std::frexp - cppreference.com
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      std::frexp

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      C++
       
      Biblioteca numéricos
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      Generic numeric operations
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      Basic operations
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      Exponential functions
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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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      <tbody> </tbody>
      Definido no cabeçalho <cmath>
      float frexp( float arg, int* exp );
      double frexp( double arg, int* exp );
      long double frexp( long double arg, int* exp );
      double frexp( Integral arg, int* exp );
      		 (desde C++11)
      Decompõe-se o valor determinado ponto flutuante para significand e expoente.
      Original:
      Decomposes given floating point value to significand and exponent.
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      Parâmetros

      arg -
      flutuando valor de ponto
      Original:
      floating point value
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      exp -
      ponteiro para valor inteiro para armazenar o expoente a
      Original:
      pointer to integer value to store the exponent to
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      Valor de retorno

      significando o número de ponto flutuante dado na gama de [0.5; 1). O expoente é colocado em valor inteiro apontado por exp.
      Original:
      significand of the given floating point number in the range of [0.5; 1). The exponent is put into integer value pointed to by exp.
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