1 // Copyright 2015 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 // compile-flags: -C debug-assertions
13 // Test std::num::Wrapping<T> for {uN, iN, usize, isize}
19 use std::num::Wrapping;
21 Add, Sub, Mul, Div, Rem, BitXor, BitOr, BitAnd,
22 AddAssign, SubAssign, MulAssign, DivAssign, RemAssign, BitXorAssign, BitOrAssign, BitAndAssign,
23 Shl, Shr, ShlAssign, ShrAssign
27 macro_rules! int_modules {
28 ($(($name:ident, $size:expr),)*) => ($(
30 pub const BITS: usize = $size;
31 pub use std::$name::*;
47 #[cfg(target_pointer_width = "32")]
53 #[cfg(target_pointer_width = "64")]
67 macro_rules! op_test {
68 ($op:ident ($lhs:expr, $rhs:expr) == $ans:expr) => {
69 assert_eq!(black_box(Wrapping($lhs).$op(Wrapping($rhs))), Wrapping($ans));
70 // FIXME(30524): uncomment this test when it's implemented
71 // assert_eq!(black_box(Wrapping($lhs).$op($rhs)), Wrapping($ans));
75 op_test!(add(i8::MAX, 1) == i8::MIN);
76 op_test!(add(i16::MAX, 1) == i16::MIN);
77 op_test!(add(i32::MAX, 1) == i32::MIN);
78 op_test!(add(i64::MAX, 1) == i64::MIN);
79 op_test!(add(isize::MAX, 1) == isize::MIN);
81 op_test!(add(u8::MAX, 1) == 0);
82 op_test!(add(u16::MAX, 1) == 0);
83 op_test!(add(u32::MAX, 1) == 0);
84 op_test!(add(u64::MAX, 1) == 0);
85 op_test!(add(usize::MAX, 1) == 0);
88 op_test!(sub(i8::MIN, 1) == i8::MAX);
89 op_test!(sub(i16::MIN, 1) == i16::MAX);
90 op_test!(sub(i32::MIN, 1) == i32::MAX);
91 op_test!(sub(i64::MIN, 1) == i64::MAX);
92 op_test!(sub(isize::MIN, 1) == isize::MAX);
94 op_test!(sub(0u8, 1) == u8::MAX);
95 op_test!(sub(0u16, 1) == u16::MAX);
96 op_test!(sub(0u32, 1) == u32::MAX);
97 op_test!(sub(0u64, 1) == u64::MAX);
98 op_test!(sub(0usize, 1) == usize::MAX);
101 op_test!(mul(i8::MAX, 2) == -2);
102 op_test!(mul(i16::MAX, 2) == -2);
103 op_test!(mul(i32::MAX, 2) == -2);
104 op_test!(mul(i64::MAX, 2) == -2);
105 op_test!(mul(isize::MAX, 2) == -2);
107 op_test!(mul(u8::MAX, 2) == u8::MAX - 1);
108 op_test!(mul(u16::MAX, 2) == u16::MAX - 1);
109 op_test!(mul(u32::MAX, 2) == u32::MAX - 1);
110 op_test!(mul(u64::MAX, 2) == u64::MAX - 1);
111 op_test!(mul(usize::MAX, 2) == usize::MAX - 1);
114 op_test!(div(i8::MIN, -1) == i8::MIN);
115 op_test!(div(i16::MIN, -1) == i16::MIN);
116 op_test!(div(i32::MIN, -1) == i32::MIN);
117 op_test!(div(i64::MIN, -1) == i64::MIN);
118 op_test!(div(isize::MIN, -1) == isize::MIN);
121 op_test!(rem(i8::MIN, -1) == 0);
122 op_test!(rem(i16::MIN, -1) == 0);
123 op_test!(rem(i32::MIN, -1) == 0);
124 op_test!(rem(i64::MIN, -1) == 0);
125 op_test!(rem(isize::MIN, -1) == 0);
127 // these are not that interesting, just testing to make sure they are implemented correctly
128 op_test!(bitxor(0b101010i8, 0b100110) == 0b001100);
129 op_test!(bitxor(0b101010i16, 0b100110) == 0b001100);
130 op_test!(bitxor(0b101010i32, 0b100110) == 0b001100);
131 op_test!(bitxor(0b101010i64, 0b100110) == 0b001100);
132 op_test!(bitxor(0b101010isize, 0b100110) == 0b001100);
134 op_test!(bitxor(0b101010u8, 0b100110) == 0b001100);
135 op_test!(bitxor(0b101010u16, 0b100110) == 0b001100);
136 op_test!(bitxor(0b101010u32, 0b100110) == 0b001100);
137 op_test!(bitxor(0b101010u64, 0b100110) == 0b001100);
138 op_test!(bitxor(0b101010usize, 0b100110) == 0b001100);
141 op_test!(bitor(0b101010i8, 0b100110) == 0b101110);
142 op_test!(bitor(0b101010i16, 0b100110) == 0b101110);
143 op_test!(bitor(0b101010i32, 0b100110) == 0b101110);
144 op_test!(bitor(0b101010i64, 0b100110) == 0b101110);
145 op_test!(bitor(0b101010isize, 0b100110) == 0b101110);
147 op_test!(bitor(0b101010u8, 0b100110) == 0b101110);
148 op_test!(bitor(0b101010u16, 0b100110) == 0b101110);
149 op_test!(bitor(0b101010u32, 0b100110) == 0b101110);
150 op_test!(bitor(0b101010u64, 0b100110) == 0b101110);
151 op_test!(bitor(0b101010usize, 0b100110) == 0b101110);
154 op_test!(bitand(0b101010i8, 0b100110) == 0b100010);
155 op_test!(bitand(0b101010i16, 0b100110) == 0b100010);
156 op_test!(bitand(0b101010i32, 0b100110) == 0b100010);
157 op_test!(bitand(0b101010i64, 0b100110) == 0b100010);
158 op_test!(bitand(0b101010isize, 0b100110) == 0b100010);
160 op_test!(bitand(0b101010u8, 0b100110) == 0b100010);
161 op_test!(bitand(0b101010u16, 0b100110) == 0b100010);
162 op_test!(bitand(0b101010u32, 0b100110) == 0b100010);
163 op_test!(bitand(0b101010u64, 0b100110) == 0b100010);
164 op_test!(bitand(0b101010usize, 0b100110) == 0b100010);
167 fn test_op_assigns() {
168 macro_rules! op_assign_test {
169 ($op:ident ($initial:expr, $rhs:expr) == $ans:expr) => {
171 let mut tmp = Wrapping($initial);
172 tmp = black_box(tmp);
173 tmp.$op(Wrapping($rhs));
174 assert_eq!(black_box(tmp), Wrapping($ans));
176 // FIXME(30524): Uncomment this test
179 let mut tmp = Wrapping($initial);
180 tmp = black_box(tmp);
182 assert_eq!(black_box(tmp), Wrapping($ans));
187 op_assign_test!(add_assign(i8::MAX, 1) == i8::MIN);
188 op_assign_test!(add_assign(i16::MAX, 1) == i16::MIN);
189 op_assign_test!(add_assign(i32::MAX, 1) == i32::MIN);
190 op_assign_test!(add_assign(i64::MAX, 1) == i64::MIN);
191 op_assign_test!(add_assign(isize::MAX, 1) == isize::MIN);
193 op_assign_test!(add_assign(u8::MAX, 1) == u8::MIN);
194 op_assign_test!(add_assign(u16::MAX, 1) == u16::MIN);
195 op_assign_test!(add_assign(u32::MAX, 1) == u32::MIN);
196 op_assign_test!(add_assign(u64::MAX, 1) == u64::MIN);
197 op_assign_test!(add_assign(usize::MAX, 1) == usize::MIN);
200 op_assign_test!(sub_assign(i8::MIN, 1) == i8::MAX);
201 op_assign_test!(sub_assign(i16::MIN, 1) == i16::MAX);
202 op_assign_test!(sub_assign(i32::MIN, 1) == i32::MAX);
203 op_assign_test!(sub_assign(i64::MIN, 1) == i64::MAX);
204 op_assign_test!(sub_assign(isize::MIN, 1) == isize::MAX);
206 op_assign_test!(sub_assign(u8::MIN, 1) == u8::MAX);
207 op_assign_test!(sub_assign(u16::MIN, 1) == u16::MAX);
208 op_assign_test!(sub_assign(u32::MIN, 1) == u32::MAX);
209 op_assign_test!(sub_assign(u64::MIN, 1) == u64::MAX);
210 op_assign_test!(sub_assign(usize::MIN, 1) == usize::MAX);
213 op_assign_test!(mul_assign(i8::MAX, 2) == -2);
214 op_assign_test!(mul_assign(i16::MAX, 2) == -2);
215 op_assign_test!(mul_assign(i32::MAX, 2) == -2);
216 op_assign_test!(mul_assign(i64::MAX, 2) == -2);
217 op_assign_test!(mul_assign(isize::MAX, 2) == -2);
219 op_assign_test!(mul_assign(u8::MAX, 2) == u8::MAX - 1);
220 op_assign_test!(mul_assign(u16::MAX, 2) == u16::MAX - 1);
221 op_assign_test!(mul_assign(u32::MAX, 2) == u32::MAX - 1);
222 op_assign_test!(mul_assign(u64::MAX, 2) == u64::MAX - 1);
223 op_assign_test!(mul_assign(usize::MAX, 2) == usize::MAX - 1);
226 op_assign_test!(div_assign(i8::MIN, -1) == i8::MIN);
227 op_assign_test!(div_assign(i16::MIN, -1) == i16::MIN);
228 op_assign_test!(div_assign(i32::MIN, -1) == i32::MIN);
229 op_assign_test!(div_assign(i64::MIN, -1) == i64::MIN);
230 op_assign_test!(div_assign(isize::MIN, -1) == isize::MIN);
233 op_assign_test!(rem_assign(i8::MIN, -1) == 0);
234 op_assign_test!(rem_assign(i16::MIN, -1) == 0);
235 op_assign_test!(rem_assign(i32::MIN, -1) == 0);
236 op_assign_test!(rem_assign(i64::MIN, -1) == 0);
237 op_assign_test!(rem_assign(isize::MIN, -1) == 0);
240 // these are not that interesting, just testing to make sure they are implemented correctly
241 op_assign_test!(bitxor_assign(0b101010i8, 0b100110) == 0b001100);
242 op_assign_test!(bitxor_assign(0b101010i16, 0b100110) == 0b001100);
243 op_assign_test!(bitxor_assign(0b101010i32, 0b100110) == 0b001100);
244 op_assign_test!(bitxor_assign(0b101010i64, 0b100110) == 0b001100);
245 op_assign_test!(bitxor_assign(0b101010isize, 0b100110) == 0b001100);
247 op_assign_test!(bitxor_assign(0b101010u8, 0b100110) == 0b001100);
248 op_assign_test!(bitxor_assign(0b101010u16, 0b100110) == 0b001100);
249 op_assign_test!(bitxor_assign(0b101010u32, 0b100110) == 0b001100);
250 op_assign_test!(bitxor_assign(0b101010u64, 0b100110) == 0b001100);
251 op_assign_test!(bitxor_assign(0b101010usize, 0b100110) == 0b001100);
254 op_assign_test!(bitor_assign(0b101010i8, 0b100110) == 0b101110);
255 op_assign_test!(bitor_assign(0b101010i16, 0b100110) == 0b101110);
256 op_assign_test!(bitor_assign(0b101010i32, 0b100110) == 0b101110);
257 op_assign_test!(bitor_assign(0b101010i64, 0b100110) == 0b101110);
258 op_assign_test!(bitor_assign(0b101010isize, 0b100110) == 0b101110);
260 op_assign_test!(bitor_assign(0b101010u8, 0b100110) == 0b101110);
261 op_assign_test!(bitor_assign(0b101010u16, 0b100110) == 0b101110);
262 op_assign_test!(bitor_assign(0b101010u32, 0b100110) == 0b101110);
263 op_assign_test!(bitor_assign(0b101010u64, 0b100110) == 0b101110);
264 op_assign_test!(bitor_assign(0b101010usize, 0b100110) == 0b101110);
267 op_assign_test!(bitand_assign(0b101010i8, 0b100110) == 0b100010);
268 op_assign_test!(bitand_assign(0b101010i16, 0b100110) == 0b100010);
269 op_assign_test!(bitand_assign(0b101010i32, 0b100110) == 0b100010);
270 op_assign_test!(bitand_assign(0b101010i64, 0b100110) == 0b100010);
271 op_assign_test!(bitand_assign(0b101010isize, 0b100110) == 0b100010);
273 op_assign_test!(bitand_assign(0b101010u8, 0b100110) == 0b100010);
274 op_assign_test!(bitand_assign(0b101010u16, 0b100110) == 0b100010);
275 op_assign_test!(bitand_assign(0b101010u32, 0b100110) == 0b100010);
276 op_assign_test!(bitand_assign(0b101010u64, 0b100110) == 0b100010);
277 op_assign_test!(bitand_assign(0b101010usize, 0b100110) == 0b100010);
281 macro_rules! sh_test {
282 ($op:ident ($lhs:expr, $rhs:expr) == $ans:expr) => {
283 assert_eq!(black_box(Wrapping($lhs).$op($rhs)), Wrapping($ans));
286 // NOTE: This will break for i8 if we ever get i/u128
287 macro_rules! sh_test_all {
289 sh_test!(shl(i8::MAX, (i8::BITS + 1) as $t) == -2);
290 sh_test!(shl(i16::MAX, (i16::BITS + 1) as $t) == -2);
291 sh_test!(shl(i32::MAX, (i32::BITS + 1) as $t) == -2);
292 sh_test!(shl(i64::MAX, (i64::BITS + 1) as $t) == -2);
293 sh_test!(shl(isize::MAX, (isize::BITS + 1) as $t) == -2);
295 sh_test!(shl(u8::MAX, (u8::BITS + 1) as $t) == u8::MAX - 1);
296 sh_test!(shl(u16::MAX, (u16::BITS + 1) as $t) == u16::MAX - 1);
297 sh_test!(shl(u32::MAX, (u32::BITS + 1) as $t) == u32::MAX - 1);
298 sh_test!(shl(u64::MAX, (u64::BITS + 1) as $t) == u64::MAX - 1);
299 sh_test!(shl(usize::MAX, (usize::BITS + 1) as $t) == usize::MAX - 1);
302 sh_test!(shr(i8::MAX, (i8::BITS + 1) as $t) == i8::MAX / 2);
303 sh_test!(shr(i16::MAX, (i16::BITS + 1) as $t) == i16::MAX / 2);
304 sh_test!(shr(i32::MAX, (i32::BITS + 1) as $t) == i32::MAX / 2);
305 sh_test!(shr(i64::MAX, (i64::BITS + 1) as $t) == i64::MAX / 2);
306 sh_test!(shr(isize::MAX, (isize::BITS + 1) as $t) == isize::MAX / 2);
308 sh_test!(shr(u8::MAX, (u8::BITS + 1) as $t) == u8::MAX / 2);
309 sh_test!(shr(u16::MAX, (u16::BITS + 1) as $t) == u16::MAX / 2);
310 sh_test!(shr(u32::MAX, (u32::BITS + 1) as $t) == u32::MAX / 2);
311 sh_test!(shr(u64::MAX, (u64::BITS + 1) as $t) == u64::MAX / 2);
312 sh_test!(shr(usize::MAX, (usize::BITS + 1) as $t) == usize::MAX / 2);
315 macro_rules! sh_test_negative_all {
317 sh_test!(shr(i8::MAX, -((i8::BITS + 1) as $t)) == -2);
318 sh_test!(shr(i16::MAX, -((i16::BITS + 1) as $t)) == -2);
319 sh_test!(shr(i32::MAX, -((i32::BITS + 1) as $t)) == -2);
320 sh_test!(shr(i64::MAX, -((i64::BITS + 1) as $t)) == -2);
321 sh_test!(shr(isize::MAX, -((isize::BITS + 1) as $t)) == -2);
323 sh_test!(shr(u8::MAX, -((u8::BITS + 1) as $t)) == u8::MAX - 1);
324 sh_test!(shr(u16::MAX, -((u16::BITS + 1) as $t)) == u16::MAX - 1);
325 sh_test!(shr(u32::MAX, -((u32::BITS + 1) as $t)) == u32::MAX - 1);
326 sh_test!(shr(u64::MAX, -((u64::BITS + 1) as $t)) == u64::MAX - 1);
327 sh_test!(shr(usize::MAX, -((usize::BITS + 1) as $t)) == usize::MAX - 1);
330 sh_test!(shl(i8::MAX, -((i8::BITS + 1) as $t)) == i8::MAX / 2);
331 sh_test!(shl(i16::MAX, -((i16::BITS + 1) as $t)) == i16::MAX / 2);
332 sh_test!(shl(i32::MAX, -((i32::BITS + 1) as $t)) == i32::MAX / 2);
333 sh_test!(shl(i64::MAX, -((i64::BITS + 1) as $t)) == i64::MAX / 2);
334 sh_test!(shl(isize::MAX, -((isize::BITS + 1) as $t)) == isize::MAX / 2);
336 sh_test!(shl(u8::MAX, -((u8::BITS + 1) as $t)) == u8::MAX / 2);
337 sh_test!(shl(u16::MAX, -((u16::BITS + 1) as $t)) == u16::MAX / 2);
338 sh_test!(shl(u32::MAX, -((u32::BITS + 1) as $t)) == u32::MAX / 2);
339 sh_test!(shl(u64::MAX, -((u64::BITS + 1) as $t)) == u64::MAX / 2);
340 sh_test!(shl(usize::MAX, -((usize::BITS + 1) as $t)) == usize::MAX / 2);
343 // FIXME(#23545): Uncomment the remaining tests
352 //sh_test_all!(isize);
355 //sh_test_negative_all!(i8);
356 //sh_test_negative_all!(i16);
357 //sh_test_negative_all!(i32);
358 //sh_test_negative_all!(i64);
359 //sh_test_negative_all!(isize);
362 fn test_sh_op_assigns() {
363 macro_rules! sh_assign_test {
364 ($op:ident ($initial:expr, $rhs:expr) == $ans:expr) => {{
365 let mut tmp = Wrapping($initial);
366 tmp = black_box(tmp);
368 assert_eq!(black_box(tmp), Wrapping($ans));
371 macro_rules! sh_assign_test_all {
373 sh_assign_test!(shl_assign(i8::MAX, (i8::BITS + 1) as $t) == -2);
374 sh_assign_test!(shl_assign(i16::MAX, (i16::BITS + 1) as $t) == -2);
375 sh_assign_test!(shl_assign(i32::MAX, (i32::BITS + 1) as $t) == -2);
376 sh_assign_test!(shl_assign(i64::MAX, (i64::BITS + 1) as $t) == -2);
377 sh_assign_test!(shl_assign(isize::MAX, (isize::BITS + 1) as $t) == -2);
379 sh_assign_test!(shl_assign(u8::MAX, (u8::BITS + 1) as $t) == u8::MAX - 1);
380 sh_assign_test!(shl_assign(u16::MAX, (u16::BITS + 1) as $t) == u16::MAX - 1);
381 sh_assign_test!(shl_assign(u32::MAX, (u32::BITS + 1) as $t) == u32::MAX - 1);
382 sh_assign_test!(shl_assign(u64::MAX, (u64::BITS + 1) as $t) == u64::MAX - 1);
383 sh_assign_test!(shl_assign(usize::MAX, (usize::BITS + 1) as $t) == usize::MAX - 1);
386 sh_assign_test!(shr_assign(i8::MAX, (i8::BITS + 1) as $t) == i8::MAX / 2);
387 sh_assign_test!(shr_assign(i16::MAX, (i16::BITS + 1) as $t) == i16::MAX / 2);
388 sh_assign_test!(shr_assign(i32::MAX, (i32::BITS + 1) as $t) == i32::MAX / 2);
389 sh_assign_test!(shr_assign(i64::MAX, (i64::BITS + 1) as $t) == i64::MAX / 2);
390 sh_assign_test!(shr_assign(isize::MAX, (isize::BITS + 1) as $t) == isize::MAX / 2);
392 sh_assign_test!(shr_assign(u8::MAX, (u8::BITS + 1) as $t) == u8::MAX / 2);
393 sh_assign_test!(shr_assign(u16::MAX, (u16::BITS + 1) as $t) == u16::MAX / 2);
394 sh_assign_test!(shr_assign(u32::MAX, (u32::BITS + 1) as $t) == u32::MAX / 2);
395 sh_assign_test!(shr_assign(u64::MAX, (u64::BITS + 1) as $t) == u64::MAX / 2);
396 sh_assign_test!(shr_assign(usize::MAX, (usize::BITS + 1) as $t) == usize::MAX / 2);
399 macro_rules! sh_assign_test_negative_all {
401 sh_assign_test!(shr_assign(i8::MAX, -((i8::BITS + 1) as $t)) == -2);
402 sh_assign_test!(shr_assign(i16::MAX, -((i16::BITS + 1) as $t)) == -2);
403 sh_assign_test!(shr_assign(i32::MAX, -((i32::BITS + 1) as $t)) == -2);
404 sh_assign_test!(shr_assign(i64::MAX, -((i64::BITS + 1) as $t)) == -2);
405 sh_assign_test!(shr_assign(isize::MAX, -((isize::BITS + 1) as $t)) == -2);
407 sh_assign_test!(shr_assign(u8::MAX, -((u8::BITS + 1) as $t)) == u8::MAX - 1);
408 sh_assign_test!(shr_assign(u16::MAX, -((u16::BITS + 1) as $t)) == u16::MAX - 1);
409 sh_assign_test!(shr_assign(u32::MAX, -((u32::BITS + 1) as $t)) == u32::MAX - 1);
410 sh_assign_test!(shr_assign(u64::MAX, -((u64::BITS + 1) as $t)) == u64::MAX - 1);
411 sh_assign_test!(shr_assign(usize::MAX, -((usize::BITS + 1) as $t)) == usize::MAX - 1);
414 sh_assign_test!(shl_assign(i8::MAX, -((i8::BITS + 1) as $t)) == i8::MAX / 2);
415 sh_assign_test!(shl_assign(i16::MAX, -((i16::BITS + 1) as $t)) == i16::MAX / 2);
416 sh_assign_test!(shl_assign(i32::MAX, -((i32::BITS + 1) as $t)) == i32::MAX / 2);
417 sh_assign_test!(shl_assign(i64::MAX, -((i64::BITS + 1) as $t)) == i64::MAX / 2);
418 sh_assign_test!(shl_assign(isize::MAX, -((isize::BITS + 1) as $t)) == isize::MAX / 2);
420 sh_assign_test!(shl_assign(u8::MAX, -((u8::BITS + 1) as $t)) == u8::MAX / 2);
421 sh_assign_test!(shl_assign(u16::MAX, -((u16::BITS + 1) as $t)) == u16::MAX / 2);
422 sh_assign_test!(shl_assign(u32::MAX, -((u32::BITS + 1) as $t)) == u32::MAX / 2);
423 sh_assign_test!(shl_assign(u64::MAX, -((u64::BITS + 1) as $t)) == u64::MAX / 2);
424 sh_assign_test!(shl_assign(usize::MAX, -((usize::BITS + 1) as $t)) == usize::MAX / 2);
428 // FIXME(#23545): Uncomment the remaining tests
429 //sh_assign_test_all!(i8);
430 //sh_assign_test_all!(u8);
431 //sh_assign_test_all!(i16);
432 //sh_assign_test_all!(u16);
433 //sh_assign_test_all!(i32);
434 //sh_assign_test_all!(u32);
435 //sh_assign_test_all!(i64);
436 //sh_assign_test_all!(u64);
437 //sh_assign_test_all!(isize);
438 sh_assign_test_all!(usize);
440 //sh_assign_test_negative_all!(i8);
441 //sh_assign_test_negative_all!(i16);
442 //sh_assign_test_negative_all!(i32);
443 //sh_assign_test_negative_all!(i64);
444 //sh_assign_test_negative_all!(isize);