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std::numeric_limits::round_error

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std::numeric_limits
 
static T round_error()
(avant C++11)
static constexpr T round_error()
(depuis C++11)
Retourne la plus grande erreur d'arrondi possible dans ULPs (unités en dernier lieu) tel que défini par la norme ISO 10967, qui peut varier de 0,5 (arrondi au chiffre le plus proche) à 1,0 (arrondi à zéro ou à l'infini). Il n'a de sens que si std::numeric_limits<T>::is_integer == false .
Original:
Returns the largest possible rounding error in ULPs (units in the last place) as defined by ISO 10967, which can vary from 0.5 (rounding to the nearest digit) to 1.0 (rounding to zero or to infinity). It is only meaningful if std::numeric_limits<T>::is_integer == false.
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[modifier] Retourne la valeur

T std::numeric_limits<T>::round_error()
/* non-specialized */ T();
bool false
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 0.5F
double 0.5
long double 0.5L

[modifier] Exceptions

noexcept specification:  
noexcept
   (depuis C++11)

[modifier] Voir aussi

[
statique
Original:
static
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]
identifie le type d'arrondi utilisé par le type
Original:
identifies the rounding style used by the type
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(constante membre statique publique) [edit]