std::numeric_limits::max_exponent10

 

C++

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Gli operatori relazionali Original: Relational operators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

rel_ops::operator!= rel_ops::operator> rel_ops::operator<= rel_ops::operator>=

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Tipo di supporto

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numeric_limits
C numerico limita interfaccia
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std::numeric_limits

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numeric_limits::is_specialized

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numeric_limits::is_integer

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numeric_limits::digits10

numeric_limits::max_digits10 (C++11)

numeric_limits::radix

numeric_limits::min_exponent

numeric_limits::min_exponent10

numeric_limits::max_exponent

numeric_limits::max_exponent10

numeric_limits::traps

numeric_limits::tinyness_before

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numeric_limits::min

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numeric_limits::denorm_min

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float_round_style

float_denorm_style

 

staticconstint max_exponent10		(fino al c++11)
staticconstexprint max_exponent10		(dal C++11)

Il valore del std::numeric_limits<T>::max_exponent10 è il più grande numero positivo tale che n10n
è un valore rappresentabile finita del tipo a virgola mobile T.

Original:

The value of std::numeric_limits<T>::max_exponent10 is the largest positive number n such that 10n
is a representable finite value of the floating-point type T.

The text has been machine-translated via Google Translate.
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Specializzazioni standard

T	valore di std::numeric_limits<T>::max_exponent10 Original: value of std::numeric_limits<T>::max_exponent10 The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
/* non-specialized */	​0​
bool	​0​
char	​0​
signedchar	​0​
unsignedchar	​0​
wchar_t	​0​
char16_t	​0​
char32_t	​0​
short	​0​
unsignedshort	​0​
int	​0​
unsignedint	​0​
long	​0​
unsignedlong	​0​
longlong	​0​
unsignedlonglong	​0​
float	FLT_MAX_10_EXP
double	DBL_MAX_10_EXP
longdouble	LDBL_MAX_10_EXP

Esempio

Vengono illustrate le relazioni di max_exponent, max_exponent10, e max () per il tipo float:

Original:

Demonstrates the relationships of max_exponent, max_exponent10, and max() for the type float:

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

#include <iostream>int main(){std::cout<<"max() = "<<std::numeric_limits<float>::max()<<'\n'<<"max_exponent10 = "<<std::numeric_limits<float>::max_exponent10<<'\n'<<std::hexfloat<<"max() = "<<std::numeric_limits<float>::max()<<'\n'<<"max_exponent = "<<std::numeric_limits<float>::max_exponent<<'\n';}

Output:

max() = 3.40282e+38 max_exponent10 = 38 max() = 0x1.fffffep+127 max_exponent = 128

Vedi anche

min_exponent10 [statico]	la più piccola potenza negativa di dieci, che è un valido normalizzato valore a virgola mobile Original: the smallest negative power of ten that is a valid normalized floating-point value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (pubblico membro statico costante)
max_exponent [statico]	maggiore della massima potenza intera della radice che è una valida finita valore a virgola mobile uno Original: one more than the largest integer power of the radix that is a valid finite floating-point value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (pubblico membro statico costante)
max_exponent10 [statico]	la più grande potenza intera di 10 che è un valido finita valore a virgola mobile Original: the largest integer power of 10 that is a valid finite floating-point value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (pubblico membro statico costante)