16 # x*log2e < -65, return -1 without underflow
52 cmpl $0xc67ff800,(%esp)
54 movl $0x5f000000,(%esp)
62 je 2f # x - 0x1p63 + 0x1p63 == x
64 flds (%esp) # 0x1p-149
66 fstps (%esp) # raise underflow
71 fsub %st(2) # st(0)=x-rint(x), st(1)=1, st(2)=rint(x)
90 fldt (%esp) # 2^rint(x)