#include #include #include #include #include #include template void timeIt(int count, FT fn) { auto start = std::chrono::high_resolution_clock::now(); int reg; uint32_t val; int size; for (int iii = 0; iii < count; iii++) { reg = iii % 255; val = iii * (reg * 3 + 7); size = reg % 4 + 1; fn(reg, val, size); } std::cout << reg << " & " << val << " = " << fn(reg, val, size) << '\n'; auto end = std::chrono::high_resolution_clock::now(); std::chrono::duration elapsed = end - start; printf("Time: %lf ms\n", (elapsed.count() / count) * 1000); } int main() { int count = 1000000; // farnap timeIt(count, [](int reg, uint32_t val, int size){ static const std::array cmdTemps{ "[%.2x]@[%.2x]s", "[%.2x]@[%.2x]sn[%.2x]s", "[%.2x]@[%.2x]sn[%.2x]sn[%.2x]s", "[%.2x]@[%.2x]sn[%.2x]sn[%.2x]sn[%.2x]s" }; int idx = size - 1; uint8_t* bytes = (uint8_t*)&val; int cmdSize = cmdTemps[idx].size() - ((size + 1) * 2); std::string cmdStr(cmdSize, '\0'); switch (size) { case 1: snprintf(&cmdStr[0], cmdSize + 1, cmdTemps[idx].c_str(), reg, bytes[0]); break; case 2: snprintf(&cmdStr[0], cmdSize + 1, cmdTemps[idx].c_str(), reg, bytes[0], bytes[1]); break; case 3: snprintf(&cmdStr[0], cmdSize + 1, cmdTemps[idx].c_str(), reg, bytes[0], bytes[1], bytes[2]); break; case 4: snprintf(&cmdStr[0], cmdSize + 1, cmdTemps[idx].c_str(), reg, bytes[0], bytes[1], bytes[2], bytes[3]); break; } return cmdStr; }); // short stack timeIt(count, [](int reg, uint32_t val, int size){ static const std::array cmdTemps{ "[XX]@[XX]s", "[XX]@[XX]z[XX]s", "[XX]@[XX]z[XX]z[XX]s", "[XX]@[XX]z[XX]z[XX]z[XX]s" }; static const std::string hexDigits = "0123456789abcdef"; uint8_t* bytes = (uint8_t*)&val; std::string cmdStr(cmdTemps[size-1]); // reg cmdStr[1] = hexDigits[reg >> 4]; cmdStr[2] = hexDigits[reg & 0x0f]; switch (size) { case 1: cmdStr[6] = hexDigits[bytes[0] >> 4]; cmdStr[7] = hexDigits[bytes[0] & 0xf]; break; case 2: cmdStr[6] = hexDigits[bytes[0] >> 4]; cmdStr[7] = hexDigits[bytes[0] & 0xf]; cmdStr[11] = hexDigits[bytes[1] >> 4]; cmdStr[12] = hexDigits[bytes[1] & 0xf]; break; case 3: cmdStr[6] = hexDigits[bytes[0] >> 4]; cmdStr[7] = hexDigits[bytes[0] & 0xf]; cmdStr[11] = hexDigits[bytes[1] >> 4]; cmdStr[12] = hexDigits[bytes[1] & 0xf]; cmdStr[16] = hexDigits[bytes[2] >> 4]; cmdStr[17] = hexDigits[bytes[2] & 0xf]; break; case 4: cmdStr[6] = hexDigits[bytes[0] >> 4]; cmdStr[7] = hexDigits[bytes[0] & 0xf]; cmdStr[11] = hexDigits[bytes[1] >> 4]; cmdStr[12] = hexDigits[bytes[1] & 0xf]; cmdStr[16] = hexDigits[bytes[2] >> 4]; cmdStr[17] = hexDigits[bytes[2] & 0xf]; cmdStr[21] = hexDigits[bytes[3] >> 4]; cmdStr[22] = hexDigits[bytes[3] & 0xf]; break; } return cmdStr; }); // lapidary timeIt(count, [](int reg, uint32_t val, int size){ static const std::array cmdTemps{ "[XX]@[XX]s", "[XX]@[XX]z[XX]s", "[XX]@[XX]z[XX]z[XX]s", "[XX]@[XX]z[XX]z[XX]z[XX]s" }; static const std::string hexDigits = "0123456789abcdef"; uint8_t* bytes = (uint8_t*)&val; std::string cmdStr(cmdTemps[size-1]); // reg cmdStr[1] = hexDigits[reg >> 4]; cmdStr[2] = hexDigits[reg & 0x0f]; for (int pos = 6, iii = 0; iii < size; iii++, pos += 5) { cmdStr[pos] = hexDigits[bytes[iii] >> 4]; cmdStr[pos+1] = hexDigits[bytes[iii] & 0xf]; } return cmdStr; }); // leopard timeIt(count, [](int reg, uint32_t val, int size){ static const std::array cmdTemps{ "[XX]@[XX]s", "[XX]@[XX]z[XX]s", "[XX]@[XX]z[XX]z[XX]s", "[XX]@[XX]z[XX]z[XX]z[XX]s" }; static const std::string hexDigits = "0123456789abcdef"; uint8_t* bytes = (uint8_t*)&val; std::string cmdStr(cmdTemps[size-1]); // reg cmdStr[1] = hexDigits[reg >> 4]; cmdStr[2] = hexDigits[reg & 0x0f]; for (int pos = 6, iii = 0; iii < size; iii++, pos += 5) { cmdStr[pos] = hexDigits[bytes[iii] >> 4]; cmdStr[pos+1] = hexDigits[bytes[iii] & 0xf]; } return cmdStr; }); return 0; }

Language	Title	Created	Username
LanguageCpp	Titlefmt cmd	Created8 years ago	Usernameteap
LanguageCpp	Titlecircular erase	Created8 years ago	Usernameteap

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