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      std::tgamma

      Da cppreference.com
      < cpp‎ | numeric‎ | math

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      C++
       
      Biblioteca numéricos
      Funções matemáticas comuns
      De ponto flutuante ambiente
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      Matrizes numéricas
      Pseudo-aleatório de geração de números
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      Genéricos operações numéricas
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      Generic numeric operations
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      Funções matemáticas comuns
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      Functions
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      Operações básicas
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      Basic operations
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      Funções exponenciais
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      Exponential functions
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      Funções de poder
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      Power functions
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      Trigonometric and hyperbolic functions
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      Erro e funções gamma
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      Error and gamma functions
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      tgamma
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      Número inteiro mais próximo de operações de ponto flutuante
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      Nearest integer floating point operations
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      Flutuando funções de manipulação de pontos
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      Floating point manipulation functions
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      Definido no cabeçalho <cmath>
      float       tgamma(float arg );
      		(desde C++11)
      double      tgamma(double arg );
      		(desde C++11)
      longdouble tgamma(longdouble arg );
      		(desde C++11)
      double      tgamma( Integral arg );
      		(desde C++11)
      Calcula a gama de funções de arg.
      Original:
      Computes the gama de funções of arg.
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      Índice

      [editar]Parâmetros

      arg -
      flutuando valor de ponto
      Original:
      floating point value
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      [editar]Valor de retorno

      O valor da função gama de arg, isto é ∫∞
      0      targ-1
      e-t dt      .
      Original:
      The value of the gamma function of arg, that is ∫∞
      0      targ-1
      e-t dt      .
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      Se arg é um número natural, std::tgamma(arg) é o fatorial de arg-1.
      Original:
      If arg is a natural number, std::tgamma(arg) is the factorial of arg-1.
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      [editar]Exceções

      Se arg é negativo, o erro de domínio pode ocorrer e pode ser elevado FE_INVALID.
      Original:
      If arg is negative, domain error may occur and FE_INVALID may be raised.
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      Se arg é zero, o erro pode ocorrer pólo e FE_DIVBYZERO pode ser levantada.
      Original:
      If arg is zero, pole error may occur and FE_DIVBYZERO may be raised.
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      Se arg for demasiado grande, intervalo de erro pode ocorrer e pode ser elevado FE_OVERFLOW.
      Original:
      If arg is too large, range error may occur and FE_OVERFLOW may be raised.
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      Se arg é muito pequeno, intervalo de erro pode ocorrer e pode ser elevado FE_UNDERFLOW.
      Original:
      If arg is too small, range error may occur and FE_UNDERFLOW may be raised.
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      [editar]Notas

      Muitas implementações calcular o exato número inteiro domínio fatorial se o argumento é um inteiro suficientemente pequeno.
      Original:
      Many implementations calculate the exact integer-domain factorial if the argument is a sufficiently small integer.
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      [editar]Exemplo

      #include <iostream>#include <cmath>double factorial(double arg){return std::tgamma(arg +1);}int main(){std::cout<<"The factorial of 5 is "<< factorial(5)<<'\n'<<"The factorial of 100 is "<< factorial(100)<<'\n';}

      Saída: 

      The factorial of 5 is 120 The factorial of 100 is 9.33262e+157


      [editar]Veja também

      (C++11)
      logaritmo natural da função gama
      Original:
      natural logarithm of the gamma function
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      (função)[edit]

      [editar]Links externos

      Weisstein, Eric W. "Gamma Function." De MathWorld - Um recurso Web Wolfram.
      Original:
      Weisstein, Eric W. "Gamma Function." From MathWorld--A Wolfram Web Resource.
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      Obtida de "https://pt.cppreference.com/mwiki/index.php?title=cpp/numeric/math/tgamma&oldid=21289"
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