From eda162dd8a7d2ca0b1900aa57a78b9586800b4ec Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Mon, 30 Oct 2017 20:58:51 +0000 Subject: Remove _Mlong_double_ etc. macros. math.h has a macro _Mlong_double_ for the type to use when declaring long double functions, and similar macros for other types. math/Makefile uses -D_Mlong_double_=double in the case of long double having the same ABI as double. This originates with: Mon Jul 8 13:37:40 1996 Roland McGrath * math/math.h (_Mfloat_, _Mlong_double_): New macros, defined iff not already defined to float, long double. Use those macros for _Mdouble_ defns when including mathcalls.h. * math/Makefile [$(long-double-fcts) != yes] (CPPFLAGS): Append -D_Mlong_double_=double. However, math.h stopped declaring long double functions in the case of long double having the same ABI as double (and thus probably stopped actually needing the Makefile definition of _Mlong_double_) with: 1998-11-05 Ulrich Drepper * math/math.h: Unconditionally include bits/mathdef.h. Declare long double functions only if __NO_LONG_DOUBLE_MATH is not defined. * sysdeps/generic/bits/mathdef.h: Define only if __USE_ISOC9X. Define __NO_LONG_DOUBLE_MATH. * sysdeps/m68k/fpu/bits/mathdef.h: Define only if __USE_ISOC9X. * sysdeps/i386/fpu/bits/mathdef.h: Likewise. The declarations were since restored for compiling user code, but remain absent when _LIBC is defined, which is sufficient to avoid problems declaring function aliases of incompatible types. Thus the indirection through the _Mlong_double_ macro is not needed (probably since that 1998 patch), and this patch removes _Mlong_double_ and associated macros for other types, leaving only the macro _Mdouble_ which is actually used as the type for which a given inclusion of should declared functions. Tested for x86_64, and tested with build-many-glibcs.py that installed stripped shared libraries are unchanged by this patch. * math/math.h [!_Mfloat_] (_Mfloat_): Do not define. [!_Mlong_double_] (_Mlong_double_): Likewise. [!_Mfloat16_] (_Mfloat16_): Likewise. [!_Mfloat32_] (_Mfloat32_): Likewise. [!_Mfloat64_] (_Mfloat64_): Likewise. [!_Mfloat128_] (_Mfloat128_): Likewise. [!_Mfloat32x_] (_Mfloat32x_): Likewise. [!_Mfloat64x_] (_Mfloat64x_): Likewise. [!_Mfloat128x_] (_Mfloat128x_): Likewise. (_Mdouble_): Define without indirection through those macros. * math/complex.h [!_Mfloat_] (_Mfloat_): Do not define. [!_Mfloat128_] (_Mfloat128_): Likewise. [_Mlong_double_] (_Mlong_double_): Likewise. (_Mdouble_): Define without indirection through those macros. * math/Makefile [$(long-double-fcts) != yes] (math-CPPFLAGS): Do not add -D_Mlong_double_=double. * include/math.h [_ISOMAC] (_Mlong_double_): Do not undefine. * math/test-signgam-finite-c99.c (_Mlong_double_): Likewise. --- math/complex.h | 15 +++------------ 1 file changed, 3 insertions(+), 12 deletions(-) (limited to 'math/complex.h') diff --git a/math/complex.h b/math/complex.h index 1ae4ec2..9a6cc3e 100644 --- a/math/complex.h +++ b/math/complex.h @@ -83,10 +83,7 @@ __BEGIN_DECLS #undef __MATH_PRECNAME /* Now the float versions. */ -#ifndef _Mfloat_ -# define _Mfloat_ float -#endif -#define _Mdouble_ _Mfloat_ +#define _Mdouble_ float #define __MATH_PRECNAME(name) name##f #include #undef _Mdouble_ @@ -94,15 +91,12 @@ __BEGIN_DECLS #if (__HAVE_DISTINCT_FLOAT128 || (__HAVE_FLOAT128 && !defined _LIBC)) \ && __GLIBC_USE (IEC_60559_TYPES_EXT) -# ifndef _Mfloat128_ -# define _Mfloat128_ _Float128 -# endif /* GCC < 7 requires extra convincing to expose a complex float128 type. */ # ifdef __CFLOAT128 # undef _Mdouble_complex_ # define _Mdouble_complex_ __CFLOAT128 # endif -# define _Mdouble_ _Mfloat128_ +# define _Mdouble_ _Float128 # define __MATH_PRECNAME(name) name##f128 # include # undef _Mdouble_ @@ -120,10 +114,7 @@ __BEGIN_DECLS extern type __REDIRECT_NTH(__MATH_PRECNAME(function), args, function) # endif -# ifndef _Mlong_double_ -# define _Mlong_double_ long double -# endif -# define _Mdouble_ _Mlong_double_ +# define _Mdouble_ long double # define __MATH_PRECNAME(name) name##l # include #endif -- cgit v1.1