mirror of
https://github.com/fluencelabs/wasmer
synced 2024-12-15 15:15:40 +00:00
56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
/*
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* Copyright 2016 The Emscripten Authors. All rights reserved.
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* Emscripten is available under two separate licenses, the MIT license and the
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* University of Illinois/NCSA Open Source License. Both these licenses can be
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* found in the LICENSE file.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <iostream>
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#include <string>
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#include <sstream>
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typedef unsigned long long quint64;
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using namespace std;
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inline quint64 qbswap(quint64 source) {
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return 0 | ((source & quint64(0x00000000000000ffLL)) << 56) |
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((source & quint64(0x000000000000ff00LL)) << 40) |
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((source & quint64(0x0000000000ff0000LL)) << 24) |
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((source & quint64(0x00000000ff000000LL)) << 8) |
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((source & quint64(0x000000ff00000000LL)) >> 8) |
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((source & quint64(0x0000ff0000000000LL)) >> 24) |
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((source & quint64(0x00ff000000000000LL)) >> 40) |
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((source & quint64(0xff00000000000000LL)) >> 56);
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}
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int main() {
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quint64 v = strtoull("4433ffeeddccbb00", NULL, 16);
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printf("%lld\n", v);
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const string string64bitInt = "4433ffeeddccbb00";
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stringstream s(string64bitInt);
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quint64 int64bitInt = 0;
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printf("1\n");
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s >> hex >> int64bitInt;
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printf("2\n");
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stringstream out;
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out << hex << qbswap(int64bitInt);
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cout << out.str() << endl;
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cout << hex << int64bitInt << endl;
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cout << string64bitInt << endl;
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if (out.str() != "bbccddeeff3344") {
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cout << "Failed!" << endl;
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} else {
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cout << "Succeeded!" << endl;
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}
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return 0;
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}
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