ref: e969575d2e55eec89d3a2765b974e023123d8fa5
dir: /sys/src/libc/test/strchr.c/
#include <u.h> #include <libc.h> void chars(void) { char *z = ""; char *v = "foo bar ss"; char *e; e = strchr(z, 0); assert(e == z); e = strchr(z, 'z'); assert(e == nil); e = strchr(v, L'z'); assert(e == nil); e = strchr(v, L'a'); assert(e == v+5); e = strchr(v, 0); assert(e == v+10); } void runes(void) { Rune *z = L""; Rune *c = L"foo βαρ ß"; Rune *e; e = runestrchr(z, 0); assert(e == z); e = runestrchr(z, L'z'); assert(e == nil); e = runestrchr(c, L'z'); assert(e == nil); e = runestrchr(c, L'α'); assert(e == c+5); e = runestrchr(c, 0); assert(e == c+9); } void main(void) { chars(); runes(); exits(nil); }