Add libm_alias_*_other_r macros.

Some libm functions are unable to use the generic alias macros such as
libm_alias_double because they have special symbol versioning
requirements for the main float, double or long double public names.

To facilitate adding _FloatN / _FloatNx function aliases in future,
it's still desirable to have generic macros those functions can use as
far as possible.  This patch adds macros such as
libm_alias_double_other, which only define names for _FloatN /
_FloatNx aliases, not for float / double / long double.  As present,
all these new macros do nothing, but they are called in the
appropriate places in macros such as libm_alias_double.  This patch
also arranges for lgamma implementations, and the recently added
optimized float function implementations, to use the new macros to
make them ready for addition of _FloatN / _FloatNx aliases.

Tested for x86_64, and tested with build-many-glibcs.py that installed
stripped shared libraries are unchanged by this patch.

	* sysdeps/generic/libm-alias-double.h (libm_alias_double_other_r):
	New macro.
	(libm_alias_double_other): Likewise.
	(libm_alias_double_r): Use libm_alias_double_other_r.
	* sysdeps/generic/libm-alias-float.h (libm_alias_float_other_r):
	New macro.
	(libm_alias_float_other): Likewise.
	(libm_alias_float_r): Use libm_alias_float_other_r.
	* sysdeps/generic/libm-alias-float128.h
	(libm_alias_float128_other_r): New macro.
	(libm_alias_float128_other): Likewise.
	(libm_alias_float128_r): Use libm_alias_float128_other_r.
	* sysdeps/generic/libm-alias-ldouble.h
	(libm_alias_ldouble_other_r): New macro.
	(libm_alias_ldouble_other): Likewise.
	(libm_alias_ldouble_r): Use libm_alias_ldouble_other_r.
	* sysdeps/ieee754/ldbl-opt/libm-alias-double.h
	(libm_alias_double_other_r): New macro.
	(libm_alias_double_other): Likewise.
	(libm_alias_double_r): Use libm_alias_double_other_r.
	* sysdeps/ieee754/ldbl-opt/libm-alias-ldouble.h
	(libm_alias_ldouble_other_r): New macro.
	(libm_alias_ldouble_other): Likewise.
	(libm_alias_ldouble_r): Use libm_alias_ldouble_other_r.
	* math/w_lgamma_main.c: Include <libm-alias-double.h>.
	[!USE_AS_COMPAT]: Use libm_alias_double_other.
	* math/w_lgammaf_main.c: Include <libm-alias-float.h>.
	[!USE_AS_COMPAT]: Use libm_alias_float_other.
	* math/w_lgammal_main.c: Include <libm-alias-ldouble.h>.
	[!USE_AS_COMPAT]: Use libm_alias_ldouble_other.
	* math/w_exp2f.c: Use libm_alias_float_other.
	* math/w_expf.c: Likewise.
	* math/w_log2f.c: Likewise.
	* math/w_logf.c: Likewise.
	* math/w_powf.c: Likewise.
	* sysdeps/ieee754/flt-32/e_exp2f.c: Include <libm-alias-float.h>.
	[!__exp2f]: Use libm_alias_float_other.
	* sysdeps/ieee754/flt-32/e_expf.c: Include <libm-alias-float.h>.
	[!__expf]: Use libm_alias_float_other.
	* sysdeps/ieee754/flt-32/e_log2f.c: Include <libm-alias-float.h>.
	[!__log2f]: Use libm_alias_float_other.
	* sysdeps/ieee754/flt-32/e_logf.c: Include <libm-alias-float.h>.
	[!__logf]: Use libm_alias_float_other.
	* sysdeps/ieee754/flt-32/e_powf.c: Include <libm-alias-float.h>.
	[!__powf]: Use libm_alias_float_other.

8 files changed, 11 insertions, 0 deletions

diff --git a/math/w_exp2f.c b/math/w_exp2f.c
index 948d745..71aadce 100644
--- a/math/w_exp2f.c
+++ b/math/w_exp2f.c
@@ -5,3 +5,4 @@
 #define declare_mgen_alias(a, b)
 #include <w_exp2_template.c>
 versioned_symbol (libm, __exp2f, exp2f, GLIBC_2_27);
+libm_alias_float_other (__exp2, exp2)
diff --git a/math/w_expf.c b/math/w_expf.c
index 6d5f03c..00d191e 100644
--- a/math/w_expf.c
+++ b/math/w_expf.c
@@ -5,3 +5,4 @@
 #define declare_mgen_alias(a, b)
 #include <w_exp_template.c>
 versioned_symbol (libm, __expf, expf, GLIBC_2_27);
+libm_alias_float_other (__exp, exp)
diff --git a/math/w_lgamma_main.c b/math/w_lgamma_main.c
index 7dbba22..ac91b9d 100644
--- a/math/w_lgamma_main.c
+++ b/math/w_lgamma_main.c
@@ -19,6 +19,7 @@
 #include <math.h>
 #include <math_private.h>
 #include <math-svid-compat.h>
+#include <libm-alias-double.h>
 
 #include <lgamma-compat.h>
 
@@ -48,6 +49,7 @@ versioned_symbol (libm, __lgamma, lgamma, LGAMMA_NEW_VER);
 strong_alias (__lgamma, __lgammal)
 versioned_symbol (libm, __lgammal, lgammal, LGAMMA_NEW_VER);
 #  endif
+libm_alias_double_other (__lgamma, lgamma)
 # endif
 # if GAMMA_ALIAS
 strong_alias (LGFUNC (__lgamma), __gamma)
diff --git a/math/w_lgammaf_main.c b/math/w_lgammaf_main.c
index a3d7e1a..ef60659 100644
--- a/math/w_lgammaf_main.c
+++ b/math/w_lgammaf_main.c
@@ -16,6 +16,7 @@
 #include <math.h>
 #include <math_private.h>
 #include <math-svid-compat.h>
+#include <libm-alias-float.h>
 
 #include <lgamma-compat.h>
 
@@ -37,6 +38,7 @@ LGFUNC (__lgammaf) (float x)
 compat_symbol (libm, __lgammaf_compat, lgammaf, LGAMMA_OLD_VER);
 # else
 versioned_symbol (libm, __lgammaf, lgammaf, LGAMMA_NEW_VER);
+libm_alias_float_other (__lgamma, lgamma)
 # endif
 # if GAMMA_ALIAS
 strong_alias (LGFUNC (__lgammaf), __gammaf)
diff --git a/math/w_lgammal_main.c b/math/w_lgammal_main.c
index 447fb97..f269cef 100644
--- a/math/w_lgammal_main.c
+++ b/math/w_lgammal_main.c
@@ -23,6 +23,7 @@
 #include <math.h>
 #include <math_private.h>
 #include <math-svid-compat.h>
+#include <libm-alias-ldouble.h>
 
 #include <lgamma-compat.h>
 
@@ -44,6 +45,7 @@ LGFUNC (__lgammal) (long double x)
 compat_symbol (libm, __lgammal_compat, lgammal, LGAMMA_OLD_VER);
 # else
 versioned_symbol (libm, __lgammal, lgammal, LGAMMA_NEW_VER);
+libm_alias_ldouble_other (__lgamma, lgamma)
 # endif
 # if GAMMA_ALIAS
 strong_alias (LGFUNC (__lgammal), __gammal)
diff --git a/math/w_log2f.c b/math/w_log2f.c
index cda0c3a..d21b602 100644
--- a/math/w_log2f.c
+++ b/math/w_log2f.c
@@ -5,3 +5,4 @@
 #define declare_mgen_alias(a, b)
 #include <w_log2_template.c>
 versioned_symbol (libm, __log2f, log2f, GLIBC_2_27);
+libm_alias_float_other (__log2, log2)
diff --git a/math/w_logf.c b/math/w_logf.c
index d960e01..63736f4 100644
--- a/math/w_logf.c
+++ b/math/w_logf.c
@@ -5,3 +5,4 @@
 #define declare_mgen_alias(a, b)
 #include <w_log_template.c>
 versioned_symbol (libm, __logf, logf, GLIBC_2_27);
+libm_alias_float_other (__log, log)
diff --git a/math/w_powf.c b/math/w_powf.c
index a183483..aea9058 100644
--- a/math/w_powf.c
+++ b/math/w_powf.c
@@ -5,3 +5,4 @@
 #define declare_mgen_alias(a, b)
 #include <w_pow_template.c>
 versioned_symbol (libm, __powf, powf, GLIBC_2_27);
+libm_alias_float_other (__pow, pow)