HelenOS sources

FAT_CLUSTER_DOUBLE_SIZE   50 uspace/app/mkfat/fat.h #define FAT_CLUSTER_DOUBLE_SIZE(a) ((a) / 4)
FAT_CLUSTER_DOUBLE_SIZE   50 uspace/lib/label/include/std/fat.h #define FAT_CLUSTER_DOUBLE_SIZE(a) ((a) / 4)
HelenOS homepage, sources at GitHub