/
mod.rs
400 lines (335 loc) · 14.3 KB
/
mod.rs
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
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
// Copyright 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 core::convert::TryFrom;
use core::cmp::PartialEq;
use core::fmt::Debug;
use core::marker::Copy;
use core::ops::{Add, Sub, Mul, Div, Rem};
use core::option::Option;
use core::option::Option::{Some, None};
#[macro_use]
mod int_macros;
mod i8;
mod i16;
mod i32;
mod i64;
#[macro_use]
mod uint_macros;
mod u8;
mod u16;
mod u32;
mod u64;
mod flt2dec;
mod dec2flt;
mod bignum;
/// Helper function for testing numeric operations
pub fn test_num<T>(ten: T, two: T) where
T: PartialEq
+ Add<Output=T> + Sub<Output=T>
+ Mul<Output=T> + Div<Output=T>
+ Rem<Output=T> + Debug
+ Copy
{
assert_eq!(ten.add(two), ten + two);
assert_eq!(ten.sub(two), ten - two);
assert_eq!(ten.mul(two), ten * two);
assert_eq!(ten.div(two), ten / two);
assert_eq!(ten.rem(two), ten % two);
}
#[test]
fn from_str_issue7588() {
let u : Option<u8> = u8::from_str_radix("1000", 10).ok();
assert_eq!(u, None);
let s : Option<i16> = i16::from_str_radix("80000", 10).ok();
assert_eq!(s, None);
}
#[test]
fn test_int_from_str_overflow() {
let mut i8_val: i8 = 127;
assert_eq!("127".parse::<i8>().ok(), Some(i8_val));
assert_eq!("128".parse::<i8>().ok(), None);
i8_val = i8_val.wrapping_add(1);
assert_eq!("-128".parse::<i8>().ok(), Some(i8_val));
assert_eq!("-129".parse::<i8>().ok(), None);
let mut i16_val: i16 = 32_767;
assert_eq!("32767".parse::<i16>().ok(), Some(i16_val));
assert_eq!("32768".parse::<i16>().ok(), None);
i16_val = i16_val.wrapping_add(1);
assert_eq!("-32768".parse::<i16>().ok(), Some(i16_val));
assert_eq!("-32769".parse::<i16>().ok(), None);
let mut i32_val: i32 = 2_147_483_647;
assert_eq!("2147483647".parse::<i32>().ok(), Some(i32_val));
assert_eq!("2147483648".parse::<i32>().ok(), None);
i32_val = i32_val.wrapping_add(1);
assert_eq!("-2147483648".parse::<i32>().ok(), Some(i32_val));
assert_eq!("-2147483649".parse::<i32>().ok(), None);
let mut i64_val: i64 = 9_223_372_036_854_775_807;
assert_eq!("9223372036854775807".parse::<i64>().ok(), Some(i64_val));
assert_eq!("9223372036854775808".parse::<i64>().ok(), None);
i64_val = i64_val.wrapping_add(1);
assert_eq!("-9223372036854775808".parse::<i64>().ok(), Some(i64_val));
assert_eq!("-9223372036854775809".parse::<i64>().ok(), None);
}
#[test]
fn test_leading_plus() {
assert_eq!("+127".parse::<u8>().ok(), Some(127));
assert_eq!("+9223372036854775807".parse::<i64>().ok(), Some(9223372036854775807));
}
#[test]
fn test_invalid() {
assert_eq!("--129".parse::<i8>().ok(), None);
assert_eq!("++129".parse::<i8>().ok(), None);
assert_eq!("Съешь".parse::<u8>().ok(), None);
}
#[test]
fn test_empty() {
assert_eq!("-".parse::<i8>().ok(), None);
assert_eq!("+".parse::<i8>().ok(), None);
assert_eq!("".parse::<u8>().ok(), None);
}
macro_rules! test_impl_from {
($fn_name: ident, $Small: ty, $Large: ty) => {
#[test]
fn $fn_name() {
let small_max = <$Small>::max_value();
let small_min = <$Small>::min_value();
let large_max: $Large = small_max.into();
let large_min: $Large = small_min.into();
assert_eq!(large_max as $Small, small_max);
assert_eq!(large_min as $Small, small_min);
}
}
}
// Unsigned -> Unsigned
test_impl_from! { test_u8u16, u8, u16 }
test_impl_from! { test_u8u32, u8, u32 }
test_impl_from! { test_u8u64, u8, u64 }
test_impl_from! { test_u8usize, u8, usize }
test_impl_from! { test_u16u32, u16, u32 }
test_impl_from! { test_u16u64, u16, u64 }
test_impl_from! { test_u32u64, u32, u64 }
// Signed -> Signed
test_impl_from! { test_i8i16, i8, i16 }
test_impl_from! { test_i8i32, i8, i32 }
test_impl_from! { test_i8i64, i8, i64 }
test_impl_from! { test_i8isize, i8, isize }
test_impl_from! { test_i16i32, i16, i32 }
test_impl_from! { test_i16i64, i16, i64 }
test_impl_from! { test_i32i64, i32, i64 }
// Unsigned -> Signed
test_impl_from! { test_u8i16, u8, i16 }
test_impl_from! { test_u8i32, u8, i32 }
test_impl_from! { test_u8i64, u8, i64 }
test_impl_from! { test_u16i32, u16, i32 }
test_impl_from! { test_u16i64, u16, i64 }
test_impl_from! { test_u32i64, u32, i64 }
// Signed -> Float
test_impl_from! { test_i8f32, i8, f32 }
test_impl_from! { test_i8f64, i8, f64 }
test_impl_from! { test_i16f32, i16, f32 }
test_impl_from! { test_i16f64, i16, f64 }
test_impl_from! { test_i32f64, i32, f64 }
// Unsigned -> Float
test_impl_from! { test_u8f32, u8, f32 }
test_impl_from! { test_u8f64, u8, f64 }
test_impl_from! { test_u16f32, u16, f32 }
test_impl_from! { test_u16f64, u16, f64 }
test_impl_from! { test_u32f64, u32, f64 }
// Float -> Float
#[test]
fn test_f32f64() {
use core::f32;
let max: f64 = f32::MAX.into();
assert_eq!(max as f32, f32::MAX);
assert!(max.is_normal());
let min: f64 = f32::MIN.into();
assert_eq!(min as f32, f32::MIN);
assert!(min.is_normal());
let min_positive: f64 = f32::MIN_POSITIVE.into();
assert_eq!(min_positive as f32, f32::MIN_POSITIVE);
assert!(min_positive.is_normal());
let epsilon: f64 = f32::EPSILON.into();
assert_eq!(epsilon as f32, f32::EPSILON);
assert!(epsilon.is_normal());
let zero: f64 = (0.0f32).into();
assert_eq!(zero as f32, 0.0f32);
assert!(zero.is_sign_positive());
let neg_zero: f64 = (-0.0f32).into();
assert_eq!(neg_zero as f32, -0.0f32);
assert!(neg_zero.is_sign_negative());
let infinity: f64 = f32::INFINITY.into();
assert_eq!(infinity as f32, f32::INFINITY);
assert!(infinity.is_infinite());
assert!(infinity.is_sign_positive());
let neg_infinity: f64 = f32::NEG_INFINITY.into();
assert_eq!(neg_infinity as f32, f32::NEG_INFINITY);
assert!(neg_infinity.is_infinite());
assert!(neg_infinity.is_sign_negative());
let nan: f64 = f32::NAN.into();
assert!(nan.is_nan());
}
macro_rules! test_impl_try_from_always_ok {
($fn_name:ident, $source:ty, $target: ty) => {
#[test]
fn $fn_name() {
let max = <$source>::max_value();
let min = <$source>::min_value();
let zero: $source = 0;
assert_eq!(<$target as TryFrom<$source>>::try_from(max).unwrap(),
max as $target);
assert_eq!(<$target as TryFrom<$source>>::try_from(min).unwrap(),
min as $target);
assert_eq!(<$target as TryFrom<$source>>::try_from(zero).unwrap(),
zero as $target);
}
}
}
test_impl_try_from_always_ok! { test_try_u8u8, u8, u8 }
test_impl_try_from_always_ok! { test_try_u8u16, u8, u16 }
test_impl_try_from_always_ok! { test_try_u8u32, u8, u32 }
test_impl_try_from_always_ok! { test_try_u8u64, u8, u64 }
test_impl_try_from_always_ok! { test_try_u8i16, u8, i16 }
test_impl_try_from_always_ok! { test_try_u8i32, u8, i32 }
test_impl_try_from_always_ok! { test_try_u8i64, u8, i64 }
test_impl_try_from_always_ok! { test_try_u16u16, u16, u16 }
test_impl_try_from_always_ok! { test_try_u16u32, u16, u32 }
test_impl_try_from_always_ok! { test_try_u16u64, u16, u64 }
test_impl_try_from_always_ok! { test_try_u16i32, u16, i32 }
test_impl_try_from_always_ok! { test_try_u16i64, u16, i64 }
test_impl_try_from_always_ok! { test_try_u32u32, u32, u32 }
test_impl_try_from_always_ok! { test_try_u32u64, u32, u64 }
test_impl_try_from_always_ok! { test_try_u32i64, u32, i64 }
test_impl_try_from_always_ok! { test_try_u64u64, u64, u64 }
test_impl_try_from_always_ok! { test_try_i8i8, i8, i8 }
test_impl_try_from_always_ok! { test_try_i8i16, i8, i16 }
test_impl_try_from_always_ok! { test_try_i8i32, i8, i32 }
test_impl_try_from_always_ok! { test_try_i8i64, i8, i64 }
test_impl_try_from_always_ok! { test_try_i16i16, i16, i16 }
test_impl_try_from_always_ok! { test_try_i16i32, i16, i32 }
test_impl_try_from_always_ok! { test_try_i16i64, i16, i64 }
test_impl_try_from_always_ok! { test_try_i32i32, i32, i32 }
test_impl_try_from_always_ok! { test_try_i32i64, i32, i64 }
test_impl_try_from_always_ok! { test_try_i64i64, i64, i64 }
macro_rules! test_impl_try_from_signed_to_unsigned_upper_ok {
($fn_name:ident, $source:ty, $target:ty) => {
#[test]
fn $fn_name() {
let max = <$source>::max_value();
let min = <$source>::min_value();
let zero: $source = 0;
let neg_one: $source = -1;
assert_eq!(<$target as TryFrom<$source>>::try_from(max).unwrap(),
max as $target);
assert!(<$target as TryFrom<$source>>::try_from(min).is_err());
assert_eq!(<$target as TryFrom<$source>>::try_from(zero).unwrap(),
zero as $target);
assert!(<$target as TryFrom<$source>>::try_from(neg_one).is_err());
}
}
}
test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i8u8, i8, u8 }
test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i8u16, i8, u16 }
test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i8u32, i8, u32 }
test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i8u64, i8, u64 }
test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i16u16, i16, u16 }
test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i16u32, i16, u32 }
test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i16u64, i16, u64 }
test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i32u32, i32, u32 }
test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i32u64, i32, u64 }
test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i64u64, i64, u64 }
macro_rules! test_impl_try_from_unsigned_to_signed_upper_err {
($fn_name:ident, $source:ty, $target:ty) => {
#[test]
fn $fn_name() {
let max = <$source>::max_value();
let min = <$source>::min_value();
let zero: $source = 0;
assert!(<$target as TryFrom<$source>>::try_from(max).is_err());
assert_eq!(<$target as TryFrom<$source>>::try_from(min).unwrap(),
min as $target);
assert_eq!(<$target as TryFrom<$source>>::try_from(zero).unwrap(),
zero as $target);
}
}
}
test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u8i8, u8, i8 }
test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u16i8, u16, i8 }
test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u16i16, u16, i16 }
test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u32i8, u32, i8 }
test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u32i16, u32, i16 }
test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u32i32, u32, i32 }
test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u64i8, u64, i8 }
test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u64i16, u64, i16 }
test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u64i32, u64, i32 }
test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u64i64, u64, i64 }
macro_rules! test_impl_try_from_same_sign_err {
($fn_name:ident, $source:ty, $target:ty) => {
#[test]
fn $fn_name() {
let max = <$source>::max_value();
let min = <$source>::min_value();
let zero: $source = 0;
let t_max = <$target>::max_value();
let t_min = <$target>::min_value();
assert!(<$target as TryFrom<$source>>::try_from(max).is_err());
if min != 0 {
assert!(<$target as TryFrom<$source>>::try_from(min).is_err());
}
assert_eq!(<$target as TryFrom<$source>>::try_from(zero).unwrap(),
zero as $target);
assert_eq!(<$target as TryFrom<$source>>::try_from(t_max as $source)
.unwrap(),
t_max as $target);
assert_eq!(<$target as TryFrom<$source>>::try_from(t_min as $source)
.unwrap(),
t_min as $target);
}
}
}
test_impl_try_from_same_sign_err! { test_try_u16u8, u16, u8 }
test_impl_try_from_same_sign_err! { test_try_u32u8, u32, u8 }
test_impl_try_from_same_sign_err! { test_try_u32u16, u32, u16 }
test_impl_try_from_same_sign_err! { test_try_u64u8, u64, u8 }
test_impl_try_from_same_sign_err! { test_try_u64u16, u64, u16 }
test_impl_try_from_same_sign_err! { test_try_u64u32, u64, u32 }
test_impl_try_from_same_sign_err! { test_try_i16i8, i16, i8 }
test_impl_try_from_same_sign_err! { test_try_i32i8, i32, i8 }
test_impl_try_from_same_sign_err! { test_try_i32i16, i32, i16 }
test_impl_try_from_same_sign_err! { test_try_i64i8, i64, i8 }
test_impl_try_from_same_sign_err! { test_try_i64i16, i64, i16 }
test_impl_try_from_same_sign_err! { test_try_i64i32, i64, i32 }
macro_rules! test_impl_try_from_signed_to_unsigned_err {
($fn_name:ident, $source:ty, $target:ty) => {
#[test]
fn $fn_name() {
let max = <$source>::max_value();
let min = <$source>::min_value();
let zero: $source = 0;
let t_max = <$target>::max_value();
let t_min = <$target>::min_value();
assert!(<$target as TryFrom<$source>>::try_from(max).is_err());
assert!(<$target as TryFrom<$source>>::try_from(min).is_err());
assert_eq!(<$target as TryFrom<$source>>::try_from(zero).unwrap(),
zero as $target);
assert_eq!(<$target as TryFrom<$source>>::try_from(t_max as $source)
.unwrap(),
t_max as $target);
assert_eq!(<$target as TryFrom<$source>>::try_from(t_min as $source)
.unwrap(),
t_min as $target);
}
}
}
test_impl_try_from_signed_to_unsigned_err! { test_try_i16u8, i16, u8 }
test_impl_try_from_signed_to_unsigned_err! { test_try_i32u8, i32, u8 }
test_impl_try_from_signed_to_unsigned_err! { test_try_i32u16, i32, u16 }
test_impl_try_from_signed_to_unsigned_err! { test_try_i64u8, i64, u8 }
test_impl_try_from_signed_to_unsigned_err! { test_try_i64u16, i64, u16 }
test_impl_try_from_signed_to_unsigned_err! { test_try_i64u32, i64, u32 }