HelenOS sources

ffs               108 kernel/genarch/src/drivers/bcm2835/irc.c 		inum = MAKE_IRQ(BANK_ARM, ffs(pending & IRQ_PEND_ARM_M) - 1);
ffs               111 kernel/genarch/src/drivers/bcm2835/irc.c 		inum = shortcut_inums[ffs(pos) - 1];
ffs               113 kernel/genarch/src/drivers/bcm2835/irc.c 		inum = MAKE_IRQ(BANK_GPU0, ffs(regs->irq_pending1) - 1);
ffs               115 kernel/genarch/src/drivers/bcm2835/irc.c 		inum = MAKE_IRQ(BANK_GPU1, ffs(regs->irq_pending2) - 1);
ffs                73 uspace/lib/posix/include/posix/string.h extern int ffs(int i);
ffs                44 uspace/lib/posix/include/posix/strings.h extern int ffs(int i);