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
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
// Copyright © 2026 Mikhail Hogrefe
//
// This file is part of Malachite.
//
// Malachite is free software: you can redistribute it and/or modify it under the terms of the GNU
// Lesser General Public License (LGPL) as published by the Free Software Foundation; either version
// 3 of the License, or (at your option) any later version. See <https://www.gnu.org/licenses/>.
use crate::integer::Integer;
use crate::integer_vector::IntegerVector;
use core::ops::{Shl, ShlAssign};
// Shifts every element left by `bits`.
fn shl_ref<T: Copy>(v: &IntegerVector, bits: T) -> IntegerVector
where
for<'a> &'a Integer: Shl<T, Output = Integer>,
{
IntegerVector {
elements: v.elements.iter().map(|x| x << bits).collect(),
}
}
// Shifts every element left by `bits`, in place.
fn shl_assign<T: Copy>(v: &mut IntegerVector, bits: T)
where
Integer: ShlAssign<T>,
{
for x in &mut v.elements {
*x <<= bits;
}
}
macro_rules! impl_integer_vector_shl_unsigned {
($t:ident) => {
impl Shl<$t> for IntegerVector {
type Output = IntegerVector;
/// Left-shifts an [`IntegerVector`] (multiplies it by a power of 2), taking it by
/// value. Every element is shifted, and the dimension is unchanged.
///
/// $f(v, k) = 2^kv$.
///
/// # Worst-case complexity
/// $T(n, m, k) = O(n + km)$
///
/// $M(n, m, k) = O(n + km)$
///
/// where $T$ is time, $M$ is additional memory, $n$ is the total number of bits of the
/// elements, $m$ is `bits`, and $k$ is `self.dimension()`.
///
/// # Examples
/// See [here](super::shl#shl).
///
/// This is equivalent to `_fmpz_vec_scalar_mul_2exp` from `fmpz_vec/scalar.c`, FLINT
/// 3.6.0.
#[inline]
fn shl(mut self, bits: $t) -> IntegerVector {
self <<= bits;
self
}
}
impl Shl<$t> for &IntegerVector {
type Output = IntegerVector;
/// Left-shifts an [`IntegerVector`] (multiplies it by a power of 2), taking it by
/// reference. Every element is shifted, and the dimension is unchanged.
///
/// $f(v, k) = 2^kv$.
///
/// # Worst-case complexity
/// $T(n, m, k) = O(n + km)$
///
/// $M(n, m, k) = O(n + km)$
///
/// where $T$ is time, $M$ is additional memory, $n$ is the total number of bits of the
/// elements, $m$ is `bits`, and $k$ is `self.dimension()`.
///
/// # Examples
/// See [here](super::shl#shl).
///
/// This is equivalent to `_fmpz_vec_scalar_mul_2exp` from `fmpz_vec/scalar.c`, FLINT
/// 3.6.0.
#[inline]
fn shl(self, bits: $t) -> IntegerVector {
shl_ref(self, bits)
}
}
impl ShlAssign<$t> for IntegerVector {
/// Left-shifts an [`IntegerVector`] (multiplies it by a power of 2), in place. Every
/// element is shifted, and the dimension is unchanged.
///
/// $v \gets 2^kv$.
///
/// # Worst-case complexity
/// $T(n, m, k) = O(n + km)$
///
/// $M(n, m, k) = O(n + km)$
///
/// where $T$ is time, $M$ is additional memory, $n$ is the total number of bits of the
/// elements, $m$ is `bits`, and $k$ is `self.dimension()`.
///
/// # Examples
/// See [here](super::shl#shl_assign).
///
/// This is equivalent to `_fmpz_vec_scalar_mul_2exp` from `fmpz_vec/scalar.c`, FLINT
/// 3.6.0.
#[inline]
fn shl_assign(&mut self, bits: $t) {
shl_assign(self, bits);
}
}
};
}
apply_to_unsigneds!(impl_integer_vector_shl_unsigned);
macro_rules! impl_integer_vector_shl_signed {
($t:ident) => {
impl Shl<$t> for IntegerVector {
type Output = IntegerVector;
/// Left-shifts an [`IntegerVector`] (multiplies or divides it by a power of 2), taking
/// it by value. Every element is shifted, and the dimension is unchanged.
///
/// $f(v, k) = 2^kv$.
///
/// A negative `bits` shifts right, rounding every element down (toward negative
/// infinity); to round differently, use
/// [`entrywise_shl_round`](malachite_base::num::arithmetic::traits::EntrywiseShlRound).
///
/// # Worst-case complexity
/// $T(n, m, k) = O(n + km)$
///
/// $M(n, m, k) = O(n + km)$
///
/// where $T$ is time, $M$ is additional memory, $n$ is the total number of bits of the
/// elements, $m$ is `bits.unsigned_abs()`, and $k$ is `self.dimension()`.
///
/// # Examples
/// See [here](super::shl#shl).
#[inline]
fn shl(mut self, bits: $t) -> IntegerVector {
self <<= bits;
self
}
}
impl Shl<$t> for &IntegerVector {
type Output = IntegerVector;
/// Left-shifts an [`IntegerVector`] (multiplies or divides it by a power of 2), taking
/// it by reference. Every element is shifted, and the dimension is unchanged.
///
/// $f(v, k) = 2^kv$.
///
/// A negative `bits` shifts right, rounding every element down (toward negative
/// infinity); to round differently, use
/// [`entrywise_shl_round`](malachite_base::num::arithmetic::traits::EntrywiseShlRound).
///
/// # Worst-case complexity
/// $T(n, m, k) = O(n + km)$
///
/// $M(n, m, k) = O(n + km)$
///
/// where $T$ is time, $M$ is additional memory, $n$ is the total number of bits of the
/// elements, $m$ is `bits.unsigned_abs()`, and $k$ is `self.dimension()`.
///
/// # Examples
/// See [here](super::shl#shl).
#[inline]
fn shl(self, bits: $t) -> IntegerVector {
shl_ref(self, bits)
}
}
impl ShlAssign<$t> for IntegerVector {
/// Left-shifts an [`IntegerVector`] (multiplies or divides it by a power of 2), in
/// place. Every element is shifted, and the dimension is unchanged.
///
/// $v \gets 2^kv$.
///
/// A negative `bits` shifts right, rounding every element down (toward negative
/// infinity); to round differently, use
/// [`entrywise_shl_round`](malachite_base::num::arithmetic::traits::EntrywiseShlRound).
///
/// # Worst-case complexity
/// $T(n, m, k) = O(n + km)$
///
/// $M(n, m, k) = O(n + km)$
///
/// where $T$ is time, $M$ is additional memory, $n$ is the total number of bits of the
/// elements, $m$ is `bits.unsigned_abs()`, and $k$ is `self.dimension()`.
///
/// # Examples
/// See [here](super::shl#shl_assign).
#[inline]
fn shl_assign(&mut self, bits: $t) {
shl_assign(self, bits);
}
}
};
}
apply_to_signeds!(impl_integer_vector_shl_signed);