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	#define ADD /* A += X */ \			#define ADD /* A += X */ \
	FPU_ADDS(a3, a3, x3); \			FPU_ADDS(a3, a3, x3); \
	FPU_ADDCS(a2, a2, x2); \			FPU_ADDCS(a2, a2, x2); \
	FPU_ADDCS(a1, a1, x1); \			FPU_ADDCS(a1, a1, x1); \
	FPU_ADDC(a0, a0, x0)			FPU_ADDC(a0, a0, x0)

	#define SHR1 /* A >>= 1, with sticky */ \			#define SHR1 /* A >>= 1, with sticky */ \
	sticky \|= a3 & 1, a3 = (a3 >> 1) \| (a2 << 31), \			sticky \|= a3 & 1, a3 = (a3 >> 1) \| (a2 << 31), \
	a2 = (a2 >> 1) \| (a1 << 31), a1 = (a1 >> 1) \| (a0 << 31), a0 >>= 1			a2 = (a2 >> 1) \| (a1U << 31), a1 = (a1 >> 1) \| (a0 << 31), a0 >>= 1

	#define SHR32 /* A >>= 32, with sticky */ \			#define SHR32 /* A >>= 32, with sticky */ \
	sticky \|= a3, a3 = a2, a2 = a1, a1 = a0, a0 = 0			sticky \|= a3, a3 = a2, a2 = a1, a1 = a0, a0 = 0

	#define STEP /* each 1-bit step of the multiplication */ \			#define STEP /* each 1-bit step of the multiplication */ \
	SHR1; if (bit & m) { ADD; }; bit <<= 1			SHR1; if (bit & m) { ADD; }; bit <<= 1

	/*			/*
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