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47 lines
1.2 KiB
47 lines
1.2 KiB
#pragma once
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#include "span.hpp"
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namespace hv {
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/// Print a single screen
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void print_screen(const span<unsigned char> bytes, unsigned long offset);
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inline void lookup_hex_string(std::uint64_t x, char* s)
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{
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static const char digits[513] =
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"000102030405060708090a0b0c0d0e0f"
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"101112131415161718191a1b1c1d1e1f"
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"202122232425262728292a2b2c2d2e2f"
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"303132333435363738393a3b3c3d3e3f"
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"404142434445464748494a4b4c4d4e4f"
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"505152535455565758595a5b5c5d5e5f"
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"606162636465666768696a6b6c6d6e6f"
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"707172737475767778797a7b7c7d7e7f"
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"808182838485868788898a8b8c8d8e8f"
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"909192939495969798999a9b9c9d9e9f"
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"a0a1a2a3a4a5a6a7a8a9aaabacadaeaf"
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"b0b1b2b3b4b5b6b7b8b9babbbcbdbebf"
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"c0c1c2c3c4c5c6c7c8c9cacbcccdcecf"
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"d0d1d2d3d4d5d6d7d8d9dadbdcdddedf"
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"e0e1e2e3e4e5e6e7e8e9eaebecedeeef"
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"f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff";
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int i = 7;
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const char *lut = (const char *)digits;
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while (i >= 0)
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{
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int pos = (x & 0xFF) * 2;
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char ch = lut[pos];
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#ifdef DEBUG
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if ( (i*2+1) >=16) std::terminate();
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#endif
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s[i * 2] = ch;
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ch = lut[pos + 1];
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s[i * 2 + 1] = ch;
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x >>= 8;
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i -= 1;
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}
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}
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}
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