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Use generic macros for lgamma_r function aliases.

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Continuing the use of generic macros for defining libm function
aliases, in preparation for adding more _FloatN / _FloatNx function
names, this patch makes the lgamma_r functions use such macros.

declare_mgen_alias_r becomes a standard macro in math-type-macros.h
instead of being locally defined in w_lgamma_r_templace.c.  This in
turn must be defined by each math-type-macros-<type>.h.  Rather than
providing an unused default in math-type-macros.h, that header is made
to give an error if math-type-macros-<type>.h failed to define
declare_mgen_alias or declare_mgen_alias_r.  The compat lgamma_r
wrappers are updated similarly.  The ldbl-opt versions are removed as
no longer needed.

Tested for x86_64, and with build-many-glibcs.py.  Installed stripped
shared libraries are unchanged except for powerpc64le (where the usual
issue applies that an ldbl-opt long double function previously used
long_double_symbol unconditionally and now the symbol versions on
powerpc64le mean weak_alias is used instead, resulting in the same
symbol versions in the final shared library but still enough
difference in the input objects for that library not to be
byte-identical).

	* sysdeps/generic/math-type-macros.h [!declare_mgen_alias]: Give
	error.  Remove default definition of declare_mgen_alias.
	[!declare_mgen_alias_r]: Likewise.
	* sysdeps/generic/math-type-macros-double.h
	[!declare_mgen_alias_r] (declare_mgen_alias_r): New macro.
	* sysdeps/generic/math-type-macros-float.h [!declare_mgen_alias_r]
	(declare_mgen_alias_r): Likewise.
	* sysdeps/generic/math-type-macros-float128.h
	[!declare_mgen_alias_r] (declare_mgen_alias_r): Likewise.
	* sysdeps/generic/math-type-macros-ldouble.h
	[!declare_mgen_alias_r] (declare_mgen_alias_r): Likewise.
	* math/w_lgamma_r_template.c (declare_mgen_alias_r_x): Remove
	macro.
	(declare_mgen_alias_r_s): Likewise.
	(declare_mgen_alias_r): Likewise.
	* math/w_lgamma_r_compat.c: Include <libm-alias-double.h>.
	(lgamma_r): Define using libm_alias_double_r.
	* math/w_lgammaf_r_compat.c: Include <libm-alias-float.h>.
	(lgammaf_r): Define using libm_alias_float_r.
	* math/w_lgammal_r_compat.c: Include <libm-alias-ldouble.h>.
	(lgammal_r): Define using libm_alias_ldouble_r.
	* sysdeps/ieee754/ldbl-opt/w_lgamma_r_compat.c: Remove file.
	* sysdeps/ieee754/ldbl-opt/w_lgammal_r_compat.c: Likewise.
This commit is contained in:
Joseph Myers
2017-10-09 22:04:18 +00:00
parent bedac13671
commit a8dce6197a
12 changed files with 59 additions and 34 deletions
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20
sysdeps/generic/math-type-macros.h
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@ -34,12 +34,13 @@
converts a string into the appropriate FLOAT nan
value.
Optionally, these headers may inject a non-standard
definition for the following:
declare_mgen_alias(from,to)
This exposes the appropriate symbol(s) for a
function f of type FLOAT. */
function f of type FLOAT.
declare_mgen_alias_r(from,to)
This exposes the appropriate symbol(s) for a
function f_r of type FLOAT. */
#ifndef M_PFX
# error "M_PFX must be defined."
@ -59,6 +60,12 @@
#ifndef CFLOAT
# error "CFLOAT must be defined."
#endif
#ifndef declare_mgen_alias
# error "declare_mgen_alias must be defined."
#endif
#ifndef declare_mgen_alias_r
# error "declare_mgen_alias_r must be defined."
#endif
#define __M_CONCAT(a,b) a ## b
#define __M_CONCATX(a,b) __M_CONCAT(a,b)
@ -102,9 +109,4 @@
# define M_DECL_FUNC(f) M_SUF (f)
#endif
/* If the type does not declare special aliasing, use the default. */
#ifndef declare_mgen_alias
# define declare_mgen_alias(from, to) weak_alias (M_SUF (from), M_SUF (to))
#endif
#endif /* _MATH_TYPE_MACROS */