In numpy/random/_common.pxd random_double_fill is defined as returning double

ctypedef double (*random_double_fill)(bitgen_t *state, np.npy_intp count, double* out) nogil

But in c_distributions.pxd the fill functions are defined as returning void e.g.

void random_standard_uniform_fill(bitgen_t* bitgen_state, npy_intp cnt, double *out) nogil

This causes problems on webassembly where return types are checked.