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How to use exp2() function to get base-2 exponential, e (2) raised to the power of N in C

1 Answer

0 votes
#include <stdio.h>     
#include <math.h>
 
int main(int argc, char **argv)
{
	printf("exp2(-1) = %.6f\n", exp2(-1));
    printf("exp2(1) = %.6f\n", exp2(1));
    printf("exp2(0) = %.6f\n", exp2(0));
	printf("exp2(-0) = %.6f\n", exp2(-0));
	printf("exp2(5) = %.6f\n", exp2(5));
	printf("exp2(0.5) = %.6f\n", exp2(0.5));
	printf("exp2(-INFINITY) = %f\n", exp2(-INFINITY));
	printf("exp2(100) = %f\n", exp2(100));
	printf("exp2(1024) = %f\n", exp2(1024));

    return 0;
}

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

/*
run:
  
exp2(-1) = 0.500000
exp2(1) = 2.000000
exp2(0) = 1.000000
exp2(-0) = 1.000000
exp2(5) = 32.000000
exp2(0.5) = 1.414214
exp2(-INFINITY) = 0.000000
exp2(100) = 1267650600228229400000000000000.000000
exp2(1024) = 1.#INF00

*/

 



answered Mar 15, 2016 by avibootz
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