add8to16()

LIB8STATIC_ALWAYS_INLINE uint16_t add8to16	(	uint8_t	i,
		uint16_t	j )

Add one byte to two bytes, with 16-bit result.

Note

This does not saturate and may overflow!

Parameters

i	first value to add, 8-bit
j	second value to add, 16-bit

Returns

the sum of i + j, 16-bit

Definition at line 162 of file math8.h.

                                                                  {
#if ADD8_C == 1
    uint16_t t = i + j;
    return t;
#elif ADD8_AVRASM == 1
    // Add i(one byte) to j(two bytes)
    asm volatile("add %A[j], %[i]              \n\t"
                 "adc %B[j], __zero_reg__      \n\t"
                 : [j] "+r"(j)
                 : [i] "r"(i));
    return i;
#else
#error "No implementation for add8to16 available."
#endif
}

References LIB8STATIC_ALWAYS_INLINE, and t.