Support _Float64x in libm_alias macros.
This patch adds support for libm_alias_ldouble and libm_alias_float128 to create *f64x function aliases when appropriate. Making such aliases work for functions defined in assembly sources requires adding some semicolons after weak_alias calls in alias macro definitions. For C, semicolons are already present in the macros called when required, but a GNU C extension allows excess semicolons at file scope in a source file (and glibc already uses this), so it is OK to have extra semicolons present in the macro definitions. For assembly sources, making multiple alias macro calls from a single macro expansion means there are no newlines between the calls, so an explicit separator is needed. If hppa were to have .S sources in libm, a more complicated approach would be needed that used ASM_LINE_SEP when building assembly sources but not for C, but right now there are no such sources so just using a semicolon (as already present unconditionally in some such macro expansions) suffices. Tested for x86_64, including in conjunction with _Float64x support patches. * sysdeps/generic/libm-alias-float128.h: Include <bits/floatn.h>. (libm_alias_float128_other_r): If [__HAVE_FLOAT64X && !__HAVE_FLOAT64X_LONG_DOUBLE], define f64x alias. (libm_alias_float128_r): Add semicolon after weak_alias call. * sysdeps/generic/libm-alias-ldouble.h (libm_alias_ldouble_other_r_f128): New macro. (libm_alias_ldouble_other_r_f64x): Likewise. (libm_alias_ldouble_other_r): Use libm_alias_ldouble_other_r_f128 and libm_alias_ldouble_other_r_f64x. (libm_alias_ldouble_r): Add semicolon after weak_alias call. * sysdeps/ieee754/ldbl-opt/libm-alias-ldouble.h (libm_alias_ldouble_other_r_f128): New macro. (libm_alias_ldouble_other_r_f64x): Likewise. (libm_alias_ldouble_other_r): Use libm_alias_ldouble_other_r_f128 and libm_alias_ldouble_other_r_f64x.
This commit is contained in:
Joseph Myers
parent
df2806cdb5
commit
6e70d156c7
17
ChangeLog
17
ChangeLog
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@ -1,5 +1,22 @@
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2017-11-24 Joseph Myers <joseph@codesourcery.com>
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* sysdeps/generic/libm-alias-float128.h: Include <bits/floatn.h>.
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(libm_alias_float128_other_r): If
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[__HAVE_FLOAT64X && !__HAVE_FLOAT64X_LONG_DOUBLE], define f64x
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alias.
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(libm_alias_float128_r): Add semicolon after weak_alias call.
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* sysdeps/generic/libm-alias-ldouble.h
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(libm_alias_ldouble_other_r_f128): New macro.
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(libm_alias_ldouble_other_r_f64x): Likewise.
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(libm_alias_ldouble_other_r): Use libm_alias_ldouble_other_r_f128
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and libm_alias_ldouble_other_r_f64x.
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(libm_alias_ldouble_r): Add semicolon after weak_alias call.
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* sysdeps/ieee754/ldbl-opt/libm-alias-ldouble.h
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(libm_alias_ldouble_other_r_f128): New macro.
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(libm_alias_ldouble_other_r_f64x): Likewise.
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(libm_alias_ldouble_other_r): Use libm_alias_ldouble_other_r_f128
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and libm_alias_ldouble_other_r_f64x.
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* stdlib/strfroml.c: Always include <stdlib.h>.
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[__HAVE_FLOAT64X_LONG_DOUBLE] (strfromf64x): Define and later
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undefine as macro and define as weak alias.
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@ -19,12 +19,19 @@
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#ifndef _LIBM_ALIAS_FLOAT128_H
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#define _LIBM_ALIAS_FLOAT128_H
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#include <bits/floatn.h>
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/* Define _FloatN / _FloatNx aliases (other than that for _Float128)
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for a _Float128 libm function that has internal name FROM ## f128
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## R and public names TO ## suffix ## R for each suffix of a
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supported _FloatN / _FloatNx floating-point type with the same
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format as _Float128. */
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#define libm_alias_float128_other_r(from, to, r)
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#if __HAVE_FLOAT64X && !__HAVE_FLOAT64X_LONG_DOUBLE
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# define libm_alias_float128_other_r(from, to, r) \
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weak_alias (from ## f128 ## r, to ## f64x ## r)
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#else
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# define libm_alias_float128_other_r(from, to, r)
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#endif
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/* Likewise, but without the R suffix. */
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#define libm_alias_float128_other(from, to) \
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@ -39,7 +46,7 @@
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per format, not per type) or for obsolescent functions not provided
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for _FloatN types. */
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#define libm_alias_float128_r(from, to, r) \
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weak_alias (from ## f128 ## r, to ## f128 ## r) \
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weak_alias (from ## f128 ## r, to ## f128 ## r); \
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libm_alias_float128_other_r (from, to, r)
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/* Likewise, but without the R suffix. */
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@ -21,16 +21,27 @@
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#include <bits/floatn.h>
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#if __HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128
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# define libm_alias_ldouble_other_r_f128(from, to, r) \
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weak_alias (from ## l ## r, to ## f128 ## r)
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#else
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# define libm_alias_ldouble_other_r_f128(from, to, r)
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#endif
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#if __HAVE_FLOAT64X_LONG_DOUBLE
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# define libm_alias_ldouble_other_r_f64x(from, to, r) \
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weak_alias (from ## l ## r, to ## f64x ## r)
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#else
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# define libm_alias_ldouble_other_r_f64x(from, to, r)
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#endif
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/* Define _FloatN / _FloatNx aliases for a long double libm function
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that has internal name FROM ## l ## R and public names TO ## suffix
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## R for each suffix of a supported _FloatN / _FloatNx
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floating-point type with the same format as long double. */
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#if __HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128
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# define libm_alias_ldouble_other_r(from, to, r) \
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weak_alias (from ## l ## r, to ## f128 ## r)
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#else
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# define libm_alias_ldouble_other_r(from, to, r)
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#endif
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#define libm_alias_ldouble_other_r(from, to, r) \
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libm_alias_ldouble_other_r_f128 (from, to, r); \
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libm_alias_ldouble_other_r_f64x (from, to, r)
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/* Likewise, but without the R suffix. */
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#define libm_alias_ldouble_other(from, to) \
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@ -45,7 +56,7 @@
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per format, not per type) or for obsolescent functions not provided
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for _FloatN types. */
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#define libm_alias_ldouble_r(from, to, r) \
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weak_alias (from ## l ## r, to ## l ## r) \
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weak_alias (from ## l ## r, to ## l ## r); \
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libm_alias_ldouble_other_r (from, to, r)
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/* Likewise, but without the R suffix. */
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@ -23,16 +23,27 @@
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#include <math_ldbl_opt.h>
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#include <ldbl-compat-choose.h>
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#if __HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128
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# define libm_alias_ldouble_other_r_f128(from, to, r) \
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weak_alias (from ## l ## r, to ## f128 ## r)
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#else
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# define libm_alias_ldouble_other_r_f128(from, to, r)
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#endif
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#if __HAVE_FLOAT64X_LONG_DOUBLE
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# define libm_alias_ldouble_other_r_f64x(from, to, r) \
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weak_alias (from ## l ## r, to ## f64x ## r)
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#else
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# define libm_alias_ldouble_other_r_f64x(from, to, r)
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#endif
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/* Define _FloatN / _FloatNx aliases for a long double libm function
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that has internal name FROM ## l ## R and public names TO ## suffix
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## R for each suffix of a supported _FloatN / _FloatNx
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floating-point type with the same format as long double. */
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#if __HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128
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# define libm_alias_ldouble_other_r(from, to, r) \
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weak_alias (from ## l ## r, to ## f128 ## r)
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#else
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# define libm_alias_ldouble_other_r(from, to, r)
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#endif
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#define libm_alias_ldouble_other_r(from, to, r) \
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libm_alias_ldouble_other_r_f128 (from, to, r); \
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libm_alias_ldouble_other_r_f64x (from, to, r)
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/* Likewise, but without the R suffix. */
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#define libm_alias_ldouble_other(from, to) \
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