1 //===-- Implementation of printf --------------------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "src/stdio/printf.h"
10 
11 #include "src/__support/File/file.h"
12 #include "src/__support/arg_list.h"
13 #include "src/stdio/printf_core/vfprintf_internal.h"
14 
15 #include <stdarg.h>
16 
17 namespace __llvm_libc {
18 
19 LLVM_LIBC_FUNCTION(int, printf, (const char *__restrict format, ...)) {
20   va_list vlist;
21   va_start(vlist, format);
22   internal::ArgList args(vlist); // This holder class allows for easier copying
23                                  // and pointer semantics, as well as handling
24                                  // destruction automatically.
25   va_end(vlist);
26   int ret_val = printf_core::vfprintf_internal(
27       reinterpret_cast<::FILE *>(__llvm_libc::stdout), format, args);
28   return ret_val;
29 }
30 
31 } // namespace __llvm_libc
32