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std::numeric_limits::min_exponent10

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C++
 
Bibliothèque d'utilitaires
 
Soutien aux types fondamentaux
Les types de base
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Basic types
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Types fondamentaux
Fixe les types entiers largeur (C++11)
Limites numériques
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Numeric limits
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numeric_limits
C numérique limite interface
Informations sur le type d'exécution
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Runtime type information
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Caractères de type
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Type traits
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Catégories de type primaire
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Primary type categories
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is_void (C++11)
is_array (C++11)
is_pointer (C++11)
is_enum (C++11)
is_union (C++11)
is_class (C++11)
is_function (C++11)
is_object (C++11)
is_scalar (C++11)
is_compound (C++11)
is_integral (C++11)
is_floating_point (C++11)
is_fundamental (C++11)
is_arithmetic (C++11)
is_reference (C++11)
is_lvalue_reference (C++11)
is_rvalue_reference (C++11)
is_member_pointer (C++11)
is_member_object_pointer (C++11)
is_member_function_pointer (C++11)
Les propriétés du type
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Type properties
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is_const (C++11)
is_volatile (C++11)
is_pod (C++11)
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is_abstract (C++11)
Opérations prises en charge
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Supported operations
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is_constructible
is_trivially_constructible
is_nothrow_constructible		 (C++11)
(C++11)
(C++11)
is_default_constructible
is_trivially_default_constructible
is_nothrow_default_constructible		 (C++11)
(C++11)
(C++11)
is_copy_constructible
is_trivially_copy_constructible
is_nothrow_copy_constructible		 (C++11)
(C++11)
(C++11)
is_move_constructible
is_trivially_move_constructible
is_nothrow_move_constructible		 (C++11)
(C++11)
(C++11)
is_assignable
is_trivially_assignable
is_nothrow_assignable		 (C++11)
(C++11)
(C++11)
is_copy_assignable
is_trivially_copy_assignable
is_nothrow_copy_assignable		 (C++11)
(C++11)
(C++11)
is_move_assignable
is_trivially_move_assignable
is_nothrow_move_assignable		 (C++11)
(C++11)
(C++11)
is_destructible
is_trivially_destructible
is_nothrow_destructible		 (C++11)
(C++11)
(C++11)
has_virtual_destructor (C++11)
Les relations et les requêtes de propriété
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Relationships and property queries
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is_same (C++11)
is_base_of (C++11)
is_convertible (C++11)
alignment_of (C++11)
rank (C++11)
extent (C++11)
Modifications de type
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Type modifications
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remove_cv
remove_const
remove_volatile		 (C++11)
(C++11)
(C++11)
add_cv
add_const
add_volatile		 (C++11)
(C++11)
(C++11)
make_signed (C++11)
make_unsigned (C++11)
Transformations de type
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Type transformations
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aligned_storage (C++11)
aligned_union (C++11)
decay (C++11)
enable_if (C++11)
conditional (C++11)
common_type (C++11)
underlying_type (C++11)
result_of (C++11)
Tapez constantes traits
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Type trait constants
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integral_constant (C++11)
 
std::numeric_limits
Constantes statiques
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Static constants
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numeric_limits::is_specialized
numeric_limits::is_signed
numeric_limits::is_integer
numeric_limits::is_exact
numeric_limits::has_infinity
numeric_limits::has_quiet_NaN
numeric_limits::has_signaling_NaN
numeric_limits::has_denorm
numeric_limits::has_denorm_loss
numeric_limits::round_style
numeric_limits::is_iec559
numeric_limits::is_bounded
numeric_limits::is_modulo
numeric_limits::digits
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
Fonctions membres statiques
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Static member functions
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numeric_limits::min
numeric_limits::lowest (C++11)
numeric_limits::max
numeric_limits::epsilon
numeric_limits::round_error
numeric_limits::infinity
numeric_limits::quiet_NaN
numeric_limits::signaling_NaN
numeric_limits::denorm_min
Types d'aide
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Helper types
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float_round_style
float_denorm_style
 
static const int min_exponent10
 (avant C++11)
static constexpr int min_exponent10
 (depuis C++11)
La valeur de std::numeric_limits<T>::min_exponent10 est le plus petit nombre négatif n tels que 10n
 est une valeur valide normalisée du type à virgule flottante T .
Original:
The value of std::numeric_limits<T>::min_exponent10 is the lowest negative number n such that 10n
 is a valid normalized value of the floating-point type T.
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[modifier] Spécialisations standard

T
valeur de std::numeric_limits<T>::min_exponent10
Original:
value of std::numeric_limits<T>::min_exponent10
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/* non-specialized */ ​0​
bool ​0​
char ​0​
signed char ​0​
unsigned char ​0​
wchar_t ​0​
char16_t ​0​
char32_t ​0​
short ​0​
unsigned short ​0​
int ​0​
unsigned int ​0​
long ​0​
unsigned long ​0​
long long ​0​
unsigned long long ​0​
float FLT_MIN_10_EXP
double DBL_MIN_10_EXP
long double LDBL_MIN_10_EXP

[modifier] Exemple

Montre les relations de min_exponent, min_exponent10, min, et radix pour le type float:
Original:
Demonstrates the relationships of min_exponent, min_exponent10, min, and radix for the type float:
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#include <iostream>
int main()
{
    std::cout << "min() = " << std::numeric_limits<float>::min() << '\n'
              << "min_exponent10 = " << std::numeric_limits<float>::min_exponent10 << '\n'
              << std::hexfloat
              << "min() = " << std::numeric_limits<float>::min() << '\n'
              << "min_exponent = " << std::numeric_limits<float>::min_exponent << '\n';
}

Résultat : 

min() = 1.17549e-38
min_exponent10 = -37
min() = 0x1p-126
min_exponent = -125

[modifier] Voir aussi

[
statique
Original:
static
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]
un de plus que la plus petite puissance négative de la racine qui est valide normalisé valeur à virgule flottante
Original:
one more than the smallest negative power of the radix that is a valid normalized floating-point value
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(constante membre statique publique) [edit]
[
statique
Original:
static
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]
un de plus que la plus grande puissance entière de la racine qui est valide finie valeur à virgule flottante
Original:
one more than the largest integer power of the radix that is a valid finite floating-point value
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(constante membre statique publique) [edit]
[
statique
Original:
static
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]
la plus grande puissance entière de 10 qui est valide finie valeur à virgule flottante
Original:
the largest integer power of 10 that is a valid finite floating-point value
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(constante membre statique publique) [edit]
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