ref: 3cf63ee15fce37647fb3e5ce3d757b7cdaf5e872
dir: /sys/src/libString/s_tolower.c/
#include <u.h> #include <libc.h> #include "String.h" /* convert String to lower case */ void s_tolower(String *sp) { char *cp; for(cp=sp->ptr; *cp; cp++) *cp = tolower(*cp); }