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#include "scan.h"
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int scan_fromhex(unsigned char c) {
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if (c>='0' && c<='9')
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return c-'0';
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else if (c>='A' && c<='F')
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return c-'A'+10;
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else if (c>='a' && c<='f')
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return c-'a'+10;
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return -1;
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}
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