ffsdi2_test.zig (14677B) - Raw
1 const ffs = @import("count0bits.zig"); 2 const testing = @import("std").testing; 3 4 fn test__ffsdi2(a: u64, expected: i32) !void { 5 const x = @as(i64, @bitCast(a)); 6 const result = ffs.__ffsdi2(x); 7 try testing.expectEqual(expected, result); 8 } 9 10 test "ffsdi2" { 11 try test__ffsdi2(0x00000000_00000001, 1); 12 try test__ffsdi2(0x00000000_00000002, 2); 13 try test__ffsdi2(0x00000000_00000003, 1); 14 try test__ffsdi2(0x00000000_00000004, 3); 15 try test__ffsdi2(0x00000000_00000005, 1); 16 try test__ffsdi2(0x00000000_00000006, 2); 17 try test__ffsdi2(0x00000000_00000007, 1); 18 try test__ffsdi2(0x00000000_00000008, 4); 19 try test__ffsdi2(0x00000000_00000009, 1); 20 try test__ffsdi2(0x00000000_0000000A, 2); 21 try test__ffsdi2(0x00000000_0000000B, 1); 22 try test__ffsdi2(0x00000000_0000000C, 3); 23 try test__ffsdi2(0x00000000_0000000D, 1); 24 try test__ffsdi2(0x00000000_0000000E, 2); 25 try test__ffsdi2(0x00000000_0000000F, 1); 26 try test__ffsdi2(0x00000000_00000010, 5); 27 try test__ffsdi2(0x00000000_00000011, 1); 28 try test__ffsdi2(0x00000000_00000012, 2); 29 try test__ffsdi2(0x00000000_00000013, 1); 30 try test__ffsdi2(0x00000000_00000014, 3); 31 try test__ffsdi2(0x00000000_00000015, 1); 32 try test__ffsdi2(0x00000000_00000016, 2); 33 try test__ffsdi2(0x00000000_00000017, 1); 34 try test__ffsdi2(0x00000000_00000018, 4); 35 try test__ffsdi2(0x00000000_00000019, 1); 36 try test__ffsdi2(0x00000000_0000001A, 2); 37 try test__ffsdi2(0x00000000_0000001B, 1); 38 try test__ffsdi2(0x00000000_0000001C, 3); 39 try test__ffsdi2(0x00000000_0000001D, 1); 40 try test__ffsdi2(0x00000000_0000001E, 2); 41 try test__ffsdi2(0x00000000_0000001F, 1); 42 try test__ffsdi2(0x00000000_00000020, 6); 43 try test__ffsdi2(0x00000000_00000021, 1); 44 try test__ffsdi2(0x00000000_00000022, 2); 45 try test__ffsdi2(0x00000000_00000023, 1); 46 try test__ffsdi2(0x00000000_00000024, 3); 47 try test__ffsdi2(0x00000000_00000025, 1); 48 try test__ffsdi2(0x00000000_00000026, 2); 49 try test__ffsdi2(0x00000000_00000027, 1); 50 try test__ffsdi2(0x00000000_00000028, 4); 51 try test__ffsdi2(0x00000000_00000029, 1); 52 try test__ffsdi2(0x00000000_0000002A, 2); 53 try test__ffsdi2(0x00000000_0000002B, 1); 54 try test__ffsdi2(0x00000000_0000002C, 3); 55 try test__ffsdi2(0x00000000_0000002D, 1); 56 try test__ffsdi2(0x00000000_0000002E, 2); 57 try test__ffsdi2(0x00000000_0000002F, 1); 58 try test__ffsdi2(0x00000000_00000030, 5); 59 try test__ffsdi2(0x00000000_00000031, 1); 60 try test__ffsdi2(0x00000000_00000032, 2); 61 try test__ffsdi2(0x00000000_00000033, 1); 62 try test__ffsdi2(0x00000000_00000034, 3); 63 try test__ffsdi2(0x00000000_00000035, 1); 64 try test__ffsdi2(0x00000000_00000036, 2); 65 try test__ffsdi2(0x00000000_00000037, 1); 66 try test__ffsdi2(0x00000000_00000038, 4); 67 try test__ffsdi2(0x00000000_00000039, 1); 68 try test__ffsdi2(0x00000000_0000003A, 2); 69 try test__ffsdi2(0x00000000_0000003B, 1); 70 try test__ffsdi2(0x00000000_0000003C, 3); 71 try test__ffsdi2(0x00000000_0000003D, 1); 72 try test__ffsdi2(0x00000000_0000003E, 2); 73 try test__ffsdi2(0x00000000_0000003F, 1); 74 try test__ffsdi2(0x00000000_00000040, 7); 75 try test__ffsdi2(0x00000000_00000041, 1); 76 try test__ffsdi2(0x00000000_00000042, 2); 77 try test__ffsdi2(0x00000000_00000043, 1); 78 try test__ffsdi2(0x00000000_00000044, 3); 79 try test__ffsdi2(0x00000000_00000045, 1); 80 try test__ffsdi2(0x00000000_00000046, 2); 81 try test__ffsdi2(0x00000000_00000047, 1); 82 try test__ffsdi2(0x00000000_00000048, 4); 83 try test__ffsdi2(0x00000000_00000049, 1); 84 try test__ffsdi2(0x00000000_0000004A, 2); 85 try test__ffsdi2(0x00000000_0000004B, 1); 86 try test__ffsdi2(0x00000000_0000004C, 3); 87 try test__ffsdi2(0x00000000_0000004D, 1); 88 try test__ffsdi2(0x00000000_0000004E, 2); 89 try test__ffsdi2(0x00000000_0000004F, 1); 90 try test__ffsdi2(0x00000000_00000050, 5); 91 try test__ffsdi2(0x00000000_00000051, 1); 92 try test__ffsdi2(0x00000000_00000052, 2); 93 try test__ffsdi2(0x00000000_00000053, 1); 94 try test__ffsdi2(0x00000000_00000054, 3); 95 try test__ffsdi2(0x00000000_00000055, 1); 96 try test__ffsdi2(0x00000000_00000056, 2); 97 try test__ffsdi2(0x00000000_00000057, 1); 98 try test__ffsdi2(0x00000000_00000058, 4); 99 try test__ffsdi2(0x00000000_00000059, 1); 100 try test__ffsdi2(0x00000000_0000005A, 2); 101 try test__ffsdi2(0x00000000_0000005B, 1); 102 try test__ffsdi2(0x00000000_0000005C, 3); 103 try test__ffsdi2(0x00000000_0000005D, 1); 104 try test__ffsdi2(0x00000000_0000005E, 2); 105 try test__ffsdi2(0x00000000_0000005F, 1); 106 try test__ffsdi2(0x00000000_00000060, 6); 107 try test__ffsdi2(0x00000000_00000061, 1); 108 try test__ffsdi2(0x00000000_00000062, 2); 109 try test__ffsdi2(0x00000000_00000063, 1); 110 try test__ffsdi2(0x00000000_00000064, 3); 111 try test__ffsdi2(0x00000000_00000065, 1); 112 try test__ffsdi2(0x00000000_00000066, 2); 113 try test__ffsdi2(0x00000000_00000067, 1); 114 try test__ffsdi2(0x00000000_00000068, 4); 115 try test__ffsdi2(0x00000000_00000069, 1); 116 try test__ffsdi2(0x00000000_0000006A, 2); 117 try test__ffsdi2(0x00000000_0000006B, 1); 118 try test__ffsdi2(0x00000000_0000006C, 3); 119 try test__ffsdi2(0x00000000_0000006D, 1); 120 try test__ffsdi2(0x00000000_0000006E, 2); 121 try test__ffsdi2(0x00000000_0000006F, 1); 122 try test__ffsdi2(0x00000000_00000070, 5); 123 try test__ffsdi2(0x00000000_00000071, 1); 124 try test__ffsdi2(0x00000000_00000072, 2); 125 try test__ffsdi2(0x00000000_00000073, 1); 126 try test__ffsdi2(0x00000000_00000074, 3); 127 try test__ffsdi2(0x00000000_00000075, 1); 128 try test__ffsdi2(0x00000000_00000076, 2); 129 try test__ffsdi2(0x00000000_00000077, 1); 130 try test__ffsdi2(0x00000000_00000078, 4); 131 try test__ffsdi2(0x00000000_00000079, 1); 132 try test__ffsdi2(0x00000000_0000007A, 2); 133 try test__ffsdi2(0x00000000_0000007B, 1); 134 try test__ffsdi2(0x00000000_0000007C, 3); 135 try test__ffsdi2(0x00000000_0000007D, 1); 136 try test__ffsdi2(0x00000000_0000007E, 2); 137 try test__ffsdi2(0x00000000_0000007F, 1); 138 try test__ffsdi2(0x00000000_00000080, 8); 139 try test__ffsdi2(0x00000000_00000081, 1); 140 try test__ffsdi2(0x00000000_00000082, 2); 141 try test__ffsdi2(0x00000000_00000083, 1); 142 try test__ffsdi2(0x00000000_00000084, 3); 143 try test__ffsdi2(0x00000000_00000085, 1); 144 try test__ffsdi2(0x00000000_00000086, 2); 145 try test__ffsdi2(0x00000000_00000087, 1); 146 try test__ffsdi2(0x00000000_00000088, 4); 147 try test__ffsdi2(0x00000000_00000089, 1); 148 try test__ffsdi2(0x00000000_0000008A, 2); 149 try test__ffsdi2(0x00000000_0000008B, 1); 150 try test__ffsdi2(0x00000000_0000008C, 3); 151 try test__ffsdi2(0x00000000_0000008D, 1); 152 try test__ffsdi2(0x00000000_0000008E, 2); 153 try test__ffsdi2(0x00000000_0000008F, 1); 154 try test__ffsdi2(0x00000000_00000090, 5); 155 try test__ffsdi2(0x00000000_00000091, 1); 156 try test__ffsdi2(0x00000000_00000092, 2); 157 try test__ffsdi2(0x00000000_00000093, 1); 158 try test__ffsdi2(0x00000000_00000094, 3); 159 try test__ffsdi2(0x00000000_00000095, 1); 160 try test__ffsdi2(0x00000000_00000096, 2); 161 try test__ffsdi2(0x00000000_00000097, 1); 162 try test__ffsdi2(0x00000000_00000098, 4); 163 try test__ffsdi2(0x00000000_00000099, 1); 164 try test__ffsdi2(0x00000000_0000009A, 2); 165 try test__ffsdi2(0x00000000_0000009B, 1); 166 try test__ffsdi2(0x00000000_0000009C, 3); 167 try test__ffsdi2(0x00000000_0000009D, 1); 168 try test__ffsdi2(0x00000000_0000009E, 2); 169 try test__ffsdi2(0x00000000_0000009F, 1); 170 try test__ffsdi2(0x00000000_000000A0, 6); 171 try test__ffsdi2(0x00000000_000000A1, 1); 172 try test__ffsdi2(0x00000000_000000A2, 2); 173 try test__ffsdi2(0x00000000_000000A3, 1); 174 try test__ffsdi2(0x00000000_000000A4, 3); 175 try test__ffsdi2(0x00000000_000000A5, 1); 176 try test__ffsdi2(0x00000000_000000A6, 2); 177 try test__ffsdi2(0x00000000_000000A7, 1); 178 try test__ffsdi2(0x00000000_000000A8, 4); 179 try test__ffsdi2(0x00000000_000000A9, 1); 180 try test__ffsdi2(0x00000000_000000AA, 2); 181 try test__ffsdi2(0x00000000_000000AB, 1); 182 try test__ffsdi2(0x00000000_000000AC, 3); 183 try test__ffsdi2(0x00000000_000000AD, 1); 184 try test__ffsdi2(0x00000000_000000AE, 2); 185 try test__ffsdi2(0x00000000_000000AF, 1); 186 try test__ffsdi2(0x00000000_000000B0, 5); 187 try test__ffsdi2(0x00000000_000000B1, 1); 188 try test__ffsdi2(0x00000000_000000B2, 2); 189 try test__ffsdi2(0x00000000_000000B3, 1); 190 try test__ffsdi2(0x00000000_000000B4, 3); 191 try test__ffsdi2(0x00000000_000000B5, 1); 192 try test__ffsdi2(0x00000000_000000B6, 2); 193 try test__ffsdi2(0x00000000_000000B7, 1); 194 try test__ffsdi2(0x00000000_000000B8, 4); 195 try test__ffsdi2(0x00000000_000000B9, 1); 196 try test__ffsdi2(0x00000000_000000BA, 2); 197 try test__ffsdi2(0x00000000_000000BB, 1); 198 try test__ffsdi2(0x00000000_000000BC, 3); 199 try test__ffsdi2(0x00000000_000000BD, 1); 200 try test__ffsdi2(0x00000000_000000BE, 2); 201 try test__ffsdi2(0x00000000_000000BF, 1); 202 try test__ffsdi2(0x00000000_000000C0, 7); 203 try test__ffsdi2(0x00000000_000000C1, 1); 204 try test__ffsdi2(0x00000000_000000C2, 2); 205 try test__ffsdi2(0x00000000_000000C3, 1); 206 try test__ffsdi2(0x00000000_000000C4, 3); 207 try test__ffsdi2(0x00000000_000000C5, 1); 208 try test__ffsdi2(0x00000000_000000C6, 2); 209 try test__ffsdi2(0x00000000_000000C7, 1); 210 try test__ffsdi2(0x00000000_000000C8, 4); 211 try test__ffsdi2(0x00000000_000000C9, 1); 212 try test__ffsdi2(0x00000000_000000CA, 2); 213 try test__ffsdi2(0x00000000_000000CB, 1); 214 try test__ffsdi2(0x00000000_000000CC, 3); 215 try test__ffsdi2(0x00000000_000000CD, 1); 216 try test__ffsdi2(0x00000000_000000CE, 2); 217 try test__ffsdi2(0x00000000_000000CF, 1); 218 try test__ffsdi2(0x00000000_000000D0, 5); 219 try test__ffsdi2(0x00000000_000000D1, 1); 220 try test__ffsdi2(0x00000000_000000D2, 2); 221 try test__ffsdi2(0x00000000_000000D3, 1); 222 try test__ffsdi2(0x00000000_000000D4, 3); 223 try test__ffsdi2(0x00000000_000000D5, 1); 224 try test__ffsdi2(0x00000000_000000D6, 2); 225 try test__ffsdi2(0x00000000_000000D7, 1); 226 try test__ffsdi2(0x00000000_000000D8, 4); 227 try test__ffsdi2(0x00000000_000000D9, 1); 228 try test__ffsdi2(0x00000000_000000DA, 2); 229 try test__ffsdi2(0x00000000_000000DB, 1); 230 try test__ffsdi2(0x00000000_000000DC, 3); 231 try test__ffsdi2(0x00000000_000000DD, 1); 232 try test__ffsdi2(0x00000000_000000DE, 2); 233 try test__ffsdi2(0x00000000_000000DF, 1); 234 try test__ffsdi2(0x00000000_000000E0, 6); 235 try test__ffsdi2(0x00000000_000000E1, 1); 236 try test__ffsdi2(0x00000000_000000E2, 2); 237 try test__ffsdi2(0x00000000_000000E3, 1); 238 try test__ffsdi2(0x00000000_000000E4, 3); 239 try test__ffsdi2(0x00000000_000000E5, 1); 240 try test__ffsdi2(0x00000000_000000E6, 2); 241 try test__ffsdi2(0x00000000_000000E7, 1); 242 try test__ffsdi2(0x00000000_000000E8, 4); 243 try test__ffsdi2(0x00000000_000000E9, 1); 244 try test__ffsdi2(0x00000000_000000EA, 2); 245 try test__ffsdi2(0x00000000_000000EB, 1); 246 try test__ffsdi2(0x00000000_000000EC, 3); 247 try test__ffsdi2(0x00000000_000000ED, 1); 248 try test__ffsdi2(0x00000000_000000EE, 2); 249 try test__ffsdi2(0x00000000_000000EF, 1); 250 try test__ffsdi2(0x00000000_000000F0, 5); 251 try test__ffsdi2(0x00000000_000000F1, 1); 252 try test__ffsdi2(0x00000000_000000F2, 2); 253 try test__ffsdi2(0x00000000_000000F3, 1); 254 try test__ffsdi2(0x00000000_000000F4, 3); 255 try test__ffsdi2(0x00000000_000000F5, 1); 256 try test__ffsdi2(0x00000000_000000F6, 2); 257 try test__ffsdi2(0x00000000_000000F7, 1); 258 try test__ffsdi2(0x00000000_000000F8, 4); 259 try test__ffsdi2(0x00000000_000000F9, 1); 260 try test__ffsdi2(0x00000000_000000FA, 2); 261 try test__ffsdi2(0x00000000_000000FB, 1); 262 try test__ffsdi2(0x00000000_000000FC, 3); 263 try test__ffsdi2(0x00000000_000000FD, 1); 264 try test__ffsdi2(0x00000000_000000FE, 2); 265 try test__ffsdi2(0x00000000_000000FF, 1); 266 267 try test__ffsdi2(0x00000000_00000000, 0); 268 try test__ffsdi2(0x80000000_00000000, 64); 269 try test__ffsdi2(0x40000000_00000000, 63); 270 try test__ffsdi2(0x20000000_00000000, 62); 271 try test__ffsdi2(0x10000000_00000000, 61); 272 try test__ffsdi2(0x08000000_00000000, 60); 273 try test__ffsdi2(0x04000000_00000000, 59); 274 try test__ffsdi2(0x02000000_00000000, 58); 275 try test__ffsdi2(0x01000000_00000000, 57); 276 try test__ffsdi2(0x00800000_00000000, 56); 277 try test__ffsdi2(0x00400000_00000000, 55); 278 try test__ffsdi2(0x00200000_00000000, 54); 279 try test__ffsdi2(0x00100000_00000000, 53); 280 try test__ffsdi2(0x00080000_00000000, 52); 281 try test__ffsdi2(0x00040000_00000000, 51); 282 try test__ffsdi2(0x00020000_00000000, 50); 283 try test__ffsdi2(0x00010000_00000000, 49); 284 try test__ffsdi2(0x00008000_00000000, 48); 285 try test__ffsdi2(0x00004000_00000000, 47); 286 try test__ffsdi2(0x00002000_00000000, 46); 287 try test__ffsdi2(0x00001000_00000000, 45); 288 try test__ffsdi2(0x00000800_00000000, 44); 289 try test__ffsdi2(0x00000400_00000000, 43); 290 try test__ffsdi2(0x00000200_00000000, 42); 291 try test__ffsdi2(0x00000100_00000000, 41); 292 try test__ffsdi2(0x00000080_00000000, 40); 293 try test__ffsdi2(0x00000040_00000000, 39); 294 try test__ffsdi2(0x00000020_00000000, 38); 295 try test__ffsdi2(0x00000010_00000000, 37); 296 try test__ffsdi2(0x00000008_00000000, 36); 297 try test__ffsdi2(0x00000004_00000000, 35); 298 try test__ffsdi2(0x00000002_00000000, 34); 299 try test__ffsdi2(0x00000001_00000000, 33); 300 301 try test__ffsdi2(0x00000000_80000000, 32); 302 try test__ffsdi2(0x00000000_40000000, 31); 303 try test__ffsdi2(0x00000000_20000000, 30); 304 try test__ffsdi2(0x00000000_10000000, 29); 305 try test__ffsdi2(0x00000000_08000000, 28); 306 try test__ffsdi2(0x00000000_04000000, 27); 307 try test__ffsdi2(0x00000000_02000000, 26); 308 try test__ffsdi2(0x00000000_01000000, 25); 309 try test__ffsdi2(0x00000000_00800000, 24); 310 try test__ffsdi2(0x00000000_00400000, 23); 311 try test__ffsdi2(0x00000000_00200000, 22); 312 try test__ffsdi2(0x00000000_00100000, 21); 313 try test__ffsdi2(0x00000000_00080000, 20); 314 try test__ffsdi2(0x00000000_00040000, 19); 315 try test__ffsdi2(0x00000000_00020000, 18); 316 try test__ffsdi2(0x00000000_00010000, 17); 317 try test__ffsdi2(0x00000000_00008000, 16); 318 try test__ffsdi2(0x00000000_00004000, 15); 319 try test__ffsdi2(0x00000000_00002000, 14); 320 try test__ffsdi2(0x00000000_00001000, 13); 321 try test__ffsdi2(0x00000000_00000800, 12); 322 try test__ffsdi2(0x00000000_00000400, 11); 323 try test__ffsdi2(0x00000000_00000200, 10); 324 try test__ffsdi2(0x00000000_00000100, 9); 325 }