SaraP
67 lines
2.0 KiB
C++
67 lines
2.0 KiB
C++
/*++
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Copyright (C) 2019 3MF Consortium
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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Abstract:
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NMR_Architecture_Utils.h defines helper functions for working on big-endian architecture
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--*/
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#ifndef __NMR_ARCHITECTURE_UTILS
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#define __NMR_ARCHITECTURE_UTILS
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#include "NMR_Types.h"
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namespace NMR {
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template<int N>
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void swapBytesArray(unsigned char(&bytes)[N]) {
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// Optimize this with a platform-specific API as desired.
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for (unsigned char *p = bytes, *end = bytes + N - 1; p < end; ++p, --end) {
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unsigned char tmp = *p;
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*p = *end;
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*end = tmp;
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}
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}
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template<typename T>
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T swapBytes(T value) {
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swapBytesArray(*reinterpret_cast<unsigned char(*)[sizeof(value)]>(&value));
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return value;
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}
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inline bool isBigEndian(void)
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{
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union {
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nfUint32 i;
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char c[4];
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} bint = { 0x01020304 };
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return bint.c[0] == 1;
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}
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}
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#endif // __NMR_ARCHITECTURE_UTILS
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