double __cdecl _logb(_In_ double _X);

_Check_return_ _CRTIMP double __cdecl _nextafter(_In_ double _X, _In_ double _Y);

_Check_return_ _CRTIMP int __cdecl _finite(_In_ double _X);

_Check_return_ _CRTIMP int __cdecl _isnan(_In_ double _X);

_Check_return_ _CRTIMP int __cdecl _fpclass(_In_ double _X);

#ifdef _M_AMD64

_Check_return_ _CRTIMP float __cdecl _scalbf(_In_ float _X, _In_ long _Y);

#endif

#define _FPCLASS_SNAN 0x0001 /* signaling NaN */

#define _FPCLASS_QNAN 0x0002 /* quiet NaN */

#define _FPCLASS_NINF 0x0004 /* negative infinity */

#define _FPCLASS_NN 0x0008 /* negative normal */

#define _FPCLASS_ND 0x0010 /* negative denormal */

#define _FPCLASS_NZ 0x0020 /* -0 */

#define _FPCLASS_PZ 0x0040 /* +0 */

#define _FPCLASS_PD 0x0080 /* positive denormal */

#define _FPCLASS_PN 0x0100 /* positive normal */

#define _FPCLASS_PINF 0x0200 /* positive infinity */

#if !__STDC__

/* Non-ANSI names for compatibility */

#define clear87 _clear87

#define status87 _status87

#define control87 _control87

_CRT_MANAGED_FP_DEPRECATE _CRTIMP void __cdecl fpreset(void);

#define DBL_RADIX _DBL_RADIX

#define DBL_ROUNDS _DBL_ROUNDS

#define LDBL_RADIX _LDBL_RADIX

#define LDBL_ROUNDS _LDBL_ROUNDS

#define EM_AMBIGUIOUS _EM_AMBIGUOUS /* for backwards compatibility old spelling */

#define EM_AMBIGUOUS _EM_AMBIGUOUS

#define MCW_EM _MCW_EM

#define EM_INVALID _EM_INVALID

#define EM_DENORMAL _EM_DENORMAL

#define EM_ZERODIVIDE _EM_ZERODIVIDE

#define EM_OVERFLOW _EM_OVERFLOW

#define EM_UNDERFLOW _EM_UNDERFLOW

#define EM_INEXACT _EM_INEXACT

#define MCW_IC _MCW_IC

#define IC_AFFINE _IC_AFFINE

#define IC_PROJECTIVE _IC_PROJECTIVE

#define MCW_RC _MCW_RC

#define RC_CHOP _RC_CHOP

#define RC_UP _RC_UP

#define RC_DOWN _RC_DOWN

#define RC_NEAR _RC_NEAR

#define MCW_PC _MCW_PC

#define PC_24 _PC_24

#define PC_53 _PC_53

#define PC_64 _PC_64

#define CW_DEFAULT _CW_DEFAULT

#define SW_INVALID _SW_INVALID

#define SW_DENORMAL _SW_DENORMAL

#define SW_ZERODIVIDE _SW_ZERODIVIDE

#define SW_OVERFLOW _SW_OVERFLOW

#define SW_UNDERFLOW _SW_UNDERFLOW

#define SW_INEXACT _SW_INEXACT

#define SW_UNEMULATED _SW_UNEMULATED

#define SW_SQRTNEG _SW_SQRTNEG

#define SW_STACKOVERFLOW _SW_STACKOVERFLOW

#define SW_STACKUNDERFLOW _SW_STACKUNDERFLOW

#define FPE_INVALID _FPE_INVALID

#define FPE_DENORMAL _FPE_DENORMAL

#define FPE_ZERODIVIDE _FPE_ZERODIVIDE

#define FPE_OVERFLOW _FPE_OVERFLOW

#define FPE_UNDERFLOW _FPE_UNDERFLOW

#define FPE_INEXACT _FPE_INEXACT

#define FPE_UNEMULATED _FPE_UNEMULATED

#define FPE_SQRTNEG _FPE_SQRTNEG

#define FPE_STACKOVERFLOW _FPE_STACKOVERFLOW

#define FPE_STACKUNDERFLOW _FPE_STACKUNDERFLOW

#define FPE_EXPLICITGEN _FPE_EXPLICITGEN

#endif /* __STDC__ */

#ifdef __cplusplus

}

#endif

#endif /* _INC_FLOAT */

0 0