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-rw-r--r--REORG.TODO/misc/lsearch.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/REORG.TODO/misc/lsearch.c b/REORG.TODO/misc/lsearch.c
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+++ b/REORG.TODO/misc/lsearch.c
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+/* Linear search functions.
+   Copyright (C) 1996-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <search.h>
+#include <string.h>
+
+
+void *
+lsearch (const void *key, void *base, size_t *nmemb, size_t size,
+	 __compar_fn_t compar)
+{
+  void *result;
+
+  /* Try to find it.  */
+  result = lfind (key, base, nmemb, size, compar);
+  if (result == NULL)
+    {
+      /* Not available.  Insert at the end.  */
+      result = memcpy (base + (*nmemb) * size, key, size);
+      ++(*nmemb);
+    }
+
+  return result;
+}
+
+
+void *
+lfind (const void *key, const void *base, size_t *nmemb, size_t size,
+       __compar_fn_t compar)
+{
+  const void *result = base;
+  size_t cnt = 0;
+
+  while (cnt < *nmemb && (*compar) (key, result) != 0)
+    {
+      result += size;
+      ++cnt;
+    }
+
+  return cnt < *nmemb ? (void *) result : NULL;
+}
+libc_hidden_def (lfind)