ruPRIM-host 0.1.1

ruPRIM CPU tensor primitives, reductions, indexing and SIMD kernels.
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
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
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224

use super::*;

// Integer comparison functions

fn compare_int<I64Cmp, U64Cmp>(
    lhs: HostTensor,
    rhs: HostTensor,
    out_dtype: BoolDType,
    i64_cmp: I64Cmp,
    u64_cmp: U64Cmp,
) -> HostTensor
where
    I64Cmp: Fn(i64, i64) -> bool,
    U64Cmp: Fn(u64, u64) -> bool,
{
    let (lhs, rhs) = crate::expand::broadcast_binary(lhs, rhs);

    match lhs.dtype() {
        DType::I64 => compare_typed(lhs, &rhs, out_dtype, i64_cmp),
        DType::U64 => compare_typed(lhs, &rhs, out_dtype, u64_cmp),
        DType::I32 => compare_typed(lhs, &rhs, out_dtype, |a: i32, b: i32| {
            i64_cmp(a as i64, b as i64)
        }),
        DType::I16 => compare_typed(lhs, &rhs, out_dtype, |a: i16, b: i16| {
            i64_cmp(a as i64, b as i64)
        }),
        DType::I8 => compare_typed(lhs, &rhs, out_dtype, |a: i8, b: i8| {
            i64_cmp(a as i64, b as i64)
        }),
        DType::U32 => compare_typed(lhs, &rhs, out_dtype, |a: u32, b: u32| {
            i64_cmp(a as i64, b as i64)
        }),
        DType::U16 => compare_typed(lhs, &rhs, out_dtype, |a: u16, b: u16| {
            i64_cmp(a as i64, b as i64)
        }),
        DType::U8 => compare_typed(lhs, &rhs, out_dtype, |a: u8, b: u8| {
            i64_cmp(a as i64, b as i64)
        }),
        other => panic!("compare_int: unsupported dtype {:?}", other),
    }
}

fn compare_int_elem<I64Cmp, U64Cmp>(
    lhs: HostTensor,
    i64_rhs: i64,
    u64_rhs: u64,
    out_dtype: BoolDType,
    i64_cmp: I64Cmp,
    u64_cmp: U64Cmp,
) -> HostTensor
where
    I64Cmp: Fn(i64, i64) -> bool,
    U64Cmp: Fn(u64, u64) -> bool,
{
    match lhs.dtype() {
        DType::I64 => compare_elem_typed(lhs, i64_rhs, out_dtype, i64_cmp),
        DType::U64 => compare_elem_typed(lhs, u64_rhs, out_dtype, u64_cmp),
        DType::I32 => compare_elem_typed(lhs, i64_rhs as i32, out_dtype, |a: i32, b: i32| {
            i64_cmp(a as i64, b as i64)
        }),
        DType::I16 => compare_elem_typed(lhs, i64_rhs as i16, out_dtype, |a: i16, b: i16| {
            i64_cmp(a as i64, b as i64)
        }),
        DType::I8 => compare_elem_typed(lhs, i64_rhs as i8, out_dtype, |a: i8, b: i8| {
            i64_cmp(a as i64, b as i64)
        }),
        DType::U32 => compare_elem_typed(lhs, i64_rhs as u32, out_dtype, |a: u32, b: u32| {
            i64_cmp(a as i64, b as i64)
        }),
        DType::U16 => compare_elem_typed(lhs, i64_rhs as u16, out_dtype, |a: u16, b: u16| {
            i64_cmp(a as i64, b as i64)
        }),
        DType::U8 => compare_elem_typed(lhs, i64_rhs as u8, out_dtype, |a: u8, b: u8| {
            i64_cmp(a as i64, b as i64)
        }),
        other => panic!("compare_int_elem: unsupported dtype {:?}", other),
    }
}

pub fn int_greater(lhs: HostTensor, rhs: HostTensor, out_dtype: BoolDType) -> HostTensor {
    compare_int(lhs, rhs, out_dtype, |a, b| a > b, |a, b| a > b)
}

pub fn int_greater_elem(
    lhs: HostTensor,
    i64_rhs: i64,
    u64_rhs: u64,
    out_dtype: BoolDType,
) -> HostTensor {
    compare_int_elem(lhs, i64_rhs, u64_rhs, out_dtype, |a, b| a > b, |a, b| a > b)
}

pub fn int_greater_equal(lhs: HostTensor, rhs: HostTensor, out_dtype: BoolDType) -> HostTensor {
    compare_int(lhs, rhs, out_dtype, |a, b| a >= b, |a, b| a >= b)
}

pub fn int_greater_equal_elem(
    lhs: HostTensor,
    i64_rhs: i64,
    u64_rhs: u64,
    out_dtype: BoolDType,
) -> HostTensor {
    compare_int_elem(
        lhs,
        i64_rhs,
        u64_rhs,
        out_dtype,
        |a, b| a >= b,
        |a, b| a >= b,
    )
}

pub fn int_lower(lhs: HostTensor, rhs: HostTensor, out_dtype: BoolDType) -> HostTensor {
    compare_int(lhs, rhs, out_dtype, |a, b| a < b, |a, b| a < b)
}

pub fn int_lower_elem(
    lhs: HostTensor,
    i64_rhs: i64,
    u64_rhs: u64,
    out_dtype: BoolDType,
) -> HostTensor {
    compare_int_elem(lhs, i64_rhs, u64_rhs, out_dtype, |a, b| a < b, |a, b| a < b)
}

pub fn int_lower_equal(lhs: HostTensor, rhs: HostTensor, out_dtype: BoolDType) -> HostTensor {
    compare_int(lhs, rhs, out_dtype, |a, b| a <= b, |a, b| a <= b)
}

pub fn int_lower_equal_elem(
    lhs: HostTensor,
    i64_rhs: i64,
    u64_rhs: u64,
    out_dtype: BoolDType,
) -> HostTensor {
    compare_int_elem(
        lhs,
        i64_rhs,
        u64_rhs,
        out_dtype,
        |a, b| a <= b,
        |a, b| a <= b,
    )
}

pub fn int_equal(lhs: HostTensor, rhs: HostTensor, out_dtype: BoolDType) -> HostTensor {
    compare_int(lhs, rhs, out_dtype, |a, b| a == b, |a, b| a == b)
}

pub fn int_equal_elem(
    lhs: HostTensor,
    i64_rhs: i64,
    u64_rhs: u64,
    out_dtype: BoolDType,
) -> HostTensor {
    compare_int_elem(
        lhs,
        i64_rhs,
        u64_rhs,
        out_dtype,
        |a, b| a == b,
        |a, b| a == b,
    )
}

pub fn int_not_equal(lhs: HostTensor, rhs: HostTensor, out_dtype: BoolDType) -> HostTensor {
    compare_int(lhs, rhs, out_dtype, |a, b| a != b, |a, b| a != b)
}

pub fn int_not_equal_elem(
    lhs: HostTensor,
    i64_rhs: i64,
    u64_rhs: u64,
    out_dtype: BoolDType,
) -> HostTensor {
    compare_int_elem(
        lhs,
        i64_rhs,
        u64_rhs,
        out_dtype,
        |a, b| a != b,
        |a, b| a != b,
    )
}

pub fn bool_not_equal(lhs: HostTensor, rhs: HostTensor, out_dtype: BoolDType) -> HostTensor {
    let (lhs, rhs) = crate::expand::broadcast_binary(lhs, rhs);
    let shape = lhs.layout().shape().clone();
    let lhs_data: &[u8] = lhs.bytes();
    let rhs_data: &[u8] = rhs.bytes();
    let result: Vec<u8> = match (
        lhs.layout().contiguous_offsets(),
        rhs.layout().contiguous_offsets(),
    ) {
        (Some((ls, le)), Some((rs, re))) => lhs_data[ls..le]
            .iter()
            .zip(&rhs_data[rs..re])
            .map(|(&a, &b)| if a != b { 1 } else { 0 })
            .collect(),
        _ => {
            let lhs = lhs.to_contiguous();
            let rhs = rhs.to_contiguous();
            lhs.bytes()
                .iter()
                .zip(rhs.bytes())
                .map(|(&a, &b)| if a != b { 1 } else { 0 })
                .collect()
        }
    };
    make_bool_tensor(result, shape, out_dtype)
}

pub fn bool_not_equal_elem(lhs: HostTensor, rhs: bool, out_dtype: BoolDType) -> HostTensor {
    let rhs_val: u8 = if rhs { 1 } else { 0 };
    let shape = lhs.layout().shape().clone();
    let lhs = lhs.to_contiguous();
    let data: &[u8] = lhs.bytes();
    let result: Vec<u8> = data
        .iter()
        .map(|&a| if a != rhs_val { 1 } else { 0 })
        .collect();
    make_bool_tensor(result, shape, out_dtype)
}