| //===-- Shared Converter Utilities for printf -------------------*- 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIBC_SRC_STDIO_PRINTF_CORE_CONVERTER_UTILS_H |
| #define LLVM_LIBC_SRC_STDIO_PRINTF_CORE_CONVERTER_UTILS_H |
| |
| #include "src/__support/CPP/limits.h" |
| #include "src/stdio/printf_core/core_structs.h" |
| |
| #include <inttypes.h> |
| #include <stddef.h> |
| |
| namespace __llvm_libc { |
| namespace printf_core { |
| |
| inline uintmax_t apply_length_modifier(uintmax_t num, LengthModifier lm) { |
| switch (lm) { |
| case LengthModifier::none: |
| return num & cpp::numeric_limits<unsigned int>::max(); |
| case LengthModifier::l: |
| return num & cpp::numeric_limits<unsigned long>::max(); |
| case LengthModifier::ll: |
| case LengthModifier::L: |
| return num & cpp::numeric_limits<unsigned long long>::max(); |
| case LengthModifier::h: |
| return num & cpp::numeric_limits<unsigned short>::max(); |
| case LengthModifier::hh: |
| return num & cpp::numeric_limits<unsigned char>::max(); |
| case LengthModifier::z: |
| return num & cpp::numeric_limits<size_t>::max(); |
| case LengthModifier::t: |
| // We don't have unsigned ptrdiff so uintptr_t is used, since we need an |
| // unsigned type and ptrdiff is usually the same size as a pointer. |
| static_assert(sizeof(ptrdiff_t) == sizeof(uintptr_t)); |
| return num & cpp::numeric_limits<uintptr_t>::max(); |
| case LengthModifier::j: |
| return num; // j is intmax, so no mask is necessary. |
| } |
| } |
| |
| #define RET_IF_RESULT_NEGATIVE(func) \ |
| { \ |
| int result = (func); \ |
| if (result < 0) \ |
| return result; \ |
| } |
| |
| } // namespace printf_core |
| } // namespace __llvm_libc |
| |
| #endif // LLVM_LIBC_SRC_STDIO_PRINTF_CORE_CONVERTER_UTILS_H |