Update cupy/math/special.py
@@ -13,7 +13,7 @@ i0 = ufunc.create_math_ufunc(
sinc = core.create_ufunc(
'cupy_sinc',
- ('e->e', 'f->f', 'd->',
+ ('e->e', 'f->f', 'd->d',
('F->F', 'in0_type pi_in0 = (in0_type) M_PI * in0;'
'out0 = abs(in0) > 1e-9 ? sin(pi_in0) / (pi_in0) : 1'),
('D->D', 'in0_type pi_in0 = (in0_type) M_PI * in0;'
