expl.3.gz

EXP

exp, expf, expl - base-e exponential function

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

I float expf(float  x );

I long double expl(long double  x );

Link with -lm.

The R exp () function returns the value of e (the base of natural logarithms) raised to the power of x.

SVr4, 4.3BSD, C89, C99, POSIX.1-2001. The float and long double variants are C99 requirements.