259 is_combo(int transforms)  in is_combo()  argument
261    return transforms & (transforms-1); /* non-zero if more than one set bit */  in is_combo()
265 first_transform(int transforms)  in first_transform()  argument
267    return transforms & -transforms; /* lowest set bit */  in first_transform()
271 is_bad_combo(int transforms)  in is_bad_combo()  argument
279       if ((combo & transforms) == combo &&  in is_bad_combo()
280          (transforms & known_bad_combos[i][1]) == 0)  in is_bad_combo()
502    int            transforms;        /* Transform used in operation */  member
657       if (dp->transforms != 0)  in display_log()
659          int tr = dp->transforms;  in display_log()
782    int transforms)  in read_png()  argument
795       dp->transforms = transforms;  in read_png()
819    png_read_png(pp, ip, transforms, NULL/*params*/);  in read_png()
828 …fprintf(stderr, "%.4x %2d (%3lu bytes):", transforms, png_get_bit_depth(pp,ip), (unsigned long)rb);  in read_png()
1235 write_png(struct display *dp, png_infop ip, int transforms)  in write_png()  argument
1241    dp->transforms = transforms;  in write_png()
1260    if (transforms & (PNG_TRANSFORM_PACKING|  in write_png()
1266       if (transforms & (PNG_TRANSFORM_STRIP_FILLER|  in write_png()
1274    png_write_png(dp->write_pp, ip, transforms, NULL/*params*/);  in write_png()
1326    dp->transforms = 0;  in test_one_file()