C/C++: Obtenir l’exposant et la mantissa d’une valeur en vrigule flottante

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#include 
#include


int main ()
{
  double x, resultat;
  int y;

  x = 3.5;

  resultat = frexp (x , &y);

  printf ("%f * 2^%d = %f", resultat, y, x);

  return 0;
}

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