Question

How to use exp() function to get base-e exponential, e (2.7182818) raised to the power of N in C

Answer 1

#include <stdio.h>     
#include <math.h>
 
int main(int argc, char **argv)
{
	printf("exp(-1) = %.6f\n", exp(-1));
    printf("exp(1) = %.6f\n", exp(1));
    printf("exp(0) = %.6f\n", exp(0));
	printf("exp(-0) = %.6f\n", exp(-0));
	printf("exp(-Inf) = %f\n", exp(-INFINITY));
	printf("exp(100) = %f\n", exp(100));
	printf("exp(710) = %f\n", exp(710));

    return 0;
}

// 1.#INF00 - inf - Numerical result out of range

/*
run:
  
exp(-1) = 0.367879
exp(-1) = 0.367879
exp(1) = 2.718282
exp(0) = 1.000000
exp(-0) = 1.000000
exp(-INFINITY) = 0.000000
exp(100) = 26881171418161356000000000000000000000000000.000000
exp(710) = 1.#INF00 

*/

 

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