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      std::numeric_limits::digits

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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)
      is_empty (C++11)
      is_polymorphic (C++11)
      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
       
      staticconstint digits
      		 (avant C++11)
      staticconstexprint digits
      		 (depuis C++11)
      La valeur de std::numeric_limits<T>::digits est le nombre de chiffres en base-radix qui peuvent être représentés par la T type sans changement. Pour les types entiers, il s'agit du nombre de bits sans compter le bit de signe. Pour types à virgule flottante, c'est le nombre de chiffres dans la mantisse .
      Original:
      The value of std::numeric_limits<T>::digits is the number of digits in base-radix that can be represented by the type T without change. For integer types, this is the number of bits not counting the sign bit. For floating-point types, this is the number of digits in the mantissa.
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      [modifier]Spécialisations standard

      T
      valeur de std::numeric_limits<T>::digits
      Original:
      value of std::numeric_limits<T>::digits
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      /* non-specialized */ ​0​
      bool1
      charCHAR_BIT-std::numeric_limits<char>::is_signed
      signedcharCHAR_BIT-1
      unsignedcharCHAR_BIT
      wchar_tCHAR_BIT*sizeof(wchar_t)-std::numeric_limits<wchar_t>::is_signed
      char16_tCHAR_BIT*sizeof(char16_t)
      char32_tCHAR_BIT*sizeof(char32_t)
      shortCHAR_BIT*sizeof(short)-1
      unsignedshortCHAR_BIT*sizeof(short)
      intCHAR_BIT*sizeof(int)-1
      unsignedintCHAR_BIT*sizeof(int)
      longCHAR_BIT*sizeof(long)-1
      unsignedlongCHAR_BIT*sizeof(long)
      longlongCHAR_BIT*sizeof(longlong)-1
      unsignedlonglongCHAR_BIT*sizeof(long)
      floatFLT_MANT_DIG
      doubleDBL_MANT_DIG
      longdoubleLDBL_MANT_DIG

      [modifier]Voir aussi

      [
      statique
      Original:
      static
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      ]
      la base ou la base utilisée par nombre entier de la représentation du type donné
      Original:
      the radix or integer base used by the representation of the given type
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      (constante membre statique publique)[edit]
      [
      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]
      Récupérée de « https://fr.cppreference.com/mwiki/index.php?title=cpp/types/numeric_limits/digits&oldid=49628 »
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