Seed value for PRNG

[Gaurav Nagare]

Hi,

I want to know what is seed value passed to the PRNG. From the function
static int bnrand <ident?v=openssl-0.9.7a;i=bnrand> (int pseudorand,
BIGNUM <ident?v=openssl-0.9.7a;i=BIGNUM>  *rnd, int bits
<ident?v=openssl-0.9.7a;i=bits> , int top, int bottom) in file
"crypto/bn/bn_rand.c", it appears that system time is passed as a seed.
Please let me know if this is correct.
Thank you.
Regards,
Gaurav