| //===-- Detection of _Complex _Float128 compiler builtin type -------------===// |
| // |
| // 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_MACROS_CFLOAT128_MACROS_H |
| #define LLVM_LIBC_MACROS_CFLOAT128_MACROS_H |
| |
| #include "float-macros.h" // LDBL_MANT_DIG |
| |
| // Currently, the complex variant of C23 `_Float128` type is only defined as a |
| // built-in type in GCC 7 or later, for C and in GCC 13 or later, for C++. For |
| // clang, the complex variant of `__float128` is defined instead, and only on |
| // x86-64 targets for clang 11 or later. |
| // |
| // TODO: Update the complex variant of C23 `_Float128` type detection again when |
| // clang supports it. |
| #ifdef __clang__ |
| #if (__clang_major__ >= 11) && \ |
| (defined(__FLOAT128__) || defined(__SIZEOF_FLOAT128__)) |
| // Use _Complex __float128 type. clang uses __SIZEOF_FLOAT128__ or __FLOAT128__ |
| // macro to notify the availability of __float128 type: |
| // https://reviews.llvm.org/D15120 |
| #define LIBC_TYPES_HAS_CFLOAT128 |
| #endif |
| #elif defined(__GNUC__) |
| #if (defined(__STDC_IEC_60559_COMPLEX__) || defined(__SIZEOF_FLOAT128__)) && \ |
| (__GNUC__ >= 13 || (!defined(__cplusplus))) |
| #define LIBC_TYPES_HAS_CFLOAT128 |
| #endif |
| #endif |
| |
| #if !defined(LIBC_TYPES_HAS_CFLOAT128) && (LDBL_MANT_DIG == 113) |
| #define LIBC_TYPES_HAS_CFLOAT128 |
| #define LIBC_TYPES_CFLOAT128_IS_COMPLEX_LONG_DOUBLE |
| #endif |
| |
| #endif // LLVM_LIBC_MACROS_CFLOAT128_MACROS_H |
