Syntax

#include <math.h>
double exp(double x);

exp calculates the exponential function of a floating-point argument x (ex, where e equals 2.17128128...).

If an overflow occurs, exp returns HUGE_VAL. If an underflow occurs, it returns 0. Both overflow and underflow set errno to ERANGE.

This example calculates y as the exponential function of x:

#include <math.h>

int main(void)
{
   double x,y;

   x = 5.0;
   y = exp(x);
   printf("exp( %lf ) = %lf\n", x, y);
   return 0;

   /****************************************************************************
      The output should be:

      exp( 5.000000 ) = 148.413159
   ****************************************************************************/
}

• log
  
• log10

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