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#include "num_read_write.h" |
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namespace tpt { |
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typedef unsigned char uchar; |
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void |
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numwrite(std::ostream& out, uint16_t const& x) |
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{ |
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char buf[2]; |
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buf[0] = x%256; |
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buf[1] = (x>>8)%256; |
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out.write(buf,2); |
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} |
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void |
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numwrite(std::ostream& out, uint32_t const& x) |
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{ |
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char buf[4]; |
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buf[0] = x%256; |
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buf[1] = (x>>8)%256; |
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buf[2] = (x>>16)%256; |
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buf[3] = (x>>24)%256; |
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out.write(buf,4); |
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} |
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void |
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numwrite(std::ostream& out, uint64_t const& x) |
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{ |
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char buf[8]; |
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buf[0] = x%256; |
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buf[1] = (x>>8)%256; |
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buf[2] = (x>>16)%256; |
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buf[3] = (x>>24)%256; |
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buf[4] = (x>>32)%256; |
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buf[5] = (x>>40)%256; |
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buf[6] = (x>>48)%256; |
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buf[7] = (x>>56)%256; |
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out.write(buf,8); |
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} |
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char const* |
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numread(char const* src, uint16_t & x) |
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{ |
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uchar const* d = reinterpret_cast<uchar const*>(src); |
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x = (uint16_t(d[0])<<0) | (uint16_t(d[1])<<8); |
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return src+2; |
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} |
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char const* |
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numread(char const* src, uint32_t & x) |
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{ |
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uchar const* d = reinterpret_cast<uchar const*>(src); |
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x = ((uint32_t(d[0])<<0) | |
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(uint32_t(d[1])<<8) | |
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(uint32_t(d[2])<<16)| |
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(uint32_t(d[3])<<24)); |
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return src+4; |
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} |
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char const* |
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numread(char const* src, uint64_t & x) |
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{ |
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uchar const* d = reinterpret_cast<uchar const*>(src); |
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x = ((uint64_t(d[0])<<0) | |
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(uint64_t(d[1])<<8) | |
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(uint64_t(d[2])<<16) | |
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(uint64_t(d[3])<<24) | |
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(uint64_t(d[4])<<32) | |
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(uint64_t(d[5])<<40) | |
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(uint64_t(d[6])<<48) | |
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(uint64_t(d[7])<<56)); |
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return src+8; |
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} |
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} |
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