ref: 17ebe55031ae6945ad1f671b69267a672328e4b1
dir: /sys/src/cmd/venti/srv/unittoull.c/
#include "stdinc.h" #define TWID64 ((u64int)~(u64int)0) u64int unittoull(char *s) { char *es; u64int n; if(s == nil) return TWID64; n = strtoul(s, &es, 0); if(*es == 'k' || *es == 'K'){ n *= 1024; es++; }else if(*es == 'm' || *es == 'M'){ n *= 1024*1024; es++; }else if(*es == 'g' || *es == 'G'){ n *= 1024*1024*1024; es++; }else if(*es == 't' || *es == 'T'){ n *= 1024*1024; n *= 1024*1024; } if(*es != '\0') return TWID64; return n; }