unhex.h

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#ifndef INCLUDE_UNHEX_H_
#define INCLUDE_UNHEX_H_
 
/**
 * Convert hex string to byte array.
 *
 * @param first Pointer to first element of range to convert
 * @param last Pointer to one-after-last element of range to convert
 * @param output Beginning of destination range.
 * @return false if conversion succeed.
 */
bool unhex(const char *first, const char *last, char *output);
 
#endif  // INCLUDE_UNHEX_H_