1 files changed, 19 insertions, 0 deletions

diff --git a/str_chr.c b/str_chr.c
new file mode 100644
index 0000000..9b467eb
--- /dev/null
+++ b/str_chr.c
@@ -0,0 +1,19 @@
+/* Public domain. */
+
+#include "str.h"
+
+unsigned int str_chr(register const char *s,int c)
+{
+  register char ch;
+  register const char *t;
+
+  ch = c;
+  t = s;
+  for (;;) {
+    if (!*t) break; if (*t == ch) break; ++t;
+    if (!*t) break; if (*t == ch) break; ++t;
+    if (!*t) break; if (*t == ch) break; ++t;
+    if (!*t) break; if (*t == ch) break; ++t;
+  }
+  return t - s;
+}