kc3-lang/gnulib/lib/fenv.in.h
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Date : 2025-01-01T09:24:36
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lib/fenv.in.h
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/* A GNU-like <fenv.h>. Copyright (C) 1997-2025 Free Software Foundation, Inc. This file 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. This file 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 this program. If not, see <https://www.gnu.org/licenses/>. */ /* Based on glibc/sysdeps/<cpu>/bits/fenv.h. */ #if __GNUC__ >= 3 @PRAGMA_SYSTEM_HEADER@ #endif @PRAGMA_COLUMNS@ #ifndef _@GUARD_PREFIX@_FENV_H /* The include_next requires a split double-inclusion guard. */ #if @HAVE_FENV_H@ # @INCLUDE_NEXT@ @NEXT_FENV_H@ #endif #ifndef _@GUARD_PREFIX@_FENV_H #define _@GUARD_PREFIX@_FENV_H /* This file uses GNULIB_POSIXCHECK. */ #if !_GL_CONFIG_H_INCLUDED #error "Please include config.h first." #endif /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */ /* The definition of _GL_WARN_ON_USE is copied here. */ /* We cannot implement the #pragmas here; this needs to be done in the compiler. */ /* ISO C 99 § 7.6.4 Environment ISO C 23 § 7.6.6 Environment */ #if !@HAVE_FENV_H@ # if (defined __x86_64__ || defined _M_X64) || (defined __i386 || defined _M_IX86) typedef struct { /* 7 32-bit words, see <https://stackoverflow.com/questions/10337750/> */ unsigned short __control_word; /* fctrl register */ unsigned short __reserved1; unsigned short __status_word; /* fstat register */ unsigned short __reserved2; unsigned short __tags; unsigned short __reserved3; unsigned int __instruction_pointer; /* eip register */ unsigned short __instruction_selector; /* cs register */ unsigned int __opcode : 11; unsigned int __reserved4 : 5; unsigned int __data_pointer; unsigned short __data_selector; unsigned short __reserved5; # ifdef __x86_64__ unsigned int __mxcsr; /* mxcsr register */ # endif } fenv_t; # elif defined __aarch64__ /* arm64 */ typedef struct { unsigned int __fpcr; /* fpcr register */ unsigned int __fpsr; /* fpsr register */ } fenv_t; # elif defined __arm__ typedef struct { unsigned int __cw; /* fpscr register */ } fenv_t; # elif defined __alpha typedef unsigned long fenv_t; # elif defined __hppa typedef struct { unsigned int __status_word; /* floating point status register */ } fenv_t; # elif defined __ia64__ typedef unsigned long fenv_t; /* fpsr = floating point status register */ # elif defined __m68k__ typedef struct { unsigned int __control_register; /* fpcr = floating point control register */ unsigned int __status_register; /* fpsr = floating point status register */ unsigned int __instruction_address; /* floating point instruction register */ } fenv_t; # elif defined __mips__ || defined __loongarch__ typedef struct { unsigned int __fp_control_register; /* floating point control and status register */ } fenv_t; # elif defined __powerpc__ typedef double /* yuck! */ fenv_t; /* fpscr register */ # elif defined __riscv typedef unsigned int fenv_t; /* fcsr register */ # elif defined __s390__ || defined __s390x__ typedef struct { unsigned int __fpc; /* fpc = floating point control register */ } fenv_t; # elif defined __sh__ typedef struct { unsigned int __fpscr; /* fpscr register */ } fenv_t; # elif defined __sparc typedef unsigned long fenv_t; /* fsr = floating point state register */ #else /* A dummy fallback. */ typedef unsigned long fenv_t; # endif # define FE_DFL_ENV ((const fenv_t *) (-1)) #else # if !HAVE_FE_DFL_ENV # undef FE_DFL_ENV # define FE_DFL_ENV ((const fenv_t *) (-1)) # endif #endif #if @GNULIB_FEGETENV@ /* Stores the thread's current floating-point environment in *ENVP and returns zero. Upon failure, it returns non-zero. */ # if @REPLACE_FEGETENV@ || (!@HAVE_FEGETENV@ && defined __FreeBSD__) /* has an inline definition */ # if !(defined __cplusplus && defined GNULIB_NAMESPACE) # undef fegetenv # define fegetenv rpl_fegetenv # endif _GL_FUNCDECL_RPL (fegetenv, int, (fenv_t *envp), ); _GL_CXXALIAS_RPL (fegetenv, int, (fenv_t *envp)); # else # if !@HAVE_FEGETENV@ _GL_FUNCDECL_SYS (fegetenv, int, (fenv_t *envp), ); # endif _GL_CXXALIAS_SYS (fegetenv, int, (fenv_t *envp)); # endif _GL_CXXALIASWARN (fegetenv); #endif #if @GNULIB_FESETENV@ /* Activates the given object *ENVP as the thread's current floating-point environment, without raising floating-point exceptions, and returns zero. ENVP may be FE_DFL_ENV. Upon failure, it returns non-zero. */ # if @REPLACE_FESETENV@ || (!@HAVE_FESETENV@ && defined __FreeBSD__) /* has an inline definition */ # if !(defined __cplusplus && defined GNULIB_NAMESPACE) # undef fesetenv # define fesetenv rpl_fesetenv # endif _GL_FUNCDECL_RPL (fesetenv, int, (fenv_t const *envp), ); _GL_CXXALIAS_RPL (fesetenv, int, (fenv_t const *envp)); # else # if !@HAVE_FESETENV@ _GL_FUNCDECL_SYS (fesetenv, int, (fenv_t const *envp), ); # endif _GL_CXXALIAS_SYS (fesetenv, int, (fenv_t const *envp)); # endif _GL_CXXALIASWARN (fesetenv); #endif #if @GNULIB_FEUPDATEENV@ /* Activates the given object *ENVP as the thread's current floating-point environment, raising exactly those floating-point exceptions that were raised before, and returns zero. ENVP may be FE_DFL_ENV. Upon failure, it returns non-zero. */ # if @REPLACE_FEUPDATEENV@ || (!@HAVE_FEUPDATEENV@ && (defined __FreeBSD__ || defined _MSC_VER)) /* has an inline definition */ # if !(defined __cplusplus && defined GNULIB_NAMESPACE) # undef feupdateenv # define feupdateenv rpl_feupdateenv # endif _GL_FUNCDECL_RPL (feupdateenv, int, (fenv_t const *envp), ); _GL_CXXALIAS_RPL (feupdateenv, int, (fenv_t const *envp)); # else # if !@HAVE_FEUPDATEENV@ _GL_FUNCDECL_SYS (feupdateenv, int, (fenv_t const *envp), ); # endif _GL_CXXALIAS_SYS (feupdateenv, int, (fenv_t const *envp)); # endif _GL_CXXALIASWARN (feupdateenv); #endif #if @GNULIB_FEHOLDEXCEPT@ /* Stores the thread's current floating-point environment in *ENVP, clears the floating-point exception status flags, disables trapping for all floating-point exceptions, and returns zero. Upon failure, it returns non-zero. */ # if @REPLACE_FEHOLDEXCEPT@ || (!@HAVE_FEHOLDEXCEPT@ && defined __FreeBSD__) /* has an inline definition */ # if !(defined __cplusplus && defined GNULIB_NAMESPACE) # undef feholdexcept # define feholdexcept rpl_feholdexcept # endif _GL_FUNCDECL_RPL (feholdexcept, int, (fenv_t *envp), ); _GL_CXXALIAS_RPL (feholdexcept, int, (fenv_t *envp)); # else # if !@HAVE_FEHOLDEXCEPT@ _GL_FUNCDECL_SYS (feholdexcept, int, (fenv_t *envp), ); # endif _GL_CXXALIAS_SYS (feholdexcept, int, (fenv_t *envp)); # endif _GL_CXXALIASWARN (feholdexcept); #endif /* ISO C 99 § 7.6.3 Rounding ISO C 23 § 7.6.5 Rounding */ #if !@HAVE_FENV_H@ # if (defined __x86_64__ || defined _M_X64) || (defined __i386 || defined _M_IX86) /* Attention: MSVC has different values for these macros! */ # define FE_TONEAREST (0 << 10) # define FE_DOWNWARD (1 << 10) # define FE_UPWARD (2 << 10) # define FE_TOWARDZERO (3 << 10) # elif defined __aarch64__ /* arm64 */ /* Attention: FreeBSD libc has these values shifted right by 22 bits! */ # define FE_TONEAREST (0 << 22) # define FE_UPWARD (1 << 22) # define FE_DOWNWARD (2 << 22) # define FE_TOWARDZERO (3 << 22) # elif defined __arm__ # define FE_TONEAREST (0 << 22) # if !defined __SOFTFP__ # define FE_UPWARD (1 << 22) # define FE_DOWNWARD (2 << 22) # define FE_TOWARDZERO (3 << 22) # endif # elif defined __alpha # define FE_TOWARDZERO 0 # define FE_DOWNWARD 1 # define FE_TONEAREST 2 # define FE_UPWARD 3 # elif defined __hppa # define FE_TONEAREST (0 << 9) # define FE_TOWARDZERO (1 << 9) # define FE_UPWARD (2 << 9) # define FE_DOWNWARD (3 << 9) # elif defined __ia64__ # define FE_TONEAREST 0 # define FE_DOWNWARD 1 # define FE_UPWARD 2 # define FE_TOWARDZERO 3 # elif defined __m68k__ # define FE_TONEAREST (0 << 4) # define FE_TOWARDZERO (1 << 4) # define FE_DOWNWARD (2 << 4) # define FE_UPWARD (3 << 4) # elif defined __mips__ # define FE_TONEAREST 0 # define FE_TOWARDZERO 1 # define FE_UPWARD 2 # define FE_DOWNWARD 3 # elif defined __loongarch__ # define FE_TONEAREST (0 << 8) # define FE_TOWARDZERO (1 << 8) # define FE_UPWARD (2 << 8) # define FE_DOWNWARD (3 << 8) # elif defined __powerpc__ /* Attention: AIX has different values for these macros! */ # define FE_TONEAREST 0 # define FE_TOWARDZERO 1 # define FE_UPWARD 2 # define FE_DOWNWARD 3 # elif defined __riscv /* Attention: FreeBSD libc has these values shifted left by 5 bits! */ # define FE_TONEAREST 0 # define FE_TOWARDZERO 1 # define FE_DOWNWARD 2 # define FE_UPWARD 3 # if 0 /* non-standard */ # define FE_TONEARESTMAXMAGNITUDE 4 # endif # elif defined __s390__ || defined __s390x__ # define FE_TONEAREST 0 # define FE_TOWARDZERO 1 # define FE_UPWARD 2 # define FE_DOWNWARD 3 # elif defined __sh__ # define FE_TONEAREST 0 # define FE_TOWARDZERO 1 # elif defined __sparc /* Attention: FreeBSD libc has these values shifted right by 30 bits! */ # define FE_TONEAREST (0U << 30) # define FE_TOWARDZERO (1U << 30) # define FE_UPWARD (2U << 30) # define FE_DOWNWARD (3U << 30) #else /* A dummy fallback. */ # define FE_TONEAREST 0 # endif #endif #if @GNULIB_FEGETROUND@ /* Returns the current rounding direction. */ # if @REPLACE_FEGETROUND@ || (!@HAVE_FEGETROUND@ && (defined __GLIBC__ || defined __FreeBSD__)) /* has an inline definition */ # if !(defined __cplusplus && defined GNULIB_NAMESPACE) # undef fegetround # define fegetround rpl_fegetround # endif _GL_FUNCDECL_RPL (fegetround, int, (void), ); _GL_CXXALIAS_RPL (fegetround, int, (void)); # else # if !@HAVE_FEGETROUND@ _GL_FUNCDECL_SYS (fegetround, int, (void), ); # endif _GL_CXXALIAS_SYS (fegetround, int, (void)); # endif _GL_CXXALIASWARN (fegetround); #endif #if @GNULIB_FESETROUND@ /* Sets the rounding direction of the current thread. Returns zero if the argument is valid and the operation was thus successful. Returns non-zero upon failure. */ # if @REPLACE_FESETROUND@ || (!@HAVE_FESETROUND@ && defined __FreeBSD__) /* has an inline definition */ # if !(defined __cplusplus && defined GNULIB_NAMESPACE) # undef fesetround # define fesetround rpl_fesetround # endif _GL_FUNCDECL_RPL (fesetround, int, (int rounding_direction), ); _GL_CXXALIAS_RPL (fesetround, int, (int rounding_direction)); # else # if !@HAVE_FESETROUND@ _GL_FUNCDECL_SYS (fesetround, int, (int rounding_direction), ); # endif _GL_CXXALIAS_SYS (fesetround, int, (int rounding_direction)); # endif _GL_CXXALIASWARN (fesetround); #endif /* ISO C 99 § 7.6.2 Floating-point exceptions ISO C 23 § 7.6.4 Floating-point exceptions API without fexcept_t */ #if !@HAVE_FENV_H@ # if (defined __x86_64__ || defined _M_X64) || (defined __i386 || defined _M_IX86) /* Attention: MSVC has different values for these macros! */ # define FE_INVALID (1 << 0) # if 0 /* non-standard */ # define FE_DENORMAL (1 << 1) # endif # define FE_DIVBYZERO (1 << 2) # define FE_OVERFLOW (1 << 3) # define FE_UNDERFLOW (1 << 4) # define FE_INEXACT (1 << 5) # elif defined __aarch64__ /* arm64 */ || defined __arm__ # define FE_INVALID (1U << 0) # define FE_DIVBYZERO (1U << 1) # define FE_OVERFLOW (1U << 2) # define FE_UNDERFLOW (1U << 3) # define FE_INEXACT (1U << 4) # elif defined __alpha /* Attention: The *BSDs have these values shifted right by 17 bits! */ # define FE_INVALID (1UL << 17) # define FE_DIVBYZERO (1UL << 18) # define FE_OVERFLOW (1UL << 19) # define FE_UNDERFLOW (1UL << 20) # define FE_INEXACT (1UL << 21) # if 0 /* non-standard */ # define FE_DENORMAL (1UL << 22) # endif # elif defined __hppa # define FE_INEXACT (1U << 0) # define FE_UNDERFLOW (1U << 1) # define FE_OVERFLOW (1U << 2) # define FE_DIVBYZERO (1U << 3) # define FE_INVALID (1U << 4) # elif defined __ia64__ # define FE_INVALID (1UL << 0) # if 0 /* non-standard */ # define FE_UNNORMAL (1UL << 1) # endif # define FE_DIVBYZERO (1UL << 2) # define FE_OVERFLOW (1UL << 3) # define FE_UNDERFLOW (1UL << 4) # define FE_INEXACT (1UL << 5) # elif defined __m68k__ # define FE_INEXACT (1U << 3) # define FE_DIVBYZERO (1U << 4) # define FE_UNDERFLOW (1U << 5) # define FE_OVERFLOW (1U << 6) # define FE_INVALID (1U << 7) # elif defined __mips__ # define FE_INEXACT (1 << 2) # define FE_UNDERFLOW (1 << 3) # define FE_OVERFLOW (1 << 4) # define FE_DIVBYZERO (1 << 5) # define FE_INVALID (1 << 6) # elif defined __loongarch__ # define FE_INEXACT (1U << 16) # define FE_UNDERFLOW (1U << 17) # define FE_OVERFLOW (1U << 18) # define FE_DIVBYZERO (1U << 19) # define FE_INVALID (1U << 20) # elif defined __powerpc__ # define FE_INEXACT (1U << 25) # define FE_DIVBYZERO (1U << 26) # define FE_UNDERFLOW (1U << 27) # define FE_OVERFLOW (1U << 28) # define FE_INVALID (1U << 29) # elif defined __riscv # define FE_INEXACT (1U << 0) # define FE_UNDERFLOW (1U << 1) # define FE_OVERFLOW (1U << 2) # define FE_DIVBYZERO (1U << 3) # define FE_INVALID (1U << 4) # elif defined __s390__ || defined __s390x__ /* Attention: musl libc has these values shifted left by 16 bits! */ # define FE_INEXACT (1U << 3) # define FE_UNDERFLOW (1U << 4) # define FE_OVERFLOW (1U << 5) # define FE_DIVBYZERO (1U << 6) # define FE_INVALID (1U << 7) # elif defined __sh__ # define FE_INEXACT (1 << 2) # define FE_UNDERFLOW (1 << 3) # define FE_OVERFLOW (1 << 4) # define FE_DIVBYZERO (1 << 5) # define FE_INVALID (1 << 6) # elif defined __sparc /* Attention: Solaris has these values shifted right by 5 bits! */ # define FE_INEXACT (1UL << 5) # define FE_DIVBYZERO (1UL << 6) # define FE_UNDERFLOW (1UL << 7) # define FE_OVERFLOW (1UL << 8) # define FE_INVALID (1UL << 9) # endif # define FE_ALL_EXCEPT \ (FE_DIVBYZERO | FE_INEXACT | FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW) #endif #if @GNULIB_FECLEAREXCEPT@ /* Clears the specified exception flags, and returns 0. Upon failure, it returns non-zero. */ # if @REPLACE_FECLEAREXCEPT@ || (!@HAVE_FECLEAREXCEPT@ && (defined __GLIBC__ || defined __FreeBSD__)) /* has an inline definition */ # if !(defined __cplusplus && defined GNULIB_NAMESPACE) # undef feclearexcept # define feclearexcept rpl_feclearexcept # endif _GL_FUNCDECL_RPL (feclearexcept, int, (int exceptions), ); _GL_CXXALIAS_RPL (feclearexcept, int, (int exceptions)); # else # if !@HAVE_FECLEAREXCEPT@ _GL_FUNCDECL_SYS (feclearexcept, int, (int exceptions), ); # endif _GL_CXXALIAS_SYS (feclearexcept, int, (int exceptions)); # endif _GL_CXXALIASWARN (feclearexcept); #endif #if @GNULIB_FERAISEEXCEPT@ /* Sets the specified exception flags, triggering handlers or traps if enabled, and returns 0. Upon failure, it returns non-zero. */ # if @REPLACE_FERAISEEXCEPT@ || (!@HAVE_FERAISEEXCEPT@ && (defined __GLIBC__ || defined __FreeBSD__ || defined _MSC_VER)) /* has an inline definition */ # if !(defined __cplusplus && defined GNULIB_NAMESPACE) # undef feraiseexcept # define feraiseexcept rpl_feraiseexcept # endif _GL_FUNCDECL_RPL (feraiseexcept, int, (int exceptions), ); _GL_CXXALIAS_RPL (feraiseexcept, int, (int exceptions)); # else # if !@HAVE_FERAISEEXCEPT@ _GL_FUNCDECL_SYS (feraiseexcept, int, (int exceptions), ); # endif _GL_CXXALIAS_SYS (feraiseexcept, int, (int exceptions)); # endif _GL_CXXALIASWARN (feraiseexcept); #endif #if @GNULIB_FETESTEXCEPT@ /* Returns a bitmask of those exception flags among EXCEPTIONS that are currently set. */ # if @REPLACE_FETESTEXCEPT@ || (!@HAVE_FETESTEXCEPT@ && defined __FreeBSD__) /* has an inline definition */ # if !(defined __cplusplus && defined GNULIB_NAMESPACE) # undef fetestexcept # define fetestexcept rpl_fetestexcept # endif _GL_FUNCDECL_RPL (fetestexcept, int, (int exceptions), ); _GL_CXXALIAS_RPL (fetestexcept, int, (int exceptions)); # else # if !@HAVE_FETESTEXCEPT@ _GL_FUNCDECL_SYS (fetestexcept, int, (int exceptions), ); # endif _GL_CXXALIAS_SYS (fetestexcept, int, (int exceptions)); # endif _GL_CXXALIASWARN (fetestexcept); #endif /* Added in ISO C 23 § 7.6.4 Floating-point exceptions. */ #if @GNULIB_FESETEXCEPT@ /* Sets the specified exception flags, without triggering handlers or traps, and returns 0. Upon failure, it returns non-zero. */ # if @REPLACE_FESETEXCEPT@ # if !(defined __cplusplus && defined GNULIB_NAMESPACE) # undef fesetexcept # define fesetexcept rpl_fesetexcept # endif _GL_FUNCDECL_RPL (fesetexcept, int, (int exceptions), ); _GL_CXXALIAS_RPL (fesetexcept, int, (int exceptions)); # else # if !@HAVE_FESETEXCEPT@ _GL_FUNCDECL_SYS (fesetexcept, int, (int exceptions), ); # endif _GL_CXXALIAS_SYS (fesetexcept, int, (int exceptions)); # endif _GL_CXXALIASWARN (fesetexcept); #elif defined GNULIB_POSIXCHECK # undef fesetexcept # if HAVE_RAW_DECL_FESETEXCEPT _GL_WARN_ON_USE (fesetexcept, "fesetexcept is unportable - " "use gnulib module fenv-exceptions-tracking-c23 for portability"); # endif #endif /* GNU extensions. */ #if @GNULIB_FEENABLEEXCEPT@ /* Enables trapping for the floating-point exceptions denoted by the bit mask EXCEPTIONS. Returns the bit mask of floating-point exceptions for which trapping was enabled before the call, or -1 upon failure. Note: This function is a misnomer. It does not enable the specified floating-point exceptions; it enables *trapping* on them. It should better be called 'feenabletraps'. */ # if @REPLACE_FEENABLEEXCEPT@ || (!@HAVE_FEENABLEEXCEPT@ && defined __FreeBSD__) /* has an inline definition */ # if !(defined __cplusplus && defined GNULIB_NAMESPACE) # undef feenableexcept # define feenableexcept rpl_feenableexcept # endif _GL_FUNCDECL_RPL (feenableexcept, int, (int exceptions), ); _GL_CXXALIAS_RPL (feenableexcept, int, (int exceptions)); # else # if !@HAVE_FEENABLEEXCEPT@ _GL_FUNCDECL_SYS (feenableexcept, int, (int exceptions), ); # endif _GL_CXXALIAS_SYS (feenableexcept, int, (int exceptions)); # endif _GL_CXXALIASWARN (feenableexcept); #elif defined GNULIB_POSIXCHECK # undef feenableexcept # if HAVE_RAW_DECL_FEENABLEEXCEPT _GL_WARN_ON_USE (feenableexcept, "feenableexcept is unportable - " "use gnulib module fenv-exceptions-trapping for portability"); # endif #endif #if @GNULIB_FEDISABLEEXCEPT@ /* Disables trapping for the floating-point exceptions denoted by the bit mask EXCEPTIONS. Returns the bit mask of floating-point exceptions for which trapping was enabled before the call, or -1 upon failure. Note: This function is a misnomer. It does not disable the specified floating-point exceptions; it disables *trapping* on them. It should better be called 'fedisabletraps'. */ # if @REPLACE_FEDISABLEEXCEPT@ || (!@HAVE_FEDISABLEEXCEPT@ && defined __FreeBSD__) /* has an inline definition */ # if !(defined __cplusplus && defined GNULIB_NAMESPACE) # undef fedisableexcept # define fedisableexcept rpl_fedisableexcept # endif _GL_FUNCDECL_RPL (fedisableexcept, int, (int exceptions), ); _GL_CXXALIAS_RPL (fedisableexcept, int, (int exceptions)); # else # if !@HAVE_FEDISABLEEXCEPT@ _GL_FUNCDECL_SYS (fedisableexcept, int, (int exceptions), ); # endif _GL_CXXALIAS_SYS (fedisableexcept, int, (int exceptions)); # endif _GL_CXXALIASWARN (fedisableexcept); #elif defined GNULIB_POSIXCHECK # undef fedisableexcept # if HAVE_RAW_DECL_FEDISABLEEXCEPT _GL_WARN_ON_USE (fedisableexcept, "fedisableexcept is unportable - " "use gnulib module fenv-exceptions-trapping for portability"); # endif #endif #if @GNULIB_FEGETEXCEPT@ /* Returns the bit mask of floating-point exceptions for which trapping is enabled. Note: This function is an even bigger misnomer: - It does not test for the specified floating-point exceptions; fetestexcept() does that. It tests whether *trapping* on these exceptions is enabled. - It is in no way the opposite of fesetexcept(). It should better be called 'fegettraps'. */ # if @REPLACE_FEGETEXCEPT@ || (!@HAVE_FEGETEXCEPT@ && defined __FreeBSD__) /* has an inline definition */ # if !(defined __cplusplus && defined GNULIB_NAMESPACE) # undef fegetexcept # define fegetexcept rpl_fegetexcept # endif _GL_FUNCDECL_RPL (fegetexcept, int, (void), ); _GL_CXXALIAS_RPL (fegetexcept, int, (void)); # else # if !@HAVE_FEGETEXCEPT@ _GL_FUNCDECL_SYS (fegetexcept, int, (void), ); # endif _GL_CXXALIAS_SYS (fegetexcept, int, (void)); # endif _GL_CXXALIASWARN (fegetexcept); #elif defined GNULIB_POSIXCHECK # undef fegetexcept # if HAVE_RAW_DECL_FEGETEXCEPT _GL_WARN_ON_USE (fegetexcept, "fegetexcept is unportable - " "use gnulib module fenv-exceptions-trapping for portability"); # endif #endif /* ISO C 99 § 7.6.2 Floating-point exceptions ISO C 23 § 7.6.4 Floating-point exceptions API with fexcept_t. The return type changed from 'void' to 'int' in ISO C 11. */ #if !@HAVE_FENV_H@ # if (defined __x86_64__ || defined _M_X64) || (defined __i386 || defined _M_IX86) typedef unsigned short fexcept_t; # elif defined __aarch64__ /* arm64 */ || defined __arm__ typedef unsigned int fexcept_t; # elif defined __alpha typedef unsigned long fexcept_t; # elif defined __hppa typedef unsigned int fexcept_t; # elif defined __ia64__ typedef unsigned long fexcept_t; # elif defined __m68k__ typedef unsigned int fexcept_t; # elif defined __mips__ typedef unsigned short fexcept_t; # elif defined __loongarch__ typedef unsigned int fexcept_t; # elif defined __powerpc__ typedef unsigned int fexcept_t; # elif defined __riscv typedef unsigned int fexcept_t; # elif defined __s390__ || defined __s390x__ typedef unsigned int fexcept_t; # elif defined __sh__ typedef unsigned short fexcept_t; # elif defined __sparc typedef unsigned long fexcept_t; # else /* A dummy fallback. */ typedef unsigned long fexcept_t; # endif #endif #if @GNULIB_FEGETEXCEPTFLAG@ /* Stores the current floating-point exception status flags denoted by EXCEPTIONS in *SAVED_FLAGS. */ # if @REPLACE_FEGETEXCEPTFLAG@ || (!@HAVE_FEGETEXCEPTFLAG@ && defined __FreeBSD__) /* has an inline definition */ # if !(defined __cplusplus && defined GNULIB_NAMESPACE) # undef fegetexceptflag # define fegetexceptflag rpl_fegetexceptflag # endif _GL_FUNCDECL_RPL (fegetexceptflag, int, (fexcept_t *saved_flags, int exceptions), ); _GL_CXXALIAS_RPL (fegetexceptflag, int, (fexcept_t *saved_flags, int exceptions)); # else # if !@HAVE_FEGETEXCEPTFLAG@ _GL_FUNCDECL_SYS (fegetexceptflag, int, (fexcept_t *saved_flags, int exceptions), ); # endif _GL_CXXALIAS_SYS (fegetexceptflag, int, (fexcept_t *saved_flags, int exceptions)); # endif _GL_CXXALIASWARN (fegetexceptflag); #endif #if @GNULIB_FESETEXCEPTFLAG@ /* Copies the flags denoted by EXCEPTIONS from *SAVED_FLAGS to the floating-point exception status flags. */ # if @REPLACE_FESETEXCEPTFLAG@ || (!@HAVE_FESETEXCEPTFLAG@ && defined __FreeBSD__) /* has an inline definition */ # if !(defined __cplusplus && defined GNULIB_NAMESPACE) # undef fesetexceptflag # define fesetexceptflag rpl_fesetexceptflag # endif _GL_FUNCDECL_RPL (fesetexceptflag, int, (fexcept_t const *saved_flags, int exceptions), ); _GL_CXXALIAS_RPL (fesetexceptflag, int, (fexcept_t const *saved_flags, int exceptions)); # else # if !@HAVE_FESETEXCEPTFLAG@ _GL_FUNCDECL_SYS (fesetexceptflag, int, (fexcept_t const *saved_flags, int exceptions), ); # endif _GL_CXXALIAS_SYS (fesetexceptflag, int, (fexcept_t const *saved_flags, int exceptions)); # endif _GL_CXXALIASWARN (fesetexceptflag); #endif /* Added in ISO C 23 § 7.6.4 Floating-point exceptions. */ #if @GNULIB_FETESTEXCEPTFLAG@ /* Copies the flags denoted by EXCEPTIONS from *SAVED_FLAGS to the floating-point exception status flags. */ # if 0 # if !(defined __cplusplus && defined GNULIB_NAMESPACE) # undef fetestexceptflag # define fetestexceptflag rpl_fetestexceptflag # endif _GL_FUNCDECL_RPL (fetestexceptflag, int, (fexcept_t const *saved_flags, int exceptions), ); _GL_CXXALIAS_RPL (fetestexceptflag, int, (fexcept_t const *saved_flags, int exceptions)); # else # if !@HAVE_FETESTEXCEPTFLAG@ _GL_FUNCDECL_SYS (fetestexceptflag, int, (fexcept_t const *saved_flags, int exceptions), ); # endif _GL_CXXALIAS_SYS (fetestexceptflag, int, (fexcept_t const *saved_flags, int exceptions)); # endif _GL_CXXALIASWARN (fetestexceptflag); #elif defined GNULIB_POSIXCHECK # undef fetestexceptflag # if HAVE_RAW_DECL_FETESTEXCEPTFLAG _GL_WARN_ON_USE (fetestexceptflag, "fetestexceptflag is unportable - " "use gnulib module fenv-exceptions-state-c23 for portability"); # endif #endif #endif /* _@GUARD_PREFIX@_FENV_H */ #endif /* _@GUARD_PREFIX@_FENV_H */