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//
// A rust binding for the GSL library by Guillaume Gomez (guillaume1.gomez@gmail.com)
//

/// This function computes the probability p(k) of obtaining k from a negative binomial distribution with parameters p and n, using the formula given above.
#[doc(alias = "gsl_ran_negative_binomial_pdf")]
pub fn negative_binomial_pdf(k: u32, p: f64, n: f64) -> f64 {
    unsafe { sys::gsl_ran_negative_binomial_pdf(k, p, n) }
}

/// This function computes the cumulative distribution functions P(k), Q(k) for the negative binomial distribution with parameters p and n.
#[doc(alias = "gsl_cdf_negative_binomial_P")]
pub fn negative_binomial_P(k: u32, p: f64, n: f64) -> f64 {
    unsafe { sys::gsl_cdf_negative_binomial_P(k, p, n) }
}

/// This function computes the cumulative distribution functions P(k), Q(k) for the negative binomial distribution with parameters p and n.
#[doc(alias = "gsl_cdf_negative_binomial_Q")]
pub fn negative_binomial_Q(k: u32, p: f64, n: f64) -> f64 {
    unsafe { sys::gsl_cdf_negative_binomial_Q(k, p, n) }
}