bcd.c

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#include <linux/bcd.h>
#include <linux/export.h>

unsigned _bcd2bin(unsigned char val)
{
    return (val & 0x0f) + (val >> 4) * 10;
}
EXPORT_SYMBOL(_bcd2bin);

unsigned char _bin2bcd(unsigned val)
{
    return ((val / 10) << 4) + val % 10;
}
EXPORT_SYMBOL(_bin2bcd);