0 +lz*Clq@CqTţ hx_I|+?/* Copyright (C) 1997-2021 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see . */ /* * ISO C99 Standard: 7.22 Type-generic math */ #ifndef _TGMATH_H #define _TGMATH_H 1 #define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION #include /* Include the needed headers. */ #include #include #include /* There are two variant implementations of type-generic macros in this file: one for GCC 8 and later, using __builtin_tgmath and where each macro expands each of its arguments only once, and one for older GCC, using other compiler extensions but with macros expanding their arguments many times (so resulting in exponential blowup of the size of expansions when calls to such macros are nested inside arguments to such macros). Because of a long series of defect fixes made after the initial release of TS 18661-1, GCC versions before GCC 13 have __builtin_tgmath semantics that, when integer arguments are passed to narrowing macros returning _Float32x, or non-narrowing macros with at least two generic arguments, do not always correspond to the C2X semantics, so more complicated macro definitions are also used in some cases for versions from GCC 8 to GCC 12. */ #define __HAVE_BUILTIN_TGMATH __GNUC_PREREQ (8, 0) #define __HAVE_BUILTIN_TGMATH_C2X __GNUC_PREREQ (13, 0) #if __GNUC_PREREQ (2, 7) /* Certain cases of narrowing macros only need to call a single function so cannot use __builtin_tgmath and do not need any complicated logic. */ # if __HAVE_FLOAT128X # error "Unsupported _Float128x type for ." # endif # if ((__HAVE_FLOAT64X && !__HAVE_FLOAT128) \ || (__HAVE_FLOAT128 && !__HAVE_FLOAT64X)) # error "Unsupported combination of types for ." # endif # define __TGMATH_2_NARROW_D(F, X, Y) \ (F ## l (X, Y)) # define __TGMATH_2_NARROW_F64X(F, X, Y) \ (F ## f128 (X, Y)) # if !__HAVE_FLOAT128 # define __TGMATH_2_NARROW_F32X(F, X, Y) \ (F ## f64 (X, Y)) # endif # if __HAVE_BUILTIN_TGMATH # if __HAVE_FLOAT16 && __GLIBC_USE (IEC_60559_TYPES_EXT) # define __TG_F16_ARG(X) X ## f16, # else # define __TG_F16_ARG(X) # endif # if __HAVE_FLOAT32 && __GLIBC_USE (IEC_60559_TYPES_EXT) # define __TG_F32_ARG(X) X ## f32, # else # define __TG_F32_ARG(X) # endif # if __HAVE_FLOAT64 && __GLIBC_USE (IEC_60559_TYPES_EXT) # define __TG_F64_ARG(X) X ## f64, # else # define __TG_F64_ARG(X) # endif # if __HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT) # define __TG_F128_ARG(X) X ## f128, # else # define __TG_F128_ARG(X) # endif # if __HAVE_FLOAT32X && __GLIBC_USE (IEC_60559_TYPES_EXT) # define __TG_F32X_ARG(X) X ## f32x, # else # define __TG_F32X_ARG(X) # endif # if __HAVE_FLOAT64X && __GLIBC_USE (IEC_60559_TYPES_EXT) # define __TG_F64X_ARG(X) X ## f64x, # else # define __TG_F64X_ARG(X) # endif # if __HAVE_FLOAT128X && __GLIBC_USE (IEC_60559_TYPES_EXT) # define __TG_F128X_ARG(X) X ## f128x, # else # define __TG_F128X_ARG(X) # endif # define __TGMATH_FUNCS(X) X ## f, X, X ## l, \ __TG_F16_ARG (X) __TG_F32_ARG (X) __TG_F64_ARG (X) __TG_F128_ARG (X) \ __TG_F32X_ARG (X) __TG_F64X_ARG (X) __TG_F128X_ARG (X) # define __TGMATH_RCFUNCS(F, C) __TGMATH_FUNCS (F) __TGMATH_FUNCS (C) # de