Source of string.c - linux-imx - PHYTEC BitBucket (Stash)

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    int res = 0;
​
    for (su1 = cs, su2 = ct; 0 < count; ++su1, ++su2, count--)
        if ((res = *su1 - *su2) != 0)
            break;
    return res;
}
EXPORT_SYMBOL(memcmp);
#endif
​
#ifndef __HAVE_ARCH_BCMP
/**
 * bcmp - returns 0 if and only if the buffers have identical contents.
 * @a: pointer to first buffer.
 * @b: pointer to second buffer.
 * @len: size of buffers.
 *
 * The sign or magnitude of a non-zero return value has no particular
 * meaning, and architectures may implement their own more efficient bcmp(). So
 * while this particular implementation is a simple (tail) call to memcmp, do
 * not rely on anything but whether the return value is zero or non-zero.
 */
#undef bcmp
int bcmp(const void *a, const void *b, size_t len)
{
    return memcmp(a, b, len);
}
EXPORT_SYMBOL(bcmp);
#endif
​
#ifndef __HAVE_ARCH_MEMSCAN
/**
 * memscan - Find a character in an area of memory.
 * @addr: The memory area
 * @c: The byte to search for
 * @size: The size of the area.
 *
 * returns the address of the first occurrence of @c, or 1 byte past
 * the area if @c is not found
 */