athn_get_delta_slope
athn_get_delta_slope(coeff, &exp, &man);
athn_get_delta_slope(coeff, &exp, &man);
athn_get_delta_slope(coeff, &exp, &man);
athn_get_delta_slope(coeff, &exp, &man);
void athn_get_delta_slope(uint32_t, uint32_t *, uint32_t *);