1 //===-- Definition of cfloat128 type --------------------------------------===// 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 #ifndef LLVM_LIBC_TYPES_CFLOAT128_H 10 #define LLVM_LIBC_TYPES_CFLOAT128_H 11 12 #include "../llvm-libc-macros/float-macros.h" // LDBL_MANT_DIG 13 14 // Currently, the complex variant of C23 `_Float128` type is only defined as a 15 // built-in type in GCC 7 or later, for C and in GCC 13 or later, for C++. For 16 // clang, the complex variant of `__float128` is defined instead, and only on 17 // x86-64 targets for clang 11 or later. 18 // 19 // TODO: Update the complex variant of C23 `_Float128` type detection again when 20 // clang supports it. 21 #ifdef __clang__ 22 #if (__clang_major__ >= 11) && \ 23 (defined(__FLOAT128__) || defined(__SIZEOF_FLOAT128__)) 24 // Use _Complex __float128 type. clang uses __SIZEOF_FLOAT128__ or __FLOAT128__ 25 // macro to notify the availability of __float128 type: 26 // https://reviews.llvm.org/D15120 27 #define LIBC_TYPES_HAS_CFLOAT128 28 typedef _Complex __float128 cfloat128; 29 #endif 30 #elif defined(__GNUC__) 31 #if (defined(__STDC_IEC_60559_COMPLEX__) || defined(__SIZEOF_FLOAT128__)) && \ 32 (__GNUC__ >= 13 || (!defined(__cplusplus))) 33 #define LIBC_TYPES_HAS_CFLOAT128 34 typedef _Complex _Float128 cfloat128; 35 #endif 36 #endif 37 38 #if !defined(LIBC_TYPES_HAS_CFLOAT128) && (LDBL_MANT_DIG == 113) 39 #define LIBC_TYPES_HAS_CFLOAT128 40 #define LIBC_TYPES_CFLOAT128_IS_COMPLEX_LONG_DOUBLE 41 typedef _Complex long double cfloat128; 42 #endif 43 44 #endif // LLVM_LIBC_TYPES_CFLOAT128_H 45