1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
/*
* // Copyright (c) Radzivon Bartoshyk 4/2025. All rights reserved.
* //
* // Redistribution and use in source and binary forms, with or without modification,
* // are permitted provided that the following conditions are met:
* //
* // 1. Redistributions of source code must retain the above copyright notice, this
* // list of conditions and the following disclaimer.
* //
* // 2. Redistributions in binary form must reproduce the above copyright notice,
* // this list of conditions and the following disclaimer in the documentation
* // and/or other materials provided with the distribution.
* //
* // 3. Neither the name of the copyright holder nor the names of its
* // contributors may be used to endorse or promote products derived from
* // this software without specific prior written permission.
* //
* // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
use crate::{ceil, ceilf, trunc, truncf};
/// Round to integer towards minus infinity
#[inline]
pub const fn floorf(x: f32) -> f32 {
if x.is_sign_negative() {
-ceilf(-x)
} else {
truncf(x)
}
}
/// Floors value
#[inline]
pub const fn floor(x: f64) -> f64 {
if x.is_sign_negative() {
-ceil(-x)
} else {
trunc(x)
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_floorf() {
assert_eq!(floorf(-1.0), -1.0);
assert_eq!(floorf(1.0), 1.0);
assert_eq!(floorf(0.0), 0.0);
assert_eq!(floorf(1.234211), 1.0);
assert_eq!(floorf(-1.234211), -2.0);
}
#[test]
fn test_floor() {
assert_eq!(floor(-1.0), -1.0);
assert_eq!(floor(1.0), 1.0);
assert_eq!(floor(0.0), 0.0);
assert_eq!(floor(1.234211), 1.0);
assert_eq!(floor(-1.234211), -2.0);
}
}