C Reference function exp()

Usage of exp():

double exp(double x);

Parameters:

There is no range limit on the argument.

Return value:

There is no range limit on the return value.

Source code example of exp():


	#include<stdio.h>
	#include<math.h>

	main()
	{
		double input, output;
		input = 2.0;
		output = exp (input);
		printf ("Exponential value of %lf is %lf.\n", input, output);
		return 0;
	}

Output of the exp example program above:


	Exponential value of 2.000000 is 7.389056

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There are currently 2 responses to “C Reference function exp()”

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karthikeyan on March 5th, 2010:
this exp fun’s aren’t working in gcc compilers………..
admin on March 5th, 2010:
@karthikeyan

This is not true!
You probably get the following error: ERROR: Undefined symbol: .exp

The solution is that you are forgetting to link the math library during compilation, to link the math lib use “-lm”.
For example: gcc exptest.c -o exptest -lm

Than it should work, good luck!