NAME
    IEEESPExp -- compute the exponential of e
SYNOPSIS
      x   = IEEESPExp(  y  );
    d0                d0
    float   x,y;
FUNCTION
    Compute e^y in IEEE single precision
INPUTS
    y - IEEE single precision floating point value
RESULT
    x - IEEE single precision floating point value
BUGS
SEE ALSO
    ieeesplog()