__kernel_sinl
long double __kernel_sinl(long double, long double, int);
hi = - __kernel_sinl(hi, lo, 1);
hi = __kernel_sinl(hi, lo, 1);
hi = __kernel_sinl(hi, lo, 1);
hi = - __kernel_sinl(hi, lo, 1);
hi = __kernel_sinl(z.e, 0, 0);