Meg's Mirrors

zig

1	const ffs = @import("count0bits.zig");
2	const testing = @import("std").testing;
3
4	fn test__ffssi2(a: u32, expected: i32) !void {
5	const x = @as(i32, @bitCast(a));
6	const result = ffs.__ffssi2(x);
7	try testing.expectEqual(expected, result);
8	}
9
10	test "ffssi2" {
11	try test__ffssi2(0x00000001, 1);
12	try test__ffssi2(0x00000002, 2);
13	try test__ffssi2(0x00000003, 1);
14	try test__ffssi2(0x00000004, 3);
15	try test__ffssi2(0x00000005, 1);
16	try test__ffssi2(0x00000006, 2);
17	try test__ffssi2(0x00000007, 1);
18	try test__ffssi2(0x00000008, 4);
19	try test__ffssi2(0x00000009, 1);
20	try test__ffssi2(0x0000000A, 2);
21	try test__ffssi2(0x0000000B, 1);
22	try test__ffssi2(0x0000000C, 3);
23	try test__ffssi2(0x0000000D, 1);
24	try test__ffssi2(0x0000000E, 2);
25	try test__ffssi2(0x0000000F, 1);
26	try test__ffssi2(0x00000010, 5);
27	try test__ffssi2(0x00000011, 1);
28	try test__ffssi2(0x00000012, 2);
29	try test__ffssi2(0x00000013, 1);
30	try test__ffssi2(0x00000014, 3);
31	try test__ffssi2(0x00000015, 1);
32	try test__ffssi2(0x00000016, 2);
33	try test__ffssi2(0x00000017, 1);
34	try test__ffssi2(0x00000018, 4);
35	try test__ffssi2(0x00000019, 1);
36	try test__ffssi2(0x0000001A, 2);
37	try test__ffssi2(0x0000001B, 1);
38	try test__ffssi2(0x0000001C, 3);
39	try test__ffssi2(0x0000001D, 1);
40	try test__ffssi2(0x0000001E, 2);
41	try test__ffssi2(0x0000001F, 1);
42	try test__ffssi2(0x00000020, 6);
43	try test__ffssi2(0x00000021, 1);
44	try test__ffssi2(0x00000022, 2);
45	try test__ffssi2(0x00000023, 1);
46	try test__ffssi2(0x00000024, 3);
47	try test__ffssi2(0x00000025, 1);
48	try test__ffssi2(0x00000026, 2);
49	try test__ffssi2(0x00000027, 1);
50	try test__ffssi2(0x00000028, 4);
51	try test__ffssi2(0x00000029, 1);
52	try test__ffssi2(0x0000002A, 2);
53	try test__ffssi2(0x0000002B, 1);
54	try test__ffssi2(0x0000002C, 3);
55	try test__ffssi2(0x0000002D, 1);
56	try test__ffssi2(0x0000002E, 2);
57	try test__ffssi2(0x0000002F, 1);
58	try test__ffssi2(0x00000030, 5);
59	try test__ffssi2(0x00000031, 1);
60	try test__ffssi2(0x00000032, 2);
61	try test__ffssi2(0x00000033, 1);
62	try test__ffssi2(0x00000034, 3);
63	try test__ffssi2(0x00000035, 1);
64	try test__ffssi2(0x00000036, 2);
65	try test__ffssi2(0x00000037, 1);
66	try test__ffssi2(0x00000038, 4);
67	try test__ffssi2(0x00000039, 1);
68	try test__ffssi2(0x0000003A, 2);
69	try test__ffssi2(0x0000003B, 1);
70	try test__ffssi2(0x0000003C, 3);
71	try test__ffssi2(0x0000003D, 1);
72	try test__ffssi2(0x0000003E, 2);
73	try test__ffssi2(0x0000003F, 1);
74	try test__ffssi2(0x00000040, 7);
75	try test__ffssi2(0x00000041, 1);
76	try test__ffssi2(0x00000042, 2);
77	try test__ffssi2(0x00000043, 1);
78	try test__ffssi2(0x00000044, 3);
79	try test__ffssi2(0x00000045, 1);
80	try test__ffssi2(0x00000046, 2);
81	try test__ffssi2(0x00000047, 1);
82	try test__ffssi2(0x00000048, 4);
83	try test__ffssi2(0x00000049, 1);
84	try test__ffssi2(0x0000004A, 2);
85	try test__ffssi2(0x0000004B, 1);
86	try test__ffssi2(0x0000004C, 3);
87	try test__ffssi2(0x0000004D, 1);
88	try test__ffssi2(0x0000004E, 2);
89	try test__ffssi2(0x0000004F, 1);
90	try test__ffssi2(0x00000050, 5);
91	try test__ffssi2(0x00000051, 1);
92	try test__ffssi2(0x00000052, 2);
93	try test__ffssi2(0x00000053, 1);
94	try test__ffssi2(0x00000054, 3);
95	try test__ffssi2(0x00000055, 1);
96	try test__ffssi2(0x00000056, 2);
97	try test__ffssi2(0x00000057, 1);
98	try test__ffssi2(0x00000058, 4);
99	try test__ffssi2(0x00000059, 1);
100	try test__ffssi2(0x0000005A, 2);
101	try test__ffssi2(0x0000005B, 1);
102	try test__ffssi2(0x0000005C, 3);
103	try test__ffssi2(0x0000005D, 1);
104	try test__ffssi2(0x0000005E, 2);
105	try test__ffssi2(0x0000005F, 1);
106	try test__ffssi2(0x00000060, 6);
107	try test__ffssi2(0x00000061, 1);
108	try test__ffssi2(0x00000062, 2);
109	try test__ffssi2(0x00000063, 1);
110	try test__ffssi2(0x00000064, 3);
111	try test__ffssi2(0x00000065, 1);
112	try test__ffssi2(0x00000066, 2);
113	try test__ffssi2(0x00000067, 1);
114	try test__ffssi2(0x00000068, 4);
115	try test__ffssi2(0x00000069, 1);
116	try test__ffssi2(0x0000006A, 2);
117	try test__ffssi2(0x0000006B, 1);
118	try test__ffssi2(0x0000006C, 3);
119	try test__ffssi2(0x0000006D, 1);
120	try test__ffssi2(0x0000006E, 2);
121	try test__ffssi2(0x0000006F, 1);
122	try test__ffssi2(0x00000070, 5);
123	try test__ffssi2(0x00000071, 1);
124	try test__ffssi2(0x00000072, 2);
125	try test__ffssi2(0x00000073, 1);
126	try test__ffssi2(0x00000074, 3);
127	try test__ffssi2(0x00000075, 1);
128	try test__ffssi2(0x00000076, 2);
129	try test__ffssi2(0x00000077, 1);
130	try test__ffssi2(0x00000078, 4);
131	try test__ffssi2(0x00000079, 1);
132	try test__ffssi2(0x0000007A, 2);
133	try test__ffssi2(0x0000007B, 1);
134	try test__ffssi2(0x0000007C, 3);
135	try test__ffssi2(0x0000007D, 1);
136	try test__ffssi2(0x0000007E, 2);
137	try test__ffssi2(0x0000007F, 1);
138	try test__ffssi2(0x00000080, 8);
139	try test__ffssi2(0x00000081, 1);
140	try test__ffssi2(0x00000082, 2);
141	try test__ffssi2(0x00000083, 1);
142	try test__ffssi2(0x00000084, 3);
143	try test__ffssi2(0x00000085, 1);
144	try test__ffssi2(0x00000086, 2);
145	try test__ffssi2(0x00000087, 1);
146	try test__ffssi2(0x00000088, 4);
147	try test__ffssi2(0x00000089, 1);
148	try test__ffssi2(0x0000008A, 2);
149	try test__ffssi2(0x0000008B, 1);
150	try test__ffssi2(0x0000008C, 3);
151	try test__ffssi2(0x0000008D, 1);
152	try test__ffssi2(0x0000008E, 2);
153	try test__ffssi2(0x0000008F, 1);
154	try test__ffssi2(0x00000090, 5);
155	try test__ffssi2(0x00000091, 1);
156	try test__ffssi2(0x00000092, 2);
157	try test__ffssi2(0x00000093, 1);
158	try test__ffssi2(0x00000094, 3);
159	try test__ffssi2(0x00000095, 1);
160	try test__ffssi2(0x00000096, 2);
161	try test__ffssi2(0x00000097, 1);
162	try test__ffssi2(0x00000098, 4);
163	try test__ffssi2(0x00000099, 1);
164	try test__ffssi2(0x0000009A, 2);
165	try test__ffssi2(0x0000009B, 1);
166	try test__ffssi2(0x0000009C, 3);
167	try test__ffssi2(0x0000009D, 1);
168	try test__ffssi2(0x0000009E, 2);
169	try test__ffssi2(0x0000009F, 1);
170	try test__ffssi2(0x000000A0, 6);
171	try test__ffssi2(0x000000A1, 1);
172	try test__ffssi2(0x000000A2, 2);
173	try test__ffssi2(0x000000A3, 1);
174	try test__ffssi2(0x000000A4, 3);
175	try test__ffssi2(0x000000A5, 1);
176	try test__ffssi2(0x000000A6, 2);
177	try test__ffssi2(0x000000A7, 1);
178	try test__ffssi2(0x000000A8, 4);
179	try test__ffssi2(0x000000A9, 1);
180	try test__ffssi2(0x000000AA, 2);
181	try test__ffssi2(0x000000AB, 1);
182	try test__ffssi2(0x000000AC, 3);
183	try test__ffssi2(0x000000AD, 1);
184	try test__ffssi2(0x000000AE, 2);
185	try test__ffssi2(0x000000AF, 1);
186	try test__ffssi2(0x000000B0, 5);
187	try test__ffssi2(0x000000B1, 1);
188	try test__ffssi2(0x000000B2, 2);
189	try test__ffssi2(0x000000B3, 1);
190	try test__ffssi2(0x000000B4, 3);
191	try test__ffssi2(0x000000B5, 1);
192	try test__ffssi2(0x000000B6, 2);
193	try test__ffssi2(0x000000B7, 1);
194	try test__ffssi2(0x000000B8, 4);
195	try test__ffssi2(0x000000B9, 1);
196	try test__ffssi2(0x000000BA, 2);
197	try test__ffssi2(0x000000BB, 1);
198	try test__ffssi2(0x000000BC, 3);
199	try test__ffssi2(0x000000BD, 1);
200	try test__ffssi2(0x000000BE, 2);
201	try test__ffssi2(0x000000BF, 1);
202	try test__ffssi2(0x000000C0, 7);
203	try test__ffssi2(0x000000C1, 1);
204	try test__ffssi2(0x000000C2, 2);
205	try test__ffssi2(0x000000C3, 1);
206	try test__ffssi2(0x000000C4, 3);
207	try test__ffssi2(0x000000C5, 1);
208	try test__ffssi2(0x000000C6, 2);
209	try test__ffssi2(0x000000C7, 1);
210	try test__ffssi2(0x000000C8, 4);
211	try test__ffssi2(0x000000C9, 1);
212	try test__ffssi2(0x000000CA, 2);
213	try test__ffssi2(0x000000CB, 1);
214	try test__ffssi2(0x000000CC, 3);
215	try test__ffssi2(0x000000CD, 1);
216	try test__ffssi2(0x000000CE, 2);
217	try test__ffssi2(0x000000CF, 1);
218	try test__ffssi2(0x000000D0, 5);
219	try test__ffssi2(0x000000D1, 1);
220	try test__ffssi2(0x000000D2, 2);
221	try test__ffssi2(0x000000D3, 1);
222	try test__ffssi2(0x000000D4, 3);
223	try test__ffssi2(0x000000D5, 1);
224	try test__ffssi2(0x000000D6, 2);
225	try test__ffssi2(0x000000D7, 1);
226	try test__ffssi2(0x000000D8, 4);
227	try test__ffssi2(0x000000D9, 1);
228	try test__ffssi2(0x000000DA, 2);
229	try test__ffssi2(0x000000DB, 1);
230	try test__ffssi2(0x000000DC, 3);
231	try test__ffssi2(0x000000DD, 1);
232	try test__ffssi2(0x000000DE, 2);
233	try test__ffssi2(0x000000DF, 1);
234	try test__ffssi2(0x000000E0, 6);
235	try test__ffssi2(0x000000E1, 1);
236	try test__ffssi2(0x000000E2, 2);
237	try test__ffssi2(0x000000E3, 1);
238	try test__ffssi2(0x000000E4, 3);
239	try test__ffssi2(0x000000E5, 1);
240	try test__ffssi2(0x000000E6, 2);
241	try test__ffssi2(0x000000E7, 1);
242	try test__ffssi2(0x000000E8, 4);
243	try test__ffssi2(0x000000E9, 1);
244	try test__ffssi2(0x000000EA, 2);
245	try test__ffssi2(0x000000EB, 1);
246	try test__ffssi2(0x000000EC, 3);
247	try test__ffssi2(0x000000ED, 1);
248	try test__ffssi2(0x000000EE, 2);
249	try test__ffssi2(0x000000EF, 1);
250	try test__ffssi2(0x000000F0, 5);
251	try test__ffssi2(0x000000F1, 1);
252	try test__ffssi2(0x000000F2, 2);
253	try test__ffssi2(0x000000F3, 1);
254	try test__ffssi2(0x000000F4, 3);
255	try test__ffssi2(0x000000F5, 1);
256	try test__ffssi2(0x000000F6, 2);
257	try test__ffssi2(0x000000F7, 1);
258	try test__ffssi2(0x000000F8, 4);
259	try test__ffssi2(0x000000F9, 1);
260	try test__ffssi2(0x000000FA, 2);
261	try test__ffssi2(0x000000FB, 1);
262	try test__ffssi2(0x000000FC, 3);
263	try test__ffssi2(0x000000FD, 1);
264	try test__ffssi2(0x000000FE, 2);
265	try test__ffssi2(0x000000FF, 1);
266
267	try test__ffssi2(0x00000000, 0);
268	try test__ffssi2(0x80000000, 32);
269	try test__ffssi2(0x40000000, 31);
270	try test__ffssi2(0x20000000, 30);
271	try test__ffssi2(0x10000000, 29);
272	try test__ffssi2(0x08000000, 28);
273	try test__ffssi2(0x04000000, 27);
274	try test__ffssi2(0x02000000, 26);
275	try test__ffssi2(0x01000000, 25);
276	try test__ffssi2(0x00800000, 24);
277	try test__ffssi2(0x00400000, 23);
278	try test__ffssi2(0x00200000, 22);
279	try test__ffssi2(0x00100000, 21);
280	try test__ffssi2(0x00080000, 20);
281	try test__ffssi2(0x00040000, 19);
282	try test__ffssi2(0x00020000, 18);
283	try test__ffssi2(0x00010000, 17);
284	try test__ffssi2(0x00008000, 16);
285	try test__ffssi2(0x00004000, 15);
286	try test__ffssi2(0x00002000, 14);
287	try test__ffssi2(0x00001000, 13);
288	try test__ffssi2(0x00000800, 12);
289	try test__ffssi2(0x00000400, 11);
290	try test__ffssi2(0x00000200, 10);
291	try test__ffssi2(0x00000100, 9);
292	}