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
|
discard """
nimout: "OK"
matrix: "--mm:refc; --mm:orc"
output: '''
OK
'''
"""
import bitops
import std/assertions
proc main() =
const U8 = 0b0011_0010'u8
const I8 = 0b0011_0010'i8
const U16 = 0b00100111_00101000'u16
const I16 = 0b00100111_00101000'i16
const U32 = 0b11010101_10011100_11011010_01010000'u32
const I32 = 0b11010101_10011100_11011010_01010000'i32
const U64A = 0b01000100_00111111_01111100_10001010_10011001_01001000_01111010_00010001'u64
const I64A = 0b01000100_00111111_01111100_10001010_10011001_01001000_01111010_00010001'i64
const U64B = 0b00110010_11011101_10001111_00101000_00000000_00000000_00000000_00000000'u64
const I64B = 0b00110010_11011101_10001111_00101000_00000000_00000000_00000000_00000000'i64
const U64C = 0b00101010_11110101_10001111_00101000_00000100_00000000_00000100_00000000'u64
const I64C = 0b00101010_11110101_10001111_00101000_00000100_00000000_00000100_00000000'i64
doAssert (U8 and U8) == bitand(U8,U8)
doAssert (I8 and I8) == bitand(I8,I8)
doAssert (U16 and U16) == bitand(U16,U16)
doAssert (I16 and I16) == bitand(I16,I16)
doAssert (U32 and U32) == bitand(U32,U32)
doAssert (I32 and I32) == bitand(I32,I32)
doAssert (U64A and U64B) == bitand(U64A,U64B)
doAssert (I64A and I64B) == bitand(I64A,I64B)
doAssert (U64A and U64B and U64C) == bitand(U64A,U64B,U64C)
doAssert (I64A and I64B and I64C) == bitand(I64A,I64B,I64C)
doAssert (U8 or U8) == bitor(U8,U8)
doAssert (I8 or I8) == bitor(I8,I8)
doAssert (U16 or U16) == bitor(U16,U16)
doAssert (I16 or I16) == bitor(I16,I16)
doAssert (U32 or U32) == bitor(U32,U32)
doAssert (I32 or I32) == bitor(I32,I32)
doAssert (U64A or U64B) == bitor(U64A,U64B)
doAssert (I64A or I64B) == bitor(I64A,I64B)
doAssert (U64A or U64B or U64C) == bitor(U64A,U64B,U64C)
doAssert (I64A or I64B or I64C) == bitor(I64A,I64B,I64C)
doAssert (U8 xor U8) == bitxor(U8,U8)
doAssert (I8 xor I8) == bitxor(I8,I8)
doAssert (U16 xor U16) == bitxor(U16,U16)
doAssert (I16 xor I16) == bitxor(I16,I16)
doAssert (U32 xor U32) == bitxor(U32,U32)
doAssert (I32 xor I32) == bitxor(I32,I32)
doAssert (U64A xor U64B) == bitxor(U64A,U64B)
doAssert (I64A xor I64B) == bitxor(I64A,I64B)
doAssert (U64A xor U64B xor U64C) == bitxor(U64A,U64B,U64C)
doAssert (I64A xor I64B xor I64C) == bitxor(I64A,I64B,I64C)
doAssert not(U8) == bitnot(U8)
doAssert not(I8) == bitnot(I8)
doAssert not(U16) == bitnot(U16)
doAssert not(I16) == bitnot(I16)
doAssert not(U32) == bitnot(U32)
doAssert not(I32) == bitnot(I32)
doAssert not(U64A) == bitnot(U64A)
doAssert not(I64A) == bitnot(I64A)
doAssert U64A.fastLog2 == 62
doAssert I64A.fastLog2 == 62
doAssert U64A.countLeadingZeroBits == 1
doAssert I64A.countLeadingZeroBits == 1
doAssert U64A.countTrailingZeroBits == 0
doAssert I64A.countTrailingZeroBits == 0
doAssert U64A.firstSetBit == 1
doAssert I64A.firstSetBit == 1
doAssert U64A.parityBits == 1
doAssert I64A.parityBits == 1
doAssert U64A.countSetBits == 29
doAssert I64A.countSetBits == 29
doAssert U64A.rotateLeftBits(37) == 0b00101001_00001111_01000010_00101000_10000111_11101111_10010001_01010011'u64
doAssert U64A.rotateRightBits(37) == 0b01010100_11001010_01000011_11010000_10001010_00100001_11111011_11100100'u64
doAssert U64B.firstSetBit == 36
doAssert I64B.firstSetBit == 36
doAssert U32.fastLog2 == 31
doAssert I32.fastLog2 == 31
doAssert U32.countLeadingZeroBits == 0
doAssert I32.countLeadingZeroBits == 0
doAssert U32.countTrailingZeroBits == 4
doAssert I32.countTrailingZeroBits == 4
doAssert U32.firstSetBit == 5
doAssert I32.firstSetBit == 5
doAssert U32.parityBits == 0
doAssert I32.parityBits == 0
doAssert U32.countSetBits == 16
doAssert I32.countSetBits == 16
doAssert U32.rotateLeftBits(21) == 0b01001010_00011010_10110011_10011011'u32
doAssert U32.rotateRightBits(21) == 0b11100110_11010010_10000110_10101100'u32
doAssert U16.fastLog2 == 13
doAssert I16.fastLog2 == 13
doAssert U16.countLeadingZeroBits == 2
doAssert I16.countLeadingZeroBits == 2
doAssert U16.countTrailingZeroBits == 3
doAssert I16.countTrailingZeroBits == 3
doAssert U16.firstSetBit == 4
doAssert I16.firstSetBit == 4
doAssert U16.parityBits == 0
doAssert I16.parityBits == 0
doAssert U16.countSetBits == 6
doAssert I16.countSetBits == 6
doAssert U16.rotateLeftBits(12) == 0b10000010_01110010'u16
doAssert U16.rotateRightBits(12) == 0b01110010_10000010'u16
doAssert U8.fastLog2 == 5
doAssert I8.fastLog2 == 5
doAssert U8.countLeadingZeroBits == 2
doAssert I8.countLeadingZeroBits == 2
doAssert U8.countTrailingZeroBits == 1
doAssert I8.countTrailingZeroBits == 1
doAssert U8.firstSetBit == 2
doAssert I8.firstSetBit == 2
doAssert U8.parityBits == 1
doAssert I8.parityBits == 1
doAssert U8.countSetBits == 3
doAssert I8.countSetBits == 3
doAssert U8.rotateLeftBits(3) == 0b10010001'u8
doAssert U8.rotateRightBits(3) == 0b0100_0110'u8
template test_undefined_impl(ffunc: untyped; expected: int; is_static: bool) =
doAssert ffunc(0'u8) == expected
doAssert ffunc(0'i8) == expected
doAssert ffunc(0'u16) == expected
doAssert ffunc(0'i16) == expected
doAssert ffunc(0'u32) == expected
doAssert ffunc(0'i32) == expected
doAssert ffunc(0'u64) == expected
doAssert ffunc(0'i64) == expected
template test_undefined(ffunc: untyped; expected: int) =
test_undefined_impl(ffunc, expected, false)
static:
test_undefined_impl(ffunc, expected, true)
when defined(noUndefinedBitOpts):
# check for undefined behavior with zero.
test_undefined(countSetBits, 0)
test_undefined(parityBits, 0)
test_undefined(firstSetBit, 0)
test_undefined(countLeadingZeroBits, 0)
test_undefined(countTrailingZeroBits, 0)
test_undefined(fastLog2, -1)
# check for undefined behavior with rotate by zero.
doAssert U8.rotateLeftBits(0) == U8
doAssert U8.rotateRightBits(0) == U8
doAssert U16.rotateLeftBits(0) == U16
doAssert U16.rotateRightBits(0) == U16
doAssert U32.rotateLeftBits(0) == U32
doAssert U32.rotateRightBits(0) == U32
doAssert U64A.rotateLeftBits(0) == U64A
doAssert U64A.rotateRightBits(0) == U64A
# check for undefined behavior with rotate by integer width.
doAssert U8.rotateLeftBits(8) == U8
doAssert U8.rotateRightBits(8) == U8
doAssert U16.rotateLeftBits(16) == U16
doAssert U16.rotateRightBits(16) == U16
doAssert U32.rotateLeftBits(32) == U32
doAssert U32.rotateRightBits(32) == U32
doAssert U64A.rotateLeftBits(64) == U64A
doAssert U64A.rotateRightBits(64) == U64A
block:
# basic mask operations (mutating)
var v: uint8
v.setMask(0b1100_0000)
v.setMask(0b0000_1100)
doAssert v == 0b1100_1100
v.flipMask(0b0101_0101)
doAssert v == 0b1001_1001
v.clearMask(0b1000_1000)
doAssert v == 0b0001_0001
v.clearMask(0b0001_0001)
doAssert v == 0b0000_0000
v.setMask(0b0001_1110)
doAssert v == 0b0001_1110
v.mask(0b0101_0100)
doAssert v == 0b0001_0100
block:
# basic mask operations (non-mutating)
let v = 0b1100_0000'u8
doAssert v.masked(0b0000_1100) == 0b0000_0000
doAssert v.masked(0b1000_1100) == 0b1000_0000
doAssert v.setMasked(0b0000_1100) == 0b1100_1100
doAssert v.setMasked(0b1000_1110) == 0b1100_1110
doAssert v.flipMasked(0b1100_1000) == 0b0000_1000
doAssert v.flipMasked(0b0000_1100) == 0b1100_1100
let t = 0b1100_0110'u8
doAssert t.clearMasked(0b0100_1100) == 0b1000_0010
doAssert t.clearMasked(0b1100_0000) == 0b0000_0110
block:
# basic bitslice opeartions
let a = 0b1111_1011'u8
doAssert a.bitsliced(0 .. 3) == 0b1011
doAssert a.bitsliced(2 .. 3) == 0b10
doAssert a.bitsliced(4 .. 7) == 0b1111
# same thing, but with exclusive ranges.
doAssert a.bitsliced(0 ..< 4) == 0b1011
doAssert a.bitsliced(2 ..< 4) == 0b10
doAssert a.bitsliced(4 ..< 8) == 0b1111
# mutating
var b = 0b1111_1011'u8
b.bitslice(1 .. 3)
doAssert b == 0b101
# loop test:
let c = 0b1111_1111'u8
for i in 0 .. 7:
doAssert c.bitsliced(i .. 7) == c shr i
block:
# bitslice versions of mask operations (mutating)
var a = 0b1100_1100'u8
let b = toMask[uint8](2 .. 3)
a.mask(b)
doAssert a == 0b0000_1100
a.setMask(4 .. 7)
doAssert a == 0b1111_1100
a.flipMask(1 .. 3)
doAssert a == 0b1111_0010
a.flipMask(2 .. 4)
doAssert a == 0b1110_1110
a.clearMask(2 .. 4)
doAssert a == 0b1110_0010
a.mask(0 .. 3)
doAssert a == 0b0000_0010
# composition of mask from slices:
let c = bitor(toMask[uint8](2 .. 3), toMask[uint8](5 .. 7))
doAssert c == 0b1110_1100'u8
block:
# bitslice versions of mask operations (non-mutating)
let a = 0b1100_1100'u8
doAssert a.masked(toMask[uint8](2 .. 3)) == 0b0000_1100
doAssert a.masked(2 .. 3) == 0b0000_1100
doAssert a.setMasked(0 .. 3) == 0b1100_1111
doAssert a.setMasked(3 .. 4) == 0b1101_1100
doAssert a.flipMasked(0 .. 3) == 0b1100_0011
doAssert a.flipMasked(0 .. 7) == 0b0011_0011
doAssert a.flipMasked(2 .. 3) == 0b1100_0000
doAssert a.clearMasked(2 .. 3) == 0b1100_0000
doAssert a.clearMasked(3 .. 6) == 0b1000_0100
block:
# single bit operations
var v: uint8
v.setBit(0)
doAssert v == 0x0000_0001
v.setBit(1)
doAssert v == 0b0000_0011
v.flipBit(7)
doAssert v == 0b1000_0011
v.clearBit(0)
doAssert v == 0b1000_0010
v.flipBit(1)
doAssert v == 0b1000_0000
doAssert v.testBit(7)
doAssert not v.testBit(6)
block:
# multi bit operations
var v: uint8
v.setBits(0, 1, 7)
doAssert v == 0b1000_0011
v.flipBits(2, 3)
doAssert v == 0b1000_1111
v.clearBits(7, 0, 1)
doAssert v == 0b0000_1100
block:
# signed
var v: int8
v.setBit(7)
doAssert v == -128
block:
var v: uint64
v.setBit(63)
doAssert v == 0b1000_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000'u64
block:
proc testReverseBitsInvo(x: SomeUnsignedInt) =
doAssert reverseBits(reverseBits(x)) == x
proc testReverseBitsPerType(x, reversed: uint64) =
doAssert reverseBits(x) == reversed
doAssert reverseBits(cast[uint32](x)) == cast[uint32](reversed shr 32)
doAssert reverseBits(cast[uint32](x shr 16)) == cast[uint32](reversed shr 16)
doAssert reverseBits(cast[uint16](x)) == cast[uint16](reversed shr 48)
doAssert reverseBits(cast[uint8](x)) == cast[uint8](reversed shr 56)
testReverseBitsInvo(x)
testReverseBitsInvo(cast[uint32](x))
testReverseBitsInvo(cast[uint16](x))
testReverseBitsInvo(cast[uint8](x))
proc testReverseBitsRefl(x, reversed: uint64) =
testReverseBitsPerType(x, reversed)
testReverseBitsPerType(reversed, x)
proc testReverseBitsShift(d, b: uint64) =
var
x = d
y = b
for i in 1..64:
testReverseBitsRefl(x, y)
x = x shl 1
y = y shr 1
proc testReverseBits(d, b: uint64) =
testReverseBitsShift(d, b)
testReverseBits(0x0u64, 0x0u64)
testReverseBits(0xffffffffffffffffu64, 0xffffffffffffffffu64)
testReverseBits(0x0123456789abcdefu64, 0xf7b3d591e6a2c480u64)
testReverseBits(0x5555555555555555u64, 0xaaaaaaaaaaaaaaaau64)
testReverseBits(0x5555555500000001u64, 0x80000000aaaaaaaau64)
testReverseBits(0x55555555aaaaaaaau64, 0x55555555aaaaaaaau64)
testReverseBits(0xf0f0f0f00f0f0f0fu64, 0xf0f0f0f00f0f0f0fu64)
testReverseBits(0x181881810ff00916u64, 0x68900ff081811818u64)
echo "OK"
# bug #7587
doAssert popcount(0b11111111'i8) == 8
block: # not ready for vm because exception is compile error
try:
var v: uint32
var i = 32
v.setBit(i)
doAssert false
except RangeDefect:
discard
except:
doAssert false
main()
static:
# test everything on vm as well
main()
|
