INNER CODE UNIT · C

product_hi

AmigaPorts/ACE · src/fixmath/fix16.c:130

	int32_t product_hi = AC + (AD_CB >> 16);
	
	// Handle carry from lower 32 bits to upper part of result.
	uint32_t ad_cb_temp = AD_CB << 16;
	uint32_t product_lo = BD + ad_cb_temp;
	if (product_lo < BD)
		product_hi++;
	
#ifndef FIXMATH_NO_OVERFLOW
	// The upper 17 bits should all be the same (the sign).
	if (product_hi >> 31 != product_hi >> 15)
		return fix16_overflow;
#endif
	
#ifdef FIXMATH_NO_ROUNDING
	return (product_hi << 16) | (product_lo >> 16);
#else
	// Subtracting 0x8000 (= 0.5) and then using signed right shift

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