Patchwork Support _Float64, _Float32x in libm_alias_double [committed]

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Submitter Joseph Myers
Date Dec. 5, 2017, 5:01 p.m.
Message ID <alpine.DEB.2.20.1712051700120.14928@digraph.polyomino.org.uk>
Download mbox | patch
Permalink /patch/24740/
State New
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Joseph Myers - Dec. 5, 2017, 5:01 p.m.
This patch makes the libm_alias_double macros support creating
_Float64 and _Float32x aliases, in preparation for enabling glibc
support for those types.

Tested for x86_64; also tested with build-many-glibcs.py in
conjunction with other _Float64 / _Float32x changes.  Committed.

2017-12-05  Joseph Myers  <joseph@codesourcery.com>

	* sysdeps/generic/libm-alias-double.h: Include <bits/floatn.h>.
	(libm_alias_double_other_r_f64): New macro.
	(libm_alias_double_other_r_f32x): Likewise.
	(libm_alias_double_other_r): Use libm_alias_double_other_r_f64 and
	libm_alias_double_other_r_f32x.
	(libm_alias_double_r): Use semicolon before call to
	libm_alias_double_other_r.
	* sysdeps/ieee754/ldbl-opt/libm-alias-double.h: Include
	<bits/floatn.h>.
	(libm_alias_double_other_r_f64): New macro.
	(libm_alias_double_other_r_f32x): Likewise.
	(libm_alias_double_other_r): Use libm_alias_double_other_r_f64 and
	libm_alias_double_other_r_f32x.

Patch

diff --git a/sysdeps/generic/libm-alias-double.h b/sysdeps/generic/libm-alias-double.h
index 0593ad9..f222cf8 100644
--- a/sysdeps/generic/libm-alias-double.h
+++ b/sysdeps/generic/libm-alias-double.h
@@ -19,11 +19,29 @@ 
 #ifndef _LIBM_ALIAS_DOUBLE_H
 #define _LIBM_ALIAS_DOUBLE_H
 
+#include <bits/floatn.h>
+
+#if __HAVE_FLOAT64 && !__HAVE_DISTINCT_FLOAT64
+# define libm_alias_double_other_r_f64(from, to, r)	\
+  weak_alias (from ## r, to ## f64 ## r)
+#else
+# define libm_alias_double_other_r_f64(from, to, r)
+#endif
+
+#if __HAVE_FLOAT32X && !__HAVE_DISTINCT_FLOAT32X
+# define libm_alias_double_other_r_f32x(from, to, r)	\
+  weak_alias (from ## r, to ## f32x ## r)
+#else
+# define libm_alias_double_other_r_f32x(from, to, r)
+#endif
+
 /* Define _FloatN / _FloatNx aliases for a double libm function that
    has internal name FROM ## R and public names TO ## suffix ## R for
    each suffix of a supported _FloatN / _FloatNx floating-point type
    with the same format as double.  */
-#define libm_alias_double_other_r(from, to, r)
+#define libm_alias_double_other_r(from, to, r)	\
+  libm_alias_double_other_r_f64 (from, to, r);	\
+  libm_alias_double_other_r_f32x (from, to, r)
 
 /* Likewise, but without the R suffix.  */
 #define libm_alias_double_other(from, to)	\
@@ -40,11 +58,11 @@ 
 # define libm_alias_double_r(from, to, r)	\
   weak_alias (from ## r, to ## r)		\
   strong_alias (from ## r, from ## l ## r)	\
-  weak_alias (from ## r, to ## l ## r)		\
+  weak_alias (from ## r, to ## l ## r);		\
   libm_alias_double_other_r (from, to, r)
 #else
 # define libm_alias_double_r(from, to, r)	\
-  weak_alias (from ## r, to ## r)		\
+  weak_alias (from ## r, to ## r);		\
   libm_alias_double_other_r (from, to, r)
 #endif
 
diff --git a/sysdeps/ieee754/ldbl-opt/libm-alias-double.h b/sysdeps/ieee754/ldbl-opt/libm-alias-double.h
index f98e9d5..37ef612 100644
--- a/sysdeps/ieee754/ldbl-opt/libm-alias-double.h
+++ b/sysdeps/ieee754/ldbl-opt/libm-alias-double.h
@@ -19,15 +19,32 @@ 
 #ifndef _LIBM_ALIAS_DOUBLE_H
 #define _LIBM_ALIAS_DOUBLE_H
 
+#include <bits/floatn.h>
 #include <math_ldbl_opt.h>
 #include <first-versions.h>
 #include <ldbl-compat-choose.h>
 
+#if __HAVE_FLOAT64 && !__HAVE_DISTINCT_FLOAT64
+# define libm_alias_double_other_r_f64(from, to, r)	\
+  weak_alias (from ## r, to ## f64 ## r)
+#else
+# define libm_alias_double_other_r_f64(from, to, r)
+#endif
+
+#if __HAVE_FLOAT32X && !__HAVE_DISTINCT_FLOAT32X
+# define libm_alias_double_other_r_f32x(from, to, r)	\
+  weak_alias (from ## r, to ## f32x ## r)
+#else
+# define libm_alias_double_other_r_f32x(from, to, r)
+#endif
+
 /* Define _FloatN / _FloatNx aliases for a double libm function that
    has internal name FROM ## R and public names TO ## suffix ## R for
    each suffix of a supported _FloatN / _FloatNx floating-point type
    with the same format as double.  */
-#define libm_alias_double_other_r(from, to, r)
+#define libm_alias_double_other_r(from, to, r)	\
+  libm_alias_double_other_r_f64 (from, to, r);	\
+  libm_alias_double_other_r_f32x (from, to, r)
 
 /* Likewise, but without the R suffix.  */
 #define libm_alias_double_other(from, to)	\