1const builtin = @import("builtin");
2const clz = @import("count0bits.zig");
3const testing = @import("std").testing;
4
5fn test__clzsi2(a: u32, expected: i32) !void {
6 const nakedClzsi2 = clz.__clzsi2;
7 const actualClzsi2 = @as(*const fn (a: i32) callconv(.c) i32, @ptrCast(&nakedClzsi2));
8 const x: i32 = @bitCast(a);
9 const result = actualClzsi2(x);
10 try testing.expectEqual(expected, result);
11}
12
13test "clzsi2" {
14 try test__clzsi2(0x00800000, 8);
15 try test__clzsi2(0x01000000, 7);
16 try test__clzsi2(0x02000000, 6);
17 try test__clzsi2(0x03000000, 6);
18 try test__clzsi2(0x04000000, 5);
19 try test__clzsi2(0x05000000, 5);
20 try test__clzsi2(0x06000000, 5);
21 try test__clzsi2(0x07000000, 5);
22 try test__clzsi2(0x08000000, 4);
23 try test__clzsi2(0x09000000, 4);
24 try test__clzsi2(0x0A000000, 4);
25 try test__clzsi2(0x0B000000, 4);
26 try test__clzsi2(0x0C000000, 4);
27 try test__clzsi2(0x0D000000, 4);
28 try test__clzsi2(0x0E000000, 4);
29 try test__clzsi2(0x0F000000, 4);
30 try test__clzsi2(0x10000000, 3);
31 try test__clzsi2(0x11000000, 3);
32 try test__clzsi2(0x12000000, 3);
33 try test__clzsi2(0x13000000, 3);
34 try test__clzsi2(0x14000000, 3);
35 try test__clzsi2(0x15000000, 3);
36 try test__clzsi2(0x16000000, 3);
37 try test__clzsi2(0x17000000, 3);
38 try test__clzsi2(0x18000000, 3);
39 try test__clzsi2(0x19000000, 3);
40 try test__clzsi2(0x1A000000, 3);
41 try test__clzsi2(0x1B000000, 3);
42 try test__clzsi2(0x1C000000, 3);
43 try test__clzsi2(0x1D000000, 3);
44 try test__clzsi2(0x1E000000, 3);
45 try test__clzsi2(0x1F000000, 3);
46 try test__clzsi2(0x20000000, 2);
47 try test__clzsi2(0x21000000, 2);
48 try test__clzsi2(0x22000000, 2);
49 try test__clzsi2(0x23000000, 2);
50 try test__clzsi2(0x24000000, 2);
51 try test__clzsi2(0x25000000, 2);
52 try test__clzsi2(0x26000000, 2);
53 try test__clzsi2(0x27000000, 2);
54 try test__clzsi2(0x28000000, 2);
55 try test__clzsi2(0x29000000, 2);
56 try test__clzsi2(0x2A000000, 2);
57 try test__clzsi2(0x2B000000, 2);
58 try test__clzsi2(0x2C000000, 2);
59 try test__clzsi2(0x2D000000, 2);
60 try test__clzsi2(0x2E000000, 2);
61 try test__clzsi2(0x2F000000, 2);
62 try test__clzsi2(0x30000000, 2);
63 try test__clzsi2(0x31000000, 2);
64 try test__clzsi2(0x32000000, 2);
65 try test__clzsi2(0x33000000, 2);
66 try test__clzsi2(0x34000000, 2);
67 try test__clzsi2(0x35000000, 2);
68 try test__clzsi2(0x36000000, 2);
69 try test__clzsi2(0x37000000, 2);
70 try test__clzsi2(0x38000000, 2);
71 try test__clzsi2(0x39000000, 2);
72 try test__clzsi2(0x3A000000, 2);
73 try test__clzsi2(0x3B000000, 2);
74 try test__clzsi2(0x3C000000, 2);
75 try test__clzsi2(0x3D000000, 2);
76 try test__clzsi2(0x3E000000, 2);
77 try test__clzsi2(0x3F000000, 2);
78 try test__clzsi2(0x40000000, 1);
79 try test__clzsi2(0x41000000, 1);
80 try test__clzsi2(0x42000000, 1);
81 try test__clzsi2(0x43000000, 1);
82 try test__clzsi2(0x44000000, 1);
83 try test__clzsi2(0x45000000, 1);
84 try test__clzsi2(0x46000000, 1);
85 try test__clzsi2(0x47000000, 1);
86 try test__clzsi2(0x48000000, 1);
87 try test__clzsi2(0x49000000, 1);
88 try test__clzsi2(0x4A000000, 1);
89 try test__clzsi2(0x4B000000, 1);
90 try test__clzsi2(0x4C000000, 1);
91 try test__clzsi2(0x4D000000, 1);
92 try test__clzsi2(0x4E000000, 1);
93 try test__clzsi2(0x4F000000, 1);
94 try test__clzsi2(0x50000000, 1);
95 try test__clzsi2(0x51000000, 1);
96 try test__clzsi2(0x52000000, 1);
97 try test__clzsi2(0x53000000, 1);
98 try test__clzsi2(0x54000000, 1);
99 try test__clzsi2(0x55000000, 1);
100 try test__clzsi2(0x56000000, 1);
101 try test__clzsi2(0x57000000, 1);
102 try test__clzsi2(0x58000000, 1);
103 try test__clzsi2(0x59000000, 1);
104 try test__clzsi2(0x5A000000, 1);
105 try test__clzsi2(0x5B000000, 1);
106 try test__clzsi2(0x5C000000, 1);
107 try test__clzsi2(0x5D000000, 1);
108 try test__clzsi2(0x5E000000, 1);
109 try test__clzsi2(0x5F000000, 1);
110 try test__clzsi2(0x60000000, 1);
111 try test__clzsi2(0x61000000, 1);
112 try test__clzsi2(0x62000000, 1);
113 try test__clzsi2(0x63000000, 1);
114 try test__clzsi2(0x64000000, 1);
115 try test__clzsi2(0x65000000, 1);
116 try test__clzsi2(0x66000000, 1);
117 try test__clzsi2(0x67000000, 1);
118 try test__clzsi2(0x68000000, 1);
119 try test__clzsi2(0x69000000, 1);
120 try test__clzsi2(0x6A000000, 1);
121 try test__clzsi2(0x6B000000, 1);
122 try test__clzsi2(0x6C000000, 1);
123 try test__clzsi2(0x6D000000, 1);
124 try test__clzsi2(0x6E000000, 1);
125 try test__clzsi2(0x6F000000, 1);
126 try test__clzsi2(0x70000000, 1);
127 try test__clzsi2(0x71000000, 1);
128 try test__clzsi2(0x72000000, 1);
129 try test__clzsi2(0x73000000, 1);
130 try test__clzsi2(0x74000000, 1);
131 try test__clzsi2(0x75000000, 1);
132 try test__clzsi2(0x76000000, 1);
133 try test__clzsi2(0x77000000, 1);
134 try test__clzsi2(0x78000000, 1);
135 try test__clzsi2(0x79000000, 1);
136 try test__clzsi2(0x7A000000, 1);
137 try test__clzsi2(0x7B000000, 1);
138 try test__clzsi2(0x7C000000, 1);
139 try test__clzsi2(0x7D000000, 1);
140 try test__clzsi2(0x7E000000, 1);
141 try test__clzsi2(0x7F000000, 1);
142 try test__clzsi2(0x80000000, 0);
143 try test__clzsi2(0x81000000, 0);
144 try test__clzsi2(0x82000000, 0);
145 try test__clzsi2(0x83000000, 0);
146 try test__clzsi2(0x84000000, 0);
147 try test__clzsi2(0x85000000, 0);
148 try test__clzsi2(0x86000000, 0);
149 try test__clzsi2(0x87000000, 0);
150 try test__clzsi2(0x88000000, 0);
151 try test__clzsi2(0x89000000, 0);
152 try test__clzsi2(0x8A000000, 0);
153 try test__clzsi2(0x8B000000, 0);
154 try test__clzsi2(0x8C000000, 0);
155 try test__clzsi2(0x8D000000, 0);
156 try test__clzsi2(0x8E000000, 0);
157 try test__clzsi2(0x8F000000, 0);
158 try test__clzsi2(0x90000000, 0);
159 try test__clzsi2(0x91000000, 0);
160 try test__clzsi2(0x92000000, 0);
161 try test__clzsi2(0x93000000, 0);
162 try test__clzsi2(0x94000000, 0);
163 try test__clzsi2(0x95000000, 0);
164 try test__clzsi2(0x96000000, 0);
165 try test__clzsi2(0x97000000, 0);
166 try test__clzsi2(0x98000000, 0);
167 try test__clzsi2(0x99000000, 0);
168 try test__clzsi2(0x9A000000, 0);
169 try test__clzsi2(0x9B000000, 0);
170 try test__clzsi2(0x9C000000, 0);
171 try test__clzsi2(0x9D000000, 0);
172 try test__clzsi2(0x9E000000, 0);
173 try test__clzsi2(0x9F000000, 0);
174 try test__clzsi2(0xA0000000, 0);
175 try test__clzsi2(0xA1000000, 0);
176 try test__clzsi2(0xA2000000, 0);
177 try test__clzsi2(0xA3000000, 0);
178 try test__clzsi2(0xA4000000, 0);
179 try test__clzsi2(0xA5000000, 0);
180 try test__clzsi2(0xA6000000, 0);
181 try test__clzsi2(0xA7000000, 0);
182 try test__clzsi2(0xA8000000, 0);
183 try test__clzsi2(0xA9000000, 0);
184 try test__clzsi2(0xAA000000, 0);
185 try test__clzsi2(0xAB000000, 0);
186 try test__clzsi2(0xAC000000, 0);
187 try test__clzsi2(0xAD000000, 0);
188 try test__clzsi2(0xAE000000, 0);
189 try test__clzsi2(0xAF000000, 0);
190 try test__clzsi2(0xB0000000, 0);
191 try test__clzsi2(0xB1000000, 0);
192 try test__clzsi2(0xB2000000, 0);
193 try test__clzsi2(0xB3000000, 0);
194 try test__clzsi2(0xB4000000, 0);
195 try test__clzsi2(0xB5000000, 0);
196 try test__clzsi2(0xB6000000, 0);
197 try test__clzsi2(0xB7000000, 0);
198 try test__clzsi2(0xB8000000, 0);
199 try test__clzsi2(0xB9000000, 0);
200 try test__clzsi2(0xBA000000, 0);
201 try test__clzsi2(0xBB000000, 0);
202 try test__clzsi2(0xBC000000, 0);
203 try test__clzsi2(0xBD000000, 0);
204 try test__clzsi2(0xBE000000, 0);
205 try test__clzsi2(0xBF000000, 0);
206 try test__clzsi2(0xC0000000, 0);
207 try test__clzsi2(0xC1000000, 0);
208 try test__clzsi2(0xC2000000, 0);
209 try test__clzsi2(0xC3000000, 0);
210 try test__clzsi2(0xC4000000, 0);
211 try test__clzsi2(0xC5000000, 0);
212 try test__clzsi2(0xC6000000, 0);
213 try test__clzsi2(0xC7000000, 0);
214 try test__clzsi2(0xC8000000, 0);
215 try test__clzsi2(0xC9000000, 0);
216 try test__clzsi2(0xCA000000, 0);
217 try test__clzsi2(0xCB000000, 0);
218 try test__clzsi2(0xCC000000, 0);
219 try test__clzsi2(0xCD000000, 0);
220 try test__clzsi2(0xCE000000, 0);
221 try test__clzsi2(0xCF000000, 0);
222 try test__clzsi2(0xD0000000, 0);
223 try test__clzsi2(0xD1000000, 0);
224 try test__clzsi2(0xD2000000, 0);
225 try test__clzsi2(0xD3000000, 0);
226 try test__clzsi2(0xD4000000, 0);
227 try test__clzsi2(0xD5000000, 0);
228 try test__clzsi2(0xD6000000, 0);
229 try test__clzsi2(0xD7000000, 0);
230 try test__clzsi2(0xD8000000, 0);
231 try test__clzsi2(0xD9000000, 0);
232 try test__clzsi2(0xDA000000, 0);
233 try test__clzsi2(0xDB000000, 0);
234 try test__clzsi2(0xDC000000, 0);
235 try test__clzsi2(0xDD000000, 0);
236 try test__clzsi2(0xDE000000, 0);
237 try test__clzsi2(0xDF000000, 0);
238 try test__clzsi2(0xE0000000, 0);
239 try test__clzsi2(0xE1000000, 0);
240 try test__clzsi2(0xE2000000, 0);
241 try test__clzsi2(0xE3000000, 0);
242 try test__clzsi2(0xE4000000, 0);
243 try test__clzsi2(0xE5000000, 0);
244 try test__clzsi2(0xE6000000, 0);
245 try test__clzsi2(0xE7000000, 0);
246 try test__clzsi2(0xE8000000, 0);
247 try test__clzsi2(0xE9000000, 0);
248 try test__clzsi2(0xEA000000, 0);
249 try test__clzsi2(0xEB000000, 0);
250 try test__clzsi2(0xEC000000, 0);
251 try test__clzsi2(0xED000000, 0);
252 try test__clzsi2(0xEE000000, 0);
253 try test__clzsi2(0xEF000000, 0);
254 try test__clzsi2(0xF0000000, 0);
255 try test__clzsi2(0xF1000000, 0);
256 try test__clzsi2(0xF2000000, 0);
257 try test__clzsi2(0xF3000000, 0);
258 try test__clzsi2(0xF4000000, 0);
259 try test__clzsi2(0xF5000000, 0);
260 try test__clzsi2(0xF6000000, 0);
261 try test__clzsi2(0xF7000000, 0);
262 try test__clzsi2(0xF8000000, 0);
263 try test__clzsi2(0xF9000000, 0);
264 try test__clzsi2(0xFA000000, 0);
265 try test__clzsi2(0xFB000000, 0);
266 try test__clzsi2(0xFC000000, 0);
267 try test__clzsi2(0xFD000000, 0);
268 try test__clzsi2(0xFE000000, 0);
269 try test__clzsi2(0xFF000000, 0);
270 // arm and thumb1 assume input a != 0
271 if (!builtin.cpu.arch.isArm())
272 try test__clzsi2(0x00000000, 32);
273 try test__clzsi2(0x00000001, 31);
274 try test__clzsi2(0x00000002, 30);
275 try test__clzsi2(0x00000004, 29);
276 try test__clzsi2(0x00000008, 28);
277 try test__clzsi2(0x00000010, 27);
278 try test__clzsi2(0x00000020, 26);
279 try test__clzsi2(0x00000040, 25);
280 try test__clzsi2(0x00000080, 24);
281 try test__clzsi2(0x00000100, 23);
282 try test__clzsi2(0x00000200, 22);
283 try test__clzsi2(0x00000400, 21);
284 try test__clzsi2(0x00000800, 20);
285 try test__clzsi2(0x00001000, 19);
286 try test__clzsi2(0x00002000, 18);
287 try test__clzsi2(0x00004000, 17);
288 try test__clzsi2(0x00008000, 16);
289 try test__clzsi2(0x00010000, 15);
290 try test__clzsi2(0x00020000, 14);
291 try test__clzsi2(0x00040000, 13);
292 try test__clzsi2(0x00080000, 12);
293 try test__clzsi2(0x00100000, 11);
294 try test__clzsi2(0x00200000, 10);
295 try test__clzsi2(0x00400000, 9);
296}