Im writting a math program to calculate the area below a curve. Everything seems to be fine only that in the following funcion:

float y(float x) {

float y;

/* 1

y = --------

exp(x^2)

*/

/* y = 1 / fabs(exp(x*x));*/

y= 1/fabs(exp(x*x));

return y;

}

I get this error when I compile it (gcc 2.95.3) on linux 2.4.18:

/tmp/ccvlcwTt.o: In function `y':

/tmp/ccvlcwTt.o(.text+0x5e): undefined reference to `exp'

Thanks for your help