127   JCOEFPTR inptr;  variable
138   inptr = coef_block;  variable
141   for (ctr = DCTSIZE; ctr > 0; inptr++, quantptr++, wsptr++, ctr--) {
145     if (inptr[DCTSIZE*1] == 0 && inptr[DCTSIZE*2] == 0 &&
146         inptr[DCTSIZE*3] == 0 && inptr[DCTSIZE*5] == 0 &&
147         inptr[DCTSIZE*6] == 0 && inptr[DCTSIZE*7] == 0) {
149       int dcval = LEFT_SHIFT(DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]),
162     tmp0 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]);
165     z2 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]);
166     z3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]);
175     z1 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]);
176     z2 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]);
177     z3 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]);
178     z4 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]);
280   JCOEFPTR inptr;  in jpeg_idct_2x2()  local
291   inptr = coef_block;  in jpeg_idct_2x2()  local
294   for (ctr = DCTSIZE; ctr > 0; inptr++, quantptr++, wsptr++, ctr--) {  in jpeg_idct_2x2()
298     if (inptr[DCTSIZE*1] == 0 && inptr[DCTSIZE*3] == 0 &&  in jpeg_idct_2x2()
299         inptr[DCTSIZE*5] == 0 && inptr[DCTSIZE*7] == 0) {  in jpeg_idct_2x2()
301       int dcval = LEFT_SHIFT(DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]),  in jpeg_idct_2x2()
312     z1 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]);  in jpeg_idct_2x2()
317     z1 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]);  in jpeg_idct_2x2()
319     z1 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]);  in jpeg_idct_2x2()
321     z1 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]);  in jpeg_idct_2x2()
323     z1 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]);  in jpeg_idct_2x2()