widebits 0.0.1

An experimental bit sequence library with bitwise operations and SIMD acceleration.
Documentation 
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

#[cfg(test)]
mod binary_op_tests;

mod avx2;
mod scalar;

use crate::WideBits;

impl WideBits {
    #[inline]
    pub fn and(&self, rhs: &Self) -> Self {
        #[cfg(target_arch = "x86_64")]
        {
            if std::arch::is_x86_feature_detected!("avx2") {
                // SAFETY: runtime-gated by AVX2 feature detection.
                return unsafe { self.and_avx2(rhs) };
            }
        }

        self.and_scalar(rhs)
    }

    #[inline]
    pub fn and_assign(&mut self, rhs: &Self) {
        #[cfg(target_arch = "x86_64")]
        {
            if std::arch::is_x86_feature_detected!("avx2") {
                // SAFETY: runtime-gated by AVX2 feature detection.
                unsafe { self.and_assign_avx2(rhs) };
                return;
            }
        }

        self.and_assign_scalar(rhs);
    }

    #[inline]
    pub fn or(&self, rhs: &Self) -> Self {
        #[cfg(target_arch = "x86_64")]
        {
            if std::arch::is_x86_feature_detected!("avx2") {
                // SAFETY: runtime-gated by AVX2 feature detection.
                return unsafe { self.or_avx2(rhs) };
            }
        }

        self.or_scalar(rhs)
    }

    #[inline]
    pub fn or_assign(&mut self, rhs: &Self) {
        #[cfg(target_arch = "x86_64")]
        {
            if std::arch::is_x86_feature_detected!("avx2") {
                // SAFETY: runtime-gated by AVX2 feature detection.
                unsafe { self.or_assign_avx2(rhs) };
                return;
            }
        }

        self.or_assign_scalar(rhs);
    }

    #[inline]
    pub fn xor(&self, rhs: &Self) -> Self {
        #[cfg(target_arch = "x86_64")]
        {
            if std::arch::is_x86_feature_detected!("avx2") {
                // SAFETY: runtime-gated by AVX2 feature detection.
                return unsafe { self.xor_avx2(rhs) };
            }
        }

        self.xor_scalar(rhs)
    }

    #[inline]
    pub fn xor_assign(&mut self, rhs: &Self) {
        #[cfg(target_arch = "x86_64")]
        {
            if std::arch::is_x86_feature_detected!("avx2") {
                // SAFETY: runtime-gated by AVX2 feature detection.
                unsafe { self.xor_assign_avx2(rhs) };
                return;
            }
        }

        self.xor_assign_scalar(rhs);
    }

    #[inline]
    pub fn andnot(&self, rhs: &Self) -> Self {
        #[cfg(target_arch = "x86_64")]
        {
            if std::arch::is_x86_feature_detected!("avx2") {
                return unsafe { self.andnot_avx2(rhs) };
            }
        }

        self.andnot_scalar(rhs)
    }

    #[inline]
    pub fn andnot_assign(&mut self, rhs: &Self) {
        #[cfg(target_arch = "x86_64")]
        {
            if std::arch::is_x86_feature_detected!("avx2") {
                unsafe { self.andnot_assign_avx2(rhs) };
                return;
            }
        }

        self.andnot_assign_scalar(rhs);
    }
}