ref: 7b2a6f7d4f09ae01a9ef6b152b04f5e5cba72358 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; }