double func2_m2n(double m)
{
double ncen,nsat,x;
m = exp(m);
ncen = N_cen(m);
nsat = N_sat(m);
x = poisson_prob(g31_number-1,nsat);
if(isnan(x))x = 0;
return ncen*x*m*dndM_interp(m);
}
/* Generate a random integer based on a Poisson distribution
* with mean given as input.
*/
int poisson_deviate(double nave)
{
static int flag=0;
double p,pp;
int n;
p=0;
pp=1;
while(p<pp)
{
if(nave<1)
n=(int)(drand48()*20);
else
n=(int)(drand48()*30*nave);
p=poisson_prob(n,nave);
pp=drand48();
}
return(n);
}