| from cupy import _core | |
| from cupy._math import ufunc | |
| i0 = ufunc.create_math_ufunc( | |
| 'cyl_bessel_i0', 1, 'cupy_i0', | |
| '''Modified Bessel function of the first kind, order 0. | |
| .. seealso:: :func:`numpy.i0` | |
| ''') | |
| sinc = _core.create_ufunc( | |
| 'cupy_sinc', | |
| ('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;' | |
| 'out0 = abs(in0) > 1e-9 ? sin(pi_in0) / (pi_in0) : 1')), | |
| 'out0 = abs(in0) > 1e-9 ? sinpi(in0) / (M_PI * in0) : 1', | |
| doc='''Elementwise sinc function. | |
| .. seealso:: :func:`numpy.sinc` | |
| ''') | |