[libc-commits] [libc] [libc]: Implement strfrom* functions and utils (PR #85438)

[Michael Jones via libc-commits]

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@@ -0,0 +1,44 @@
+//===-- Implementation of strfromf ------------------------------*- C++ -*-===//
+//
+// 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/stdlib/strfromf.h"
+#include "src/stdlib/str_from_util.h"
+
+#include <stdarg.h>
+#include <stddef.h>
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(int, strfromf,
+                   (char *__restrict s, size_t n, const char *__restrict format,
+                    float fp)) {
+
+  if (!s)
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michaelrj-google wrote:

I would change this to `LIBC_ASSERT(s != nullptr)`

https://github.com/llvm/llvm-project/pull/85438