ref: 7fa5db9d6a8d3b7d1430cab7df9fda9b8ee1ec0b dir: /sys/src/libc/port/abs.c/
#include <u.h> #include <libc.h> int abs(int a) { if(a < 0) return -a; return a; } long labs(long a) { if(a < 0) return -a; return a; }