ref: 27bdfccc4095a289e1a9bfcc1e98f5cca9c0a9c3 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; }