| //===-- Definition of float128 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_TYPES_FLOAT128_H |
| #define LLVM_LIBC_TYPES_FLOAT128_H |
| |
| #include "../llvm-libc-macros/float-macros.h" // LDBL_MANT_DIG |
| |
| // Currently, C23 `_Float128` type is only defined as a built-in type in GCC 7 |
| // or later, and only for C. For C++, or for clang, `__float128` is defined |
| // instead, and only on x86-64 targets. |
| // |
| // TODO: Update C23 `_Float128` type detection again when clang supports it. |
| // https://github.com/llvm/llvm-project/issues/80195 |
| #if defined(__STDC_IEC_60559_BFP__) && !defined(__clang__) && \ |
| !defined(__cplusplus) |
| #define LIBC_TYPES_HAS_FLOAT128 |
| typedef _Float128 float128; |
| #elif defined(__FLOAT128__) || defined(__SIZEOF_FLOAT128__) |
| // Use __float128 type. gcc and clang sometime use __SIZEOF_FLOAT128__ to |
| // notify the availability of __float128. |
| // clang also uses __FLOAT128__ macro to notify the availability of __float128 |
| // type: https://reviews.llvm.org/D15120 |
| #define LIBC_TYPES_HAS_FLOAT128 |
| typedef __float128 float128; |
| #elif (LDBL_MANT_DIG == 113) |
| #define LIBC_TYPES_HAS_FLOAT128 |
| typedef long double float128; |
| #endif |
| |
| #endif // LLVM_LIBC_TYPES_FLOAT128_H |
