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rustc/src/libcollectionstest/bit/vec.rs
Angus Lees d9579d0f11 Imported Upstream version 1.1.0+dfsg1
2015-06-26 16:41:04 -06:00

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// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.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.
use std::collections::BitVec;
use std::u32;
#[test]
fn test_to_str() {
let zerolen = BitVec::new();
assert_eq!(format!("{:?}", zerolen), "");
let eightbits = BitVec::from_elem(8, false);
assert_eq!(format!("{:?}", eightbits), "00000000")
}
#[test]
fn test_0_elements() {
let act = BitVec::new();
let exp = Vec::new();
assert!(act.eq_vec(&exp));
assert!(act.none() && act.all());
}
#[test]
fn test_1_element() {
let mut act = BitVec::from_elem(1, false);
assert!(act.eq_vec(&[false]));
assert!(act.none() && !act.all());
act = BitVec::from_elem(1, true);
assert!(act.eq_vec(&[true]));
assert!(!act.none() && act.all());
}
#[test]
fn test_2_elements() {
let mut b = BitVec::from_elem(2, false);
b.set(0, true);
b.set(1, false);
assert_eq!(format!("{:?}", b), "10");
assert!(!b.none() && !b.all());
}
#[test]
fn test_10_elements() {
let mut act;
// all 0
act = BitVec::from_elem(10, false);
assert!((act.eq_vec(
&[false, false, false, false, false, false, false, false, false, false])));
assert!(act.none() && !act.all());
// all 1
act = BitVec::from_elem(10, true);
assert!((act.eq_vec(&[true, true, true, true, true, true, true, true, true, true])));
assert!(!act.none() && act.all());
// mixed
act = BitVec::from_elem(10, false);
act.set(0, true);
act.set(1, true);
act.set(2, true);
act.set(3, true);
act.set(4, true);
assert!((act.eq_vec(&[true, true, true, true, true, false, false, false, false, false])));
assert!(!act.none() && !act.all());
// mixed
act = BitVec::from_elem(10, false);
act.set(5, true);
act.set(6, true);
act.set(7, true);
act.set(8, true);
act.set(9, true);
assert!((act.eq_vec(&[false, false, false, false, false, true, true, true, true, true])));
assert!(!act.none() && !act.all());
// mixed
act = BitVec::from_elem(10, false);
act.set(0, true);
act.set(3, true);
act.set(6, true);
act.set(9, true);
assert!((act.eq_vec(&[true, false, false, true, false, false, true, false, false, true])));
assert!(!act.none() && !act.all());
}
#[test]
fn test_31_elements() {
let mut act;
// all 0
act = BitVec::from_elem(31, false);
assert!(act.eq_vec(
&[false, false, false, false, false, false, false, false, false, false, false,
false, false, false, false, false, false, false, false, false, false, false,
false, false, false, false, false, false, false, false, false]));
assert!(act.none() && !act.all());
// all 1
act = BitVec::from_elem(31, true);
assert!(act.eq_vec(
&[true, true, true, true, true, true, true, true, true, true, true, true, true,
true, true, true, true, true, true, true, true, true, true, true, true, true,
true, true, true, true, true]));
assert!(!act.none() && act.all());
// mixed
act = BitVec::from_elem(31, false);
act.set(0, true);
act.set(1, true);
act.set(2, true);
act.set(3, true);
act.set(4, true);
act.set(5, true);
act.set(6, true);
act.set(7, true);
assert!(act.eq_vec(
&[true, true, true, true, true, true, true, true, false, false, false, false, false,
false, false, false, false, false, false, false, false, false, false, false,
false, false, false, false, false, false, false]));
assert!(!act.none() && !act.all());
// mixed
act = BitVec::from_elem(31, false);
act.set(16, true);
act.set(17, true);
act.set(18, true);
act.set(19, true);
act.set(20, true);
act.set(21, true);
act.set(22, true);
act.set(23, true);
assert!(act.eq_vec(
&[false, false, false, false, false, false, false, false, false, false, false,
false, false, false, false, false, true, true, true, true, true, true, true, true,
false, false, false, false, false, false, false]));
assert!(!act.none() && !act.all());
// mixed
act = BitVec::from_elem(31, false);
act.set(24, true);
act.set(25, true);
act.set(26, true);
act.set(27, true);
act.set(28, true);
act.set(29, true);
act.set(30, true);
assert!(act.eq_vec(
&[false, false, false, false, false, false, false, false, false, false, false,
false, false, false, false, false, false, false, false, false, false, false,
false, false, true, true, true, true, true, true, true]));
assert!(!act.none() && !act.all());
// mixed
act = BitVec::from_elem(31, false);
act.set(3, true);
act.set(17, true);
act.set(30, true);
assert!(act.eq_vec(
&[false, false, false, true, false, false, false, false, false, false, false, false,
false, false, false, false, false, true, false, false, false, false, false, false,
false, false, false, false, false, false, true]));
assert!(!act.none() && !act.all());
}
#[test]
fn test_32_elements() {
let mut act;
// all 0
act = BitVec::from_elem(32, false);
assert!(act.eq_vec(
&[false, false, false, false, false, false, false, false, false, false, false,
false, false, false, false, false, false, false, false, false, false, false,
false, false, false, false, false, false, false, false, false, false]));
assert!(act.none() && !act.all());
// all 1
act = BitVec::from_elem(32, true);
assert!(act.eq_vec(
&[true, true, true, true, true, true, true, true, true, true, true, true, true,
true, true, true, true, true, true, true, true, true, true, true, true, true,
true, true, true, true, true, true]));
assert!(!act.none() && act.all());
// mixed
act = BitVec::from_elem(32, false);
act.set(0, true);
act.set(1, true);
act.set(2, true);
act.set(3, true);
act.set(4, true);
act.set(5, true);
act.set(6, true);
act.set(7, true);
assert!(act.eq_vec(
&[true, true, true, true, true, true, true, true, false, false, false, false, false,
false, false, false, false, false, false, false, false, false, false, false,
false, false, false, false, false, false, false, false]));
assert!(!act.none() && !act.all());
// mixed
act = BitVec::from_elem(32, false);
act.set(16, true);
act.set(17, true);
act.set(18, true);
act.set(19, true);
act.set(20, true);
act.set(21, true);
act.set(22, true);
act.set(23, true);
assert!(act.eq_vec(
&[false, false, false, false, false, false, false, false, false, false, false,
false, false, false, false, false, true, true, true, true, true, true, true, true,
false, false, false, false, false, false, false, false]));
assert!(!act.none() && !act.all());
// mixed
act = BitVec::from_elem(32, false);
act.set(24, true);
act.set(25, true);
act.set(26, true);
act.set(27, true);
act.set(28, true);
act.set(29, true);
act.set(30, true);
act.set(31, true);
assert!(act.eq_vec(
&[false, false, false, false, false, false, false, false, false, false, false,
false, false, false, false, false, false, false, false, false, false, false,
false, false, true, true, true, true, true, true, true, true]));
assert!(!act.none() && !act.all());
// mixed
act = BitVec::from_elem(32, false);
act.set(3, true);
act.set(17, true);
act.set(30, true);
act.set(31, true);
assert!(act.eq_vec(
&[false, false, false, true, false, false, false, false, false, false, false, false,
false, false, false, false, false, true, false, false, false, false, false, false,
false, false, false, false, false, false, true, true]));
assert!(!act.none() && !act.all());
}
#[test]
fn test_33_elements() {
let mut act;
// all 0
act = BitVec::from_elem(33, false);
assert!(act.eq_vec(
&[false, false, false, false, false, false, false, false, false, false, false,
false, false, false, false, false, false, false, false, false, false, false,
false, false, false, false, false, false, false, false, false, false, false]));
assert!(act.none() && !act.all());
// all 1
act = BitVec::from_elem(33, true);
assert!(act.eq_vec(
&[true, true, true, true, true, true, true, true, true, true, true, true, true,
true, true, true, true, true, true, true, true, true, true, true, true, true,
true, true, true, true, true, true, true]));
assert!(!act.none() && act.all());
// mixed
act = BitVec::from_elem(33, false);
act.set(0, true);
act.set(1, true);
act.set(2, true);
act.set(3, true);
act.set(4, true);
act.set(5, true);
act.set(6, true);
act.set(7, true);
assert!(act.eq_vec(
&[true, true, true, true, true, true, true, true, false, false, false, false, false,
false, false, false, false, false, false, false, false, false, false, false,
false, false, false, false, false, false, false, false, false]));
assert!(!act.none() && !act.all());
// mixed
act = BitVec::from_elem(33, false);
act.set(16, true);
act.set(17, true);
act.set(18, true);
act.set(19, true);
act.set(20, true);
act.set(21, true);
act.set(22, true);
act.set(23, true);
assert!(act.eq_vec(
&[false, false, false, false, false, false, false, false, false, false, false,
false, false, false, false, false, true, true, true, true, true, true, true, true,
false, false, false, false, false, false, false, false, false]));
assert!(!act.none() && !act.all());
// mixed
act = BitVec::from_elem(33, false);
act.set(24, true);
act.set(25, true);
act.set(26, true);
act.set(27, true);
act.set(28, true);
act.set(29, true);
act.set(30, true);
act.set(31, true);
assert!(act.eq_vec(
&[false, false, false, false, false, false, false, false, false, false, false,
false, false, false, false, false, false, false, false, false, false, false,
false, false, true, true, true, true, true, true, true, true, false]));
assert!(!act.none() && !act.all());
// mixed
act = BitVec::from_elem(33, false);
act.set(3, true);
act.set(17, true);
act.set(30, true);
act.set(31, true);
act.set(32, true);
assert!(act.eq_vec(
&[false, false, false, true, false, false, false, false, false, false, false, false,
false, false, false, false, false, true, false, false, false, false, false, false,
false, false, false, false, false, false, true, true, true]));
assert!(!act.none() && !act.all());
}
#[test]
fn test_equal_differing_sizes() {
let v0 = BitVec::from_elem(10, false);
let v1 = BitVec::from_elem(11, false);
assert!(v0 != v1);
}
#[test]
fn test_equal_greatly_differing_sizes() {
let v0 = BitVec::from_elem(10, false);
let v1 = BitVec::from_elem(110, false);
assert!(v0 != v1);
}
#[test]
fn test_equal_sneaky_small() {
let mut a = BitVec::from_elem(1, false);
a.set(0, true);
let mut b = BitVec::from_elem(1, true);
b.set(0, true);
assert_eq!(a, b);
}
#[test]
fn test_equal_sneaky_big() {
let mut a = BitVec::from_elem(100, false);
for i in 0..100 {
a.set(i, true);
}
let mut b = BitVec::from_elem(100, true);
for i in 0..100 {
b.set(i, true);
}
assert_eq!(a, b);
}
#[test]
fn test_from_bytes() {
let bit_vec = BitVec::from_bytes(&[0b10110110, 0b00000000, 0b11111111]);
let str = concat!("10110110", "00000000", "11111111");
assert_eq!(format!("{:?}", bit_vec), str);
}
#[test]
fn test_to_bytes() {
let mut bv = BitVec::from_elem(3, true);
bv.set(1, false);
assert_eq!(bv.to_bytes(), [0b10100000]);
let mut bv = BitVec::from_elem(9, false);
bv.set(2, true);
bv.set(8, true);
assert_eq!(bv.to_bytes(), [0b00100000, 0b10000000]);
}
#[test]
fn test_from_bools() {
let bools = vec![true, false, true, true];
let bit_vec: BitVec = bools.iter().map(|n| *n).collect();
assert_eq!(format!("{:?}", bit_vec), "1011");
}
#[test]
fn test_to_bools() {
let bools = vec![false, false, true, false, false, true, true, false];
assert_eq!(BitVec::from_bytes(&[0b00100110]).iter().collect::<Vec<bool>>(), bools);
}
#[test]
fn test_bit_vec_iterator() {
let bools = vec![true, false, true, true];
let bit_vec: BitVec = bools.iter().map(|n| *n).collect();
assert_eq!(bit_vec.iter().collect::<Vec<bool>>(), bools);
let long: Vec<_> = (0..10000).map(|i| i % 2 == 0).collect();
let bit_vec: BitVec = long.iter().map(|n| *n).collect();
assert_eq!(bit_vec.iter().collect::<Vec<bool>>(), long)
}
#[test]
fn test_small_difference() {
let mut b1 = BitVec::from_elem(3, false);
let mut b2 = BitVec::from_elem(3, false);
b1.set(0, true);
b1.set(1, true);
b2.set(1, true);
b2.set(2, true);
assert!(b1.difference(&b2));
assert!(b1[0]);
assert!(!b1[1]);
assert!(!b1[2]);
}
#[test]
fn test_big_difference() {
let mut b1 = BitVec::from_elem(100, false);
let mut b2 = BitVec::from_elem(100, false);
b1.set(0, true);
b1.set(40, true);
b2.set(40, true);
b2.set(80, true);
assert!(b1.difference(&b2));
assert!(b1[0]);
assert!(!b1[40]);
assert!(!b1[80]);
}
#[test]
fn test_small_clear() {
let mut b = BitVec::from_elem(14, true);
assert!(!b.none() && b.all());
b.clear();
assert!(b.none() && !b.all());
}
#[test]
fn test_big_clear() {
let mut b = BitVec::from_elem(140, true);
assert!(!b.none() && b.all());
b.clear();
assert!(b.none() && !b.all());
}
#[test]
fn test_bit_vec_lt() {
let mut a = BitVec::from_elem(5, false);
let mut b = BitVec::from_elem(5, false);
assert!(!(a < b) && !(b < a));
b.set(2, true);
assert!(a < b);
a.set(3, true);
assert!(a < b);
a.set(2, true);
assert!(!(a < b) && b < a);
b.set(0, true);
assert!(a < b);
}
#[test]
fn test_ord() {
let mut a = BitVec::from_elem(5, false);
let mut b = BitVec::from_elem(5, false);
assert!(a <= b && a >= b);
a.set(1, true);
assert!(a > b && a >= b);
assert!(b < a && b <= a);
b.set(1, true);
b.set(2, true);
assert!(b > a && b >= a);
assert!(a < b && a <= b);
}
#[test]
fn test_small_bit_vec_tests() {
let v = BitVec::from_bytes(&[0]);
assert!(!v.all());
assert!(!v.any());
assert!(v.none());
let v = BitVec::from_bytes(&[0b00010100]);
assert!(!v.all());
assert!(v.any());
assert!(!v.none());
let v = BitVec::from_bytes(&[0xFF]);
assert!(v.all());
assert!(v.any());
assert!(!v.none());
}
#[test]
fn test_big_bit_vec_tests() {
let v = BitVec::from_bytes(&[ // 88 bits
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0]);
assert!(!v.all());
assert!(!v.any());
assert!(v.none());
let v = BitVec::from_bytes(&[ // 88 bits
0, 0, 0b00010100, 0,
0, 0, 0, 0b00110100,
0, 0, 0]);
assert!(!v.all());
assert!(v.any());
assert!(!v.none());
let v = BitVec::from_bytes(&[ // 88 bits
0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF]);
assert!(v.all());
assert!(v.any());
assert!(!v.none());
}
#[test]
fn test_bit_vec_push_pop() {
let mut s = BitVec::from_elem(5 * u32::BITS - 2, false);
assert_eq!(s.len(), 5 * u32::BITS - 2);
assert_eq!(s[5 * u32::BITS - 3], false);
s.push(true);
s.push(true);
assert_eq!(s[5 * u32::BITS - 2], true);
assert_eq!(s[5 * u32::BITS - 1], true);
// Here the internal vector will need to be extended
s.push(false);
assert_eq!(s[5 * u32::BITS], false);
s.push(false);
assert_eq!(s[5 * u32::BITS + 1], false);
assert_eq!(s.len(), 5 * u32::BITS + 2);
// Pop it all off
assert_eq!(s.pop(), Some(false));
assert_eq!(s.pop(), Some(false));
assert_eq!(s.pop(), Some(true));
assert_eq!(s.pop(), Some(true));
assert_eq!(s.len(), 5 * u32::BITS - 2);
}
#[test]
fn test_bit_vec_truncate() {
let mut s = BitVec::from_elem(5 * u32::BITS, true);
assert_eq!(s, BitVec::from_elem(5 * u32::BITS, true));
assert_eq!(s.len(), 5 * u32::BITS);
s.truncate(4 * u32::BITS);
assert_eq!(s, BitVec::from_elem(4 * u32::BITS, true));
assert_eq!(s.len(), 4 * u32::BITS);
// Truncating to a size > s.len() should be a noop
s.truncate(5 * u32::BITS);
assert_eq!(s, BitVec::from_elem(4 * u32::BITS, true));
assert_eq!(s.len(), 4 * u32::BITS);
s.truncate(3 * u32::BITS - 10);
assert_eq!(s, BitVec::from_elem(3 * u32::BITS - 10, true));
assert_eq!(s.len(), 3 * u32::BITS - 10);
s.truncate(0);
assert_eq!(s, BitVec::from_elem(0, true));
assert_eq!(s.len(), 0);
}
#[test]
fn test_bit_vec_reserve() {
let mut s = BitVec::from_elem(5 * u32::BITS, true);
// Check capacity
assert!(s.capacity() >= 5 * u32::BITS);
s.reserve(2 * u32::BITS);
assert!(s.capacity() >= 7 * u32::BITS);
s.reserve(7 * u32::BITS);
assert!(s.capacity() >= 12 * u32::BITS);
s.reserve_exact(7 * u32::BITS);
assert!(s.capacity() >= 12 * u32::BITS);
s.reserve(7 * u32::BITS + 1);
assert!(s.capacity() >= 12 * u32::BITS + 1);
// Check that length hasn't changed
assert_eq!(s.len(), 5 * u32::BITS);
s.push(true);
s.push(false);
s.push(true);
assert_eq!(s[5 * u32::BITS - 1], true);
assert_eq!(s[5 * u32::BITS - 0], true);
assert_eq!(s[5 * u32::BITS + 1], false);
assert_eq!(s[5 * u32::BITS + 2], true);
}
#[test]
fn test_bit_vec_grow() {
let mut bit_vec = BitVec::from_bytes(&[0b10110110, 0b00000000, 0b10101010]);
bit_vec.grow(32, true);
assert_eq!(bit_vec, BitVec::from_bytes(&[0b10110110, 0b00000000, 0b10101010,
0xFF, 0xFF, 0xFF, 0xFF]));
bit_vec.grow(64, false);
assert_eq!(bit_vec, BitVec::from_bytes(&[0b10110110, 0b00000000, 0b10101010,
0xFF, 0xFF, 0xFF, 0xFF, 0, 0, 0, 0, 0, 0, 0, 0]));
bit_vec.grow(16, true);
assert_eq!(bit_vec, BitVec::from_bytes(&[0b10110110, 0b00000000, 0b10101010,
0xFF, 0xFF, 0xFF, 0xFF, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF]));
}
#[test]
fn test_bit_vec_extend() {
let mut bit_vec = BitVec::from_bytes(&[0b10110110, 0b00000000, 0b11111111]);
let ext = BitVec::from_bytes(&[0b01001001, 0b10010010, 0b10111101]);
bit_vec.extend(ext.iter());
assert_eq!(bit_vec, BitVec::from_bytes(&[0b10110110, 0b00000000, 0b11111111,
0b01001001, 0b10010010, 0b10111101]));
}
#[test]
fn test_bit_vec_append() {
// Append to BitVec that holds a multiple of u32::BITS bits
let mut a = BitVec::from_bytes(&[0b10100000, 0b00010010, 0b10010010, 0b00110011]);
let mut b = BitVec::new();
b.push(false);
b.push(true);
b.push(true);
a.append(&mut b);
assert_eq!(a.len(), 35);
assert_eq!(b.len(), 0);
assert!(b.capacity() >= 3);
assert!(a.eq_vec(&[true, false, true, false, false, false, false, false,
false, false, false, true, false, false, true, false,
true, false, false, true, false, false, true, false,
false, false, true, true, false, false, true, true,
false, true, true]));
// Append to arbitrary BitVec
let mut a = BitVec::new();
a.push(true);
a.push(false);
let mut b = BitVec::from_bytes(&[0b10100000, 0b00010010, 0b10010010, 0b00110011, 0b10010101]);
a.append(&mut b);
assert_eq!(a.len(), 42);
assert_eq!(b.len(), 0);
assert!(b.capacity() >= 40);
assert!(a.eq_vec(&[true, false, true, false, true, false, false, false,
false, false, false, false, false, true, false, false,
true, false, true, false, false, true, false, false,
true, false, false, false, true, true, false, false,
true, true, true, false, false, true, false, true,
false, true]));
// Append to empty BitVec
let mut a = BitVec::new();
let mut b = BitVec::from_bytes(&[0b10100000, 0b00010010, 0b10010010, 0b00110011, 0b10010101]);
a.append(&mut b);
assert_eq!(a.len(), 40);
assert_eq!(b.len(), 0);
assert!(b.capacity() >= 40);
assert!(a.eq_vec(&[true, false, true, false, false, false, false, false,
false, false, false, true, false, false, true, false,
true, false, false, true, false, false, true, false,
false, false, true, true, false, false, true, true,
true, false, false, true, false, true, false, true]));
// Append empty BitVec
let mut a = BitVec::from_bytes(&[0b10100000, 0b00010010, 0b10010010, 0b00110011, 0b10010101]);
let mut b = BitVec::new();
a.append(&mut b);
assert_eq!(a.len(), 40);
assert_eq!(b.len(), 0);
assert!(a.eq_vec(&[true, false, true, false, false, false, false, false,
false, false, false, true, false, false, true, false,
true, false, false, true, false, false, true, false,
false, false, true, true, false, false, true, true,
true, false, false, true, false, true, false, true]));
}
#[test]
fn test_bit_vec_split_off() {
// Split at 0
let mut a = BitVec::new();
a.push(true);
a.push(false);
a.push(false);
a.push(true);
let b = a.split_off(0);
assert_eq!(a.len(), 0);
assert_eq!(b.len(), 4);
assert!(b.eq_vec(&[true, false, false, true]));
// Split at last bit
a.truncate(0);
a.push(true);
a.push(false);
a.push(false);
a.push(true);
let b = a.split_off(4);
assert_eq!(a.len(), 4);
assert_eq!(b.len(), 0);
assert!(a.eq_vec(&[true, false, false, true]));
// Split at block boundary
let mut a = BitVec::from_bytes(&[0b10100000, 0b00010010, 0b10010010, 0b00110011, 0b11110011]);
let b = a.split_off(32);
assert_eq!(a.len(), 32);
assert_eq!(b.len(), 8);
assert!(a.eq_vec(&[true, false, true, false, false, false, false, false,
false, false, false, true, false, false, true, false,
true, false, false, true, false, false, true, false,
false, false, true, true, false, false, true, true]));
assert!(b.eq_vec(&[true, true, true, true, false, false, true, true]));
// Don't split at block boundary
let mut a = BitVec::from_bytes(&[0b10100000, 0b00010010, 0b10010010, 0b00110011,
0b01101011, 0b10101101]);
let b = a.split_off(13);
assert_eq!(a.len(), 13);
assert_eq!(b.len(), 35);
assert!(a.eq_vec(&[true, false, true, false, false, false, false, false,
false, false, false, true, false]));
assert!(b.eq_vec(&[false, true, false, true, false, false, true, false,
false, true, false, false, false, true, true, false,
false, true, true, false, true, true, false, true,
false, true, true, true, false, true, false, true,
true, false, true]));
}
mod bench {
use std::collections::BitVec;
use std::u32;
use std::__rand::{Rng, thread_rng, ThreadRng};
use test::{Bencher, black_box};
const BENCH_BITS : usize = 1 << 14;
fn rng() -> ThreadRng {
thread_rng()
}
#[bench]
fn bench_usize_small(b: &mut Bencher) {
let mut r = rng();
let mut bit_vec = 0 as usize;
b.iter(|| {
for _ in 0..100 {
bit_vec |= 1 << ((r.next_u32() as usize) % u32::BITS);
}
black_box(&bit_vec);
});
}
#[bench]
fn bench_bit_set_big_fixed(b: &mut Bencher) {
let mut r = rng();
let mut bit_vec = BitVec::from_elem(BENCH_BITS, false);
b.iter(|| {
for _ in 0..100 {
bit_vec.set((r.next_u32() as usize) % BENCH_BITS, true);
}
black_box(&bit_vec);
});
}
#[bench]
fn bench_bit_set_big_variable(b: &mut Bencher) {
let mut r = rng();
let mut bit_vec = BitVec::from_elem(BENCH_BITS, false);
b.iter(|| {
for _ in 0..100 {
bit_vec.set((r.next_u32() as usize) % BENCH_BITS, r.gen());
}
black_box(&bit_vec);
});
}
#[bench]
fn bench_bit_set_small(b: &mut Bencher) {
let mut r = rng();
let mut bit_vec = BitVec::from_elem(u32::BITS, false);
b.iter(|| {
for _ in 0..100 {
bit_vec.set((r.next_u32() as usize) % u32::BITS, true);
}
black_box(&bit_vec);
});
}
#[bench]
fn bench_bit_vec_big_union(b: &mut Bencher) {
let mut b1 = BitVec::from_elem(BENCH_BITS, false);
let b2 = BitVec::from_elem(BENCH_BITS, false);
b.iter(|| {
b1.union(&b2)
})
}
#[bench]
fn bench_bit_vec_small_iter(b: &mut Bencher) {
let bit_vec = BitVec::from_elem(u32::BITS, false);
b.iter(|| {
let mut sum = 0;
for _ in 0..10 {
for pres in &bit_vec {
sum += pres as usize;
}
}
sum
})
}
#[bench]
fn bench_bit_vec_big_iter(b: &mut Bencher) {
let bit_vec = BitVec::from_elem(BENCH_BITS, false);
b.iter(|| {
let mut sum = 0;
for pres in &bit_vec {
sum += pres as usize;
}
sum
})
}
}
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