float.h File Reference

#include <crtdefs.h>
#include <crtwrn.h>

Go to the source code of this file.

Macros
#define	_INC_FLOAT
#define	_CRT_MANAGED_FP_DEPRECATE
#define	FLT_EVAL_METHOD   0
#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 */
#define	DECIMAL_DIG   10 /* float rounded to decimal and back */
#define	_clear87   _clearfp
#define	_status87   _statusfp
#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 */
#define	_EM_AMBIGUIOUS   0x80000000 /* for backwards compatibility old spelling */
#define	_EM_AMBIGUOUS   0x80000000
#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 */
#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 */
#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 */
#define	_fpecode   (*__fpecode())
#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 */
#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 ); */
#define	_FPE_MULTIPLE_TRAPS   0x8d /* on x86 with arch:SSE2 OS returns these exceptions */
#define	_FPE_MULTIPLE_FAULTS   0x8e
#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 */
#define	clear87   _clear87
#define	status87   _status87
#define	control87   _control87
#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

Functions
_CRT_MANAGED_FP_DEPRECATE _CRTIMP unsigned int __cdecl	_clearfp (void)
_CRT_MANAGED_FP_DEPRECATE	_CRT_INSECURE_DEPRECATE (_controlfp_s) _CRTIMP unsigned int __cdecl _controlfp(_In_ unsigned int _NewValue
_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)
_CRT_MANAGED_FP_DEPRECATE _CRTIMP unsigned int __cdecl	_control87 (_In_ unsigned int _NewValue, _In_ unsigned int _Mask)
_Check_return_ _CRTIMP int *__cdecl	__fpecode (void)
_Check_return_ _CRTIMP double __cdecl	_copysign (_In_ double _Number, _In_ double _Sign)
_Check_return_ _CRTIMP double __cdecl	_chgsign (_In_ double _X)
_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)
_CRT_MANAGED_FP_DEPRECATE _CRTIMP void __cdecl	fpreset (void)

Variables
_CRT_MANAGED_FP_DEPRECATE _In_ unsigned int	_Mask

Macro Definition Documentation

#define _clear87   _clearfp

#define _CRT_MANAGED_FP_DEPRECATE

#define _DBL_RADIX   2 /* exponent radix */

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

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

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

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

#define _EM_AMBIGUOUS   0x80000000

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

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

#define _EM_INVALID   0x00000010 /* invalid */

#define _EM_OVERFLOW   0x00000004 /* overflow */

#define _EM_UNDERFLOW   0x00000002 /* underflow */

#define _EM_ZERODIVIDE   0x00000008 /* zero divide */

#define _FPCLASS_ND   0x0010 /* negative denormal */

#define _FPCLASS_NINF   0x0004 /* negative infinity */

#define _FPCLASS_NN   0x0008 /* negative normal */

#define _FPCLASS_NZ   0x0020 /* -0 */

#define _FPCLASS_PD   0x0080 /* positive denormal */

#define _FPCLASS_PINF   0x0200 /* positive infinity */

#define _FPCLASS_PN   0x0100 /* positive normal */

#define _FPCLASS_PZ   0x0040 /* +0 */

#define _FPCLASS_QNAN   0x0002 /* quiet NaN */

#define _FPCLASS_SNAN   0x0001 /* signaling NaN */

#define _FPE_DENORMAL   0x82

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

#define _FPE_INEXACT   0x86

#define _FPE_INVALID   0x81

#define _FPE_MULTIPLE_FAULTS   0x8e

#define _FPE_MULTIPLE_TRAPS   0x8d /* on x86 with arch:SSE2 OS returns these exceptions */

#define _FPE_OVERFLOW   0x84

#define _FPE_SQRTNEG   0x88

#define _FPE_STACKOVERFLOW   0x8a

#define _FPE_STACKUNDERFLOW   0x8b

#define _FPE_UNDERFLOW   0x85

#define _FPE_UNEMULATED   0x87

#define _FPE_ZERODIVIDE   0x83

#define _fpecode   (*__fpecode())

#define _IC_AFFINE   0x00040000 /* affine */

#define _IC_PROJECTIVE   0x00000000 /* projective */

#define _INC_FLOAT

#define _LDBL_RADIX   DBL_RADIX /* exponent radix */

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

#define _MCW_DN   0x03000000 /* Denormal Control */

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

#define _MCW_IC   0x00040000 /* Infinity Control */

#define _MCW_PC   0x00030000 /* Precision Control */

#define _MCW_RC   0x00000300 /* Rounding Control */

#define _PC_24   0x00020000 /* 24 bits */

#define _PC_53   0x00010000 /* 53 bits */

#define _PC_64   0x00000000 /* 64 bits */

#define _RC_CHOP   0x00000300 /* chop */

#define _RC_DOWN   0x00000100 /* down */

#define _RC_NEAR   0x00000000 /* near */

#define _RC_UP   0x00000200 /* up */

#define _status87   _statusfp

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

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

#define _SW_INVALID   0x00000010 /* invalid */

#define _SW_OVERFLOW   0x00000004 /* overflow */

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

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

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

#define _SW_UNDERFLOW   0x00000002 /* underflow */

#define _SW_UNEMULATED   0x0040 /* unemulated instruction */

#define _SW_ZERODIVIDE   0x00000008 /* zero divide */

#define clear87   _clear87

#define control87   _control87

#define CW_DEFAULT   _CW_DEFAULT

#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   _DBL_RADIX

#define DBL_ROUNDS   _DBL_ROUNDS

#define DECIMAL_DIG   10 /* float rounded to decimal and back */

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

#define EM_AMBIGUOUS   _EM_AMBIGUOUS

#define EM_DENORMAL   _EM_DENORMAL

#define EM_INEXACT   _EM_INEXACT

#define EM_INVALID   _EM_INVALID

#define EM_OVERFLOW   _EM_OVERFLOW

#define EM_UNDERFLOW   _EM_UNDERFLOW

#define EM_ZERODIVIDE   _EM_ZERODIVIDE

#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_EVAL_METHOD   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 FPE_DENORMAL   _FPE_DENORMAL

#define FPE_EXPLICITGEN   _FPE_EXPLICITGEN

#define FPE_INEXACT   _FPE_INEXACT

#define FPE_INVALID   _FPE_INVALID

#define FPE_OVERFLOW   _FPE_OVERFLOW

#define FPE_SQRTNEG   _FPE_SQRTNEG

#define FPE_STACKOVERFLOW   _FPE_STACKOVERFLOW

#define FPE_STACKUNDERFLOW   _FPE_STACKUNDERFLOW

#define FPE_UNDERFLOW   _FPE_UNDERFLOW

#define FPE_UNEMULATED   _FPE_UNEMULATED

#define FPE_ZERODIVIDE   _FPE_ZERODIVIDE

#define IC_AFFINE   _IC_AFFINE

#define IC_PROJECTIVE   _IC_PROJECTIVE

#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   _LDBL_RADIX

#define LDBL_ROUNDS   _LDBL_ROUNDS

#define MCW_EM   _MCW_EM

#define MCW_IC   _MCW_IC

#define MCW_PC   _MCW_PC

#define MCW_RC   _MCW_RC

#define PC_24   _PC_24

#define PC_53   _PC_53

#define PC_64   _PC_64

#define RC_CHOP   _RC_CHOP

#define RC_DOWN   _RC_DOWN

#define RC_NEAR   _RC_NEAR

#define RC_UP   _RC_UP

#define status87   _status87

#define SW_DENORMAL   _SW_DENORMAL

#define SW_INEXACT   _SW_INEXACT

#define SW_INVALID   _SW_INVALID

#define SW_OVERFLOW   _SW_OVERFLOW

#define SW_SQRTNEG   _SW_SQRTNEG

#define SW_STACKOVERFLOW   _SW_STACKOVERFLOW

#define SW_STACKUNDERFLOW   _SW_STACKUNDERFLOW

#define SW_UNDERFLOW   _SW_UNDERFLOW

#define SW_UNEMULATED   _SW_UNEMULATED

#define SW_ZERODIVIDE   _SW_ZERODIVIDE

Function Documentation

_Check_return_ _CRTIMP int* __cdecl __fpecode

(

void

)

_Check_return_ _CRTIMP double __cdecl _chgsign

(

_In_ double

_X

)

_CRT_MANAGED_FP_DEPRECATE _CRTIMP unsigned int __cdecl _clearfp

(

void

)

_CRT_MANAGED_FP_DEPRECATE _CRTIMP unsigned int __cdecl _control87	(	_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
	)

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

_CRT_MANAGED_FP_DEPRECATE _CRT_INSECURE_DEPRECATE

(

_controlfp_s

)

_Check_return_ _CRTIMP int __cdecl _finite

(

_In_ double

_X

)

_Check_return_ _CRTIMP int __cdecl _fpclass

(

_In_ double

_X

)

_CRT_MANAGED_FP_DEPRECATE _CRTIMP void __cdecl _fpreset

(

void

)

_Check_return_ _CRTIMP int __cdecl _isnan

(

_In_ double

_X

)

_Check_return_ _CRTIMP double __cdecl _logb

(

_In_ double

_X

)

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

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

_CRT_MANAGED_FP_DEPRECATE _CRTIMP void __cdecl _set_controlfp	(	_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

)

Variable Documentation

_CRT_MANAGED_FP_DEPRECATE _In_ unsigned int _Mask