1 //===-- GPU implementation of getchar -------------------------------------===// 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/getchar.h" 10 #include "file.h" 11 #include "src/__support/macros/config.h" 12 13 #include "hdr/stdio_macros.h" // for EOF and stdin. 14 15 namespace LIBC_NAMESPACE_DECL { 16 17 LLVM_LIBC_FUNCTION(int, getchar, ()) { 18 unsigned char c; 19 size_t r = file::read(stdin, &c, 1); 20 21 if (r != 1) 22 return EOF; 23 return c; 24 } 25 26 } // namespace LIBC_NAMESPACE_DECL 27