Lev Walkin | 59b176e | 2005-11-26 11:25:14 +0000 | [diff] [blame] | 1 | #include <per_support.c> |
| 2 | #include <assert.h> |
| 3 | |
| 4 | int |
| 5 | main() { |
| 6 | uint8_t buf[] = { 0xB7, 0x19, 0x2F, 0xEE, 0xAD }; |
| 7 | uint8_t tmpbuf[10]; |
| 8 | int32_t z; |
| 9 | asn_per_data_t pos; |
| 10 | |
| 11 | pos.buffer = buf; |
| 12 | pos.nboff = 0; |
| 13 | pos.nbits = sizeof(buf) * 8; |
| 14 | |
| 15 | z = per_get_few_bits(&pos, 32); |
| 16 | assert(z == -1); |
Lev Walkin | 6036488 | 2005-11-28 06:58:11 +0000 | [diff] [blame] | 17 | assert(pos.nbits == sizeof(buf) * 8); |
Lev Walkin | 59b176e | 2005-11-26 11:25:14 +0000 | [diff] [blame] | 18 | |
| 19 | z = per_get_few_bits(&pos, 0); |
| 20 | assert(z == 0); |
| 21 | assert(pos.nboff == 0); |
Lev Walkin | 6036488 | 2005-11-28 06:58:11 +0000 | [diff] [blame] | 22 | assert(pos.nbits == sizeof(buf) * 8); |
Lev Walkin | 59b176e | 2005-11-26 11:25:14 +0000 | [diff] [blame] | 23 | |
| 24 | z = per_get_few_bits(&pos, 1); |
| 25 | assert(z == 1); |
| 26 | assert(pos.nboff == 1); |
Lev Walkin | 6036488 | 2005-11-28 06:58:11 +0000 | [diff] [blame] | 27 | assert(pos.nbits == sizeof(buf) * 8); |
Lev Walkin | 59b176e | 2005-11-26 11:25:14 +0000 | [diff] [blame] | 28 | |
| 29 | z = per_get_few_bits(&pos, 2); |
| 30 | assert(z == 1); |
| 31 | assert(pos.nboff == 3); |
Lev Walkin | 6036488 | 2005-11-28 06:58:11 +0000 | [diff] [blame] | 32 | assert(pos.nbits == sizeof(buf) * 8); |
Lev Walkin | 59b176e | 2005-11-26 11:25:14 +0000 | [diff] [blame] | 33 | |
| 34 | z = per_get_few_bits(&pos, 2); |
| 35 | assert(z == 2); |
| 36 | assert(pos.nboff == 5); |
Lev Walkin | 6036488 | 2005-11-28 06:58:11 +0000 | [diff] [blame] | 37 | assert(pos.nbits == sizeof(buf) * 8); |
Lev Walkin | 59b176e | 2005-11-26 11:25:14 +0000 | [diff] [blame] | 38 | |
| 39 | z = per_get_few_bits(&pos, 3); |
| 40 | assert(z == 7); |
| 41 | assert(pos.nboff == 8); |
| 42 | assert(pos.nbits == sizeof(buf) * 8); |
| 43 | |
| 44 | z = per_get_few_bits(&pos, 8); |
| 45 | assert(z == 0x19); |
| 46 | assert(pos.nboff == 8); |
| 47 | assert(pos.nbits == (sizeof(buf) - 1) * 8); |
| 48 | |
| 49 | z = per_get_few_bits(&pos, 1); |
| 50 | assert(z == 0); |
| 51 | assert(pos.nboff == 1); |
| 52 | assert(pos.nbits == (sizeof(buf) - 2) * 8); |
| 53 | |
| 54 | z = per_get_few_bits(&pos, 3); |
| 55 | assert(z == 2); |
| 56 | assert(pos.nboff == 4); |
| 57 | assert(pos.nbits == (sizeof(buf) - 2) * 8); |
| 58 | |
| 59 | z = per_get_few_bits(&pos, 8); |
| 60 | assert(z == 254); |
| 61 | assert(pos.nboff == 12); |
| 62 | |
| 63 | pos.buffer = buf; |
| 64 | pos.nboff = 2; |
| 65 | pos.nbits = sizeof(buf) * 8; |
| 66 | z = per_get_few_bits(&pos, 24); |
| 67 | assert(z == 14443711); |
| 68 | |
Lev Walkin | 6036488 | 2005-11-28 06:58:11 +0000 | [diff] [blame] | 69 | /* Get full 31-bit range */ |
| 70 | pos.buffer = buf; |
| 71 | pos.nboff = 7; |
| 72 | pos.nbits = sizeof(buf) * 8; |
| 73 | z = per_get_few_bits(&pos, 31); |
| 74 | assert(z == 1179384747); |
| 75 | |
| 76 | /* Get a bit shifted range */ |
| 77 | pos.buffer = buf; |
| 78 | pos.nboff = 6; |
| 79 | pos.nbits = sizeof(buf) * 8; |
| 80 | z = per_get_few_bits(&pos, 31); |
| 81 | assert(z == 1663434197); |
| 82 | |
Lev Walkin | 59b176e | 2005-11-26 11:25:14 +0000 | [diff] [blame] | 83 | pos.buffer = buf; |
| 84 | pos.nboff = 0; |
| 85 | pos.nbits = sizeof(buf) * 8; |
| 86 | z = per_get_many_bits(&pos, tmpbuf, 0, sizeof(buf) * 8); |
| 87 | assert(z == 0); |
| 88 | assert(buf[0] == tmpbuf[0]); |
| 89 | assert(buf[1] == tmpbuf[1]); |
| 90 | assert(buf[2] == tmpbuf[2]); |
| 91 | assert(buf[3] == tmpbuf[3]); |
| 92 | assert(buf[4] == tmpbuf[4]); |
| 93 | |
| 94 | pos.buffer = buf; |
| 95 | pos.nboff = 1; |
| 96 | pos.nbits = sizeof(buf) * 8; |
| 97 | z = per_get_many_bits(&pos, tmpbuf, 0, sizeof(buf) * 8); |
| 98 | assert(z == -1); |
| 99 | |
| 100 | pos.buffer = buf; |
| 101 | pos.nboff = 1; |
| 102 | pos.nbits = sizeof(buf) * 8; |
| 103 | z = per_get_many_bits(&pos, tmpbuf, 0, sizeof(buf) * 8 - 1); |
| 104 | assert(z == 0); |
| 105 | assert(tmpbuf[0] == 110); |
| 106 | assert(tmpbuf[1] == 50); |
| 107 | assert(tmpbuf[2] == 95); |
| 108 | assert(tmpbuf[3] == 221); |
| 109 | assert(tmpbuf[4] == 90); |
| 110 | |
| 111 | pos.buffer = buf; |
| 112 | pos.nboff = 1; |
| 113 | pos.nbits = sizeof(buf) * 8; |
| 114 | z = per_get_many_bits(&pos, tmpbuf, 1, sizeof(buf) * 8 - 1); |
| 115 | assert(z == 0); |
| 116 | assert(tmpbuf[0] == 55); |
| 117 | assert(tmpbuf[0] != buf[0]); |
| 118 | assert(tmpbuf[1] == buf[1]); |
| 119 | assert(tmpbuf[2] == buf[2]); |
| 120 | assert(tmpbuf[3] == buf[3]); |
| 121 | assert(tmpbuf[4] == buf[4]); |
| 122 | |
| 123 | return 0; |
| 124 | } |