Import sources from 2011-03-30 iso image

1 files changed, 18 insertions, 0 deletions

diff --git a/sys/src/libc/port/strspn.c b/sys/src/libc/port/strspn.c
new file mode 100755
index 000000000..8744fd0ec
--- /dev/null
+++ b/sys/src/libc/port/strspn.c
@@ -0,0 +1,18 @@
+#include <u.h>
+#include <libc.h>
+
+#define	N	256
+
+long
+strspn(char *s, char *b)
+{
+	char map[N], *os;
+
+	memset(map, 0, N);
+	while(*b)
+		map[*(uchar *)b++] = 1;
+	os = s;
+	while(map[*(uchar *)s++])
+		;
+	return s - os - 1;
+}