X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstring%2Fstrcspn.c;h=70b978824e7d6973df4a393c678aad6cb47daad5;hb=7832fa07b60f2176efd9e9e4746246717d3e8949;hp=80c620cb03c8749e514c7d81caefd9372ce5a01b;hpb=34893ecc2200dc7017c36a54cb6c5f4c2378b5ec;p=pdclib

diff --git a/functions/string/strcspn.c b/functions/string/strcspn.c
index 80c620c..70b9788 100644
--- a/functions/string/strcspn.c
+++ b/functions/string/strcspn.c
@@ -5,4 +5,23 @@
 // This code is Public Domain. Use, modify, and redistribute at will.
 // ----------------------------------------------------------------------------
 
-size_t strcspn( const char * s1, const char * s2 ) { /* TODO */ };
+#include <__size_t.h>
+
+size_t strcspn( const char * src_1, const char * src_2 )
+{
+    size_t len = 0;
+    const char * src_p;
+    while ( src_1[len] != '\0' )
+    {
+        src_p = src_2;
+        while ( *src_p != '\0' )
+        {
+            if ( src_1[len] == *src_p++ )
+            {
+                return len;
+            }
+        }
+        ++len;
+    }
+    return len;
+}