File size: 958 Bytes
f25167e | 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 | {
"name": "loop_005",
"op_type": "loop_005",
"description": "Compute the length of many short null-terminated strings",
"tags": [
"simd-loop"
],
"axes": {
"N": {
"type": "var",
"description": "Buffer length (bytes)"
}
},
"inputs": {
"p": {
"shape": [
"N"
],
"dtype": "uint8"
}
},
"outputs": {
"checksum": {
"shape": null,
"dtype": "uint32",
"description": "Scalar checksum"
}
},
"reference": "import numpy as np\n\ndef run(p):\n b = p; n = len(b); i = 0; res = 0\n while i < n:\n j = i\n while j < n and int(b[j]) != 0: j += 1\n length = j - i; i = j + 1\n res = (res + 1) & 0xffffffff\n res ^= ((length % 0xffff) << 16) & 0xffffffff\n res &= 0xffffffff\n return np.uint32(res)\n",
"simd_loop_meta": {
"output_inplace": false,
"array_pad": 0,
"scratch": [],
"axes_order": []
}
}
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