Texas Instruments TMS320C64X manual A multiple of 4 words must be processed

DSP_blk_eswap32

t2 = _x[i*4 + 1];

t3 = _x[i*4 + 0]; _r[i*4 + 0] = t0; _r[i*4 + 1] = t1; _r[i*4 + 2] = t2; _r[i*4 + 3] = t3;

	}
	}
Special Requirements
	- Input and output arrays do not overlap, except where “r == NULL” so that
	the operation occurs in-place.
	- The input array and output array are expected to be double-word aligned,
	and a multiple of 4 words must be processed.
Implementation Notes
	- Bank Conflicts: No bank conflicts occur.
	- Interruptibility: The code is interrupt-tolerant but not interruptible.
Benchmarks	Cycles	nx/4 + 20
	Codesize	116 bytes

C64x+ DSPLIB Reference 4-81