cgmath/benches/construction.rs

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// Copyright 2013-2014 The CGMath Developers. For a full listing of the authors,
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// refer to the Cargo.toml file at the top-level directory of this distribution.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
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#![feature(test)]
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extern crate cgmath;
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extern crate rand;
extern crate test;
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use rand::{IsaacRng, Rng};
use test::Bencher;
use cgmath::*;
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#[path = "common/macros.rs"]
#[macro_use]
mod macros;
fn bench_from_axis_angle<T: Rotation3<f32>>(bh: &mut Bencher) {
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const LEN: usize = 1 << 13;
let mut rng = IsaacRng::new_unseeded();
let axis: Vec<_> = (0..LEN).map(|_| rng.gen::<Vector3<f32>>()).collect();
let angle: Vec<_> = (0..LEN).map(|_| rng.gen::<Rad<f32>>()).collect();
let mut i = 0;
bh.iter(|| {
i = (i + 1) & (LEN - 1);
unsafe {
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let res: T =
Rotation3::from_axis_angle(*axis.get_unchecked(i), *angle.get_unchecked(i));
test::black_box(res)
}
})
}
#[bench]
fn _bench_quat_from_axisangle(bh: &mut Bencher) {
bench_from_axis_angle::<Quaternion<f32>>(bh)
}
#[bench]
fn _bench_rot3_from_axisangle(bh: &mut Bencher) {
bench_from_axis_angle::<Basis3<f32>>(bh)
}
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bench_construction!(
_bench_rot2_from_axisangle,
Basis2<f32>,
Basis2::from_angle[angle: Rad<f32>]
);
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bench_construction!(
_bench_quat_from_euler_angles,
Quaternion<f32>,
Quaternion::from[src: Euler<Rad<f32>>]
);
bench_construction!(
_bench_rot3_from_euler_angles,
Basis3<f32>,
Basis3::from[src: Euler<Rad<f32>>]
);