add libc building to agbcc.

1 files changed, 61 insertions, 0 deletions

diff --git a/libc/string/strrchr.c b/libc/string/strrchr.c
new file mode 100644
index 0000000..65160f5
--- /dev/null
+++ b/libc/string/strrchr.c
@@ -0,0 +1,61 @@
+/*
+FUNCTION
+	<<strrchr>>---reverse search for character in string
+
+INDEX
+	strrchr
+
+ANSI_SYNOPSIS
+	#include <string.h>
+	char * strrchr(const char *<[string]>, int <[c]>);
+
+TRAD_SYNOPSIS
+	#include <string.h>
+	char * strrchr(<[string]>, <[c]>);
+	char *<[string]>;
+	int *<[c]>;
+
+DESCRIPTION
+	This function finds the last occurence of <[c]> (converted to
+	a char) in the string pointed to by <[string]> (including the
+	terminating null character).
+
+RETURNS
+	Returns a pointer to the located character, or a null pointer
+	if <[c]> does not occur in <[string]>.
+
+PORTABILITY
+<<strrchr>> is ANSI C.
+
+<<strrchr>> requires no supporting OS subroutines.
+
+QUICKREF
+	strrchr ansi pure
+*/
+
+#include <string.h>
+
+char *
+_DEFUN (strrchr, (s, i),
+	_CONST char *s _AND
+	int i)
+{
+  _CONST char *last = NULL;
+  char c = i;
+
+  while (*s)
+    {
+      if (*s == c)
+	{
+	  last = s;
+	}
+      s++;
+    }
+
+  if (*s == c)
+    {
+      last = s;
+    }
+
+  return (char *) last;
+}