sub8()

LIB8STATIC_ALWAYS_INLINE uint8_t sub8	(	uint8_t	i,
		uint8_t	j )

Subtract one byte from another, 8-bit result.

Note

This does not saturate and may overflow!

Parameters

i	byte to subtract from
j	byte to subtract

Returns

i - j

Definition at line 183 of file math8.h.

                                                            {
#if SUB8_C == 1
    int t = i - j;
    return static_cast<uint8_t>(t);
#elif SUB8_AVRASM == 1
    // Subtract j from i, period.
    asm volatile("sub %0, %1" : "+r"(i) : "r"(j));
    return i;
#else
#error "No implementation for sub8 available."
#endif
}

References LIB8STATIC_ALWAYS_INLINE, and t.