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// Copyright 2016-2018 Mateusz Sieczko and other GilRs Developers
//
// Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or
// http://apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
// http://opensource.org/licenses/MIT>, at your option. This file may not be
// copied, modified, or distributed except according to those terms.

pub use gilrs_core::utils::*;

/// Like `(a: f32 / b).ceil()` but for integers.
pub fn ceil_div(a: u32, b: u32) -> u32 {
    if a == 0 {
        0
    } else {
        1 + ((a - 1) / b)
    }
}

pub fn clamp(x: f32, min: f32, max: f32) -> f32 {
    x.clamp(min, max)
}

#[cfg(path_separator = "backslash")]
macro_rules! PATH_SEPARATOR {
    () => {
        r"\"
    };
}

#[cfg(path_separator = "slash")]
macro_rules! PATH_SEPARATOR {
    () => {
        r"/"
    };
}

pub(crate) use PATH_SEPARATOR;

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn t_clamp() {
        assert_eq!(clamp(-1.0, 0.0, 1.0), 0.0);
        assert_eq!(clamp(0.5, 0.0, 1.0), 0.5);
        assert_eq!(clamp(2.0, 0.0, 1.0), 1.0);
    }
}