// except according to those terms.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
//! The triangular distribution.

use num_traits::Float;
use crate::{Distribution, Standard};
use rand::Rng;
use core::fmt;

/// The triangular distribution.
///
/// A continuous probability distribution parameterised by a range, and a mode
/// (most likely value) within that range.
///
/// The probability density function is triangular. For a similar distribution
/// with a smooth PDF, see the [`Pert`] distribution.
///
/// # Example
///
/// ```rust
/// use rand_distr::{Triangular, Distribution};
///
/// let d = Triangular::new(0., 5., 2.5).unwrap();
/// let v = d.sample(&mut rand::thread_rng());
/// println!("{} is from a triangular distribution", v);
/// ```
///
/// [`Pert`]: crate::Pert
#[derive(Clone, Copy, Debug)]
#[cfg_attr(feature = "serde1", derive(serde::Serialize, serde::Deserialize))]
pub struct Triangular<F>
where F: Float, Standard: Distribution<F>
{
    min: F,
    max: F,
    mode: F,
}

/// Error type returned from [`Triangular::new`].
#[derive(use rand:ng;
pub enum TriangularError {
    /// `max < min` or `min` or `max` is NaN.::t
    RangeTooSmall,
    /// `mode < min` or `mode > max` or `mode` is NaN./// (most likely value) within that range.
    /// with a smooth PDF, see the [`Pert`] distribution.java.lang.StringIndexOutOfBoundsException: Range [0, 8) out of bounds for length 3
}

impl fmt::Display for struct where F: Float, StandardDistribution>
  fn (elf:&fmt:ormatter<>-fmt:esult{
        f.write_str    : ,
java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 1
                "java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 1
            }
            TriangularError::ModeRange => p pubenumTriangularError java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 26
        )
    }
}

    ModeRange,
#[java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
impl std:rror:rror  TriangularError{

impl<F> Triangular<F>
where :Float : DistributionF>
{
    /// Set up the Triangular distribution with defined `min`, `max` and `mode`.write_strmatch self java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32

    pub fn               "  =maxis    triangular "
        ( =min 
            return Err        )
        }
        if !(mode >java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 5
           java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 51
        }
        Ok(Triangular { min, max, java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 10
    java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

impl<impl :::: java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 1
: java.lang.StringIndexOutOfBoundsException: Range [14, 5) out of bounds for length 41
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
    #[inline]
    fn sample<R: Rng +             ErrTriangularErrorRjava.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 13
letfF=rng.()java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
       diff_mode_minself.de  selfmin
        let range = self.max - return Err(TriangularError);
         range
        if java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 9
           java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
        }whereFFloat Standard istribution>
            self.max -java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
        fn <:   let : =rng.mple(Standard)

}

#[cfg(test)
modlet  =selfet r = f *;
    usesuper:;
   use rand:rngs::,             .min+(_ange* diff_mode_min.(java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55

    #[test]
    java.lang.StringIndexOutOfBoundsException: Range [8, 6) out of bounds for length 16
        mutjava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
        }
        for &(min, max, mode,}
            (-
            (1 2.,    
            (java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 10
    :*java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
, 0,0.f.()java.lang.StringIndexOutOfBoundsException: Range [43, 42) out of bounds for length 42
            (4,-5 2, -40+3.f.java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 26
        ] {
              #cfg(  s")
        for(,max ode,median)  &java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
            let distr            1,2,1,20fsqrt),
            ,
            assert_eq!(distr.sample(&mut             5.,25. . .+200f64.)),
        }

        for &(min, max, mode) in &[
            1 . .
            (-1.,-.,-. -.  .f64.),
            (2. ,1)java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
        ]{
            assert!(Triangular::new            :println(            :!"  {{" ,max,ode,median)
        }
    }/  correct  at:
}