[libc] move bcmp, bzero, bcopy, index, rindex, strcasecmp, strncasecmp to strings.h (#118899)

docgen relies on the convention that we have a file foo.cpp in
libc/src/\<header\>/. Because the above functions weren't in libc/src/strings/
but rather libc/src/string/, docgen could not find that we had implemented
these.

Rather than add special carve outs to docgen, let's fix up our sources for
these 7 functions to stick with the existing conventions the rest of the
codebase follows.

Link: #118860
Fixes: #118875

1 files changed, 21 insertions, 0 deletions

diff --git a/libc/src/strings/bcmp.cpp b/libc/src/strings/bcmp.cpp
new file mode 100644
index 000000000000..083f13d3f95d
--- /dev/null
+++ b/libc/src/strings/bcmp.cpp
@@ -0,0 +1,21 @@
+//===-- Implementation of bcmp --------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/strings/bcmp.h"
+#include "src/__support/common.h"
+#include "src/__support/macros/config.h"
+#include "src/string/memory_utils/inline_bcmp.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(int, bcmp,
+                   (const void *lhs, const void *rhs, size_t count)) {
+  return inline_bcmp(lhs, rhs, count);
+}
+
+} // namespace LIBC_NAMESPACE_DECL