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Support _Float32 in libm_alias_float [committed]
- From: Joseph Myers <joseph at codesourcery dot com>
- To: <libc-alpha at sourceware dot org>
- Date: Wed, 6 Dec 2017 22:15:24 +0000
- Subject: Support _Float32 in libm_alias_float [committed]
- Authentication-results: sourceware.org; auth=none
This patch makes the libm_alias_float macro support creating _Float32
aliases, in preparation for enabling glibc support for that type.
Tested for x86_64; also tested with build-many-glibcs.py in
conjunction with other _Float32 changes. Committed.
2017-12-06 Joseph Myers <joseph@codesourcery.com>
* sysdeps/generic/libm-alias-float.h: Include <bits/floatn.h>.
[__HAVE_FLOAT32 && !__HAVE_DISTINCT_FLOAT32]
(libm_alias_float_other_r): Create f32 alias.
(libm_alias_float_r): Use semicolon before call to
libm_alias_float_other_r.
diff --git a/sysdeps/generic/libm-alias-float.h b/sysdeps/generic/libm-alias-float.h
index 11bd472..b4a5f73 100644
--- a/sysdeps/generic/libm-alias-float.h
+++ b/sysdeps/generic/libm-alias-float.h
@@ -19,11 +19,18 @@
#ifndef _LIBM_ALIAS_FLOAT_H
#define _LIBM_ALIAS_FLOAT_H
+#include <bits/floatn.h>
+
/* Define _FloatN / _FloatNx aliases for a float libm function that
has internal name FROM ## f ## R and public names TO ## suffix ## R
for each suffix of a supported _FloatN / _FloatNx floating-point
type with the same format as float. */
-#define libm_alias_float_other_r(from, to, r)
+#if __HAVE_FLOAT32 && !__HAVE_DISTINCT_FLOAT32
+# define libm_alias_float_other_r(from, to, r) \
+ weak_alias (from ## f ## r, to ## f32 ## r)
+#else
+# define libm_alias_float_other_r(from, to, r)
+#endif
/* Likewise, but without the R suffix. */
#define libm_alias_float_other(from, to) \
@@ -37,7 +44,7 @@
names (where there is one name per format, not per type) or for
obsolescent functions not provided for _FloatN types. */
#define libm_alias_float_r(from, to, r) \
- weak_alias (from ## f ## r, to ## f ## r) \
+ weak_alias (from ## f ## r, to ## f ## r); \
libm_alias_float_other_r (from, to, r)
/* Likewise, but without the R suffix. */
--
Joseph S. Myers
joseph@codesourcery.com