Utilisation de ‘frexp()’ pour calculer la mantissa et l’exposant, telle que:x = mantissa * 2exponent

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 calcul
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/*
#include

double frexp ( double x , int *exp  );
float frexpf ( float x , int *exp  );         (C99)
long double frexpl ( long double x , int *exp  );         (C99)

*/

  #include

  #include 

  int main(void)
  {
     int e;
     double f;

     f = frexp(4.0, &e);
     printf("%f %d", f, e);

	 return 0;

  }

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