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authorWilco Dijkstra <Wilco.Dijkstra@arm.com>2019-07-16 12:17:22 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2020-01-03 10:02:04 -0300
commit220622dde5704c95a100c2792a280f18f3deba73 (patch)
treefbf0df37c2671a9bc21a200bd2f587fc5e4cbe2b /sysdeps/generic
parentcf4dfd461725b6dbe6f27fbd16913f2c6c5cf7c5 (diff)
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Add libm_alias_finite for _finite symbols
This patch adds a new macro, libm_alias_finite, to define all _finite
symbol.  It sets all _finite symbol as compat symbol based on its first
version (obtained from the definition at built generated first-versions.h).

The <fn>f128_finite symbols were introduced in GLIBC 2.26 and so need
special treatment in code that is shared between long double and float128.
It is done by adding a list, similar to internal symbol redifinition,
on sysdeps/ieee754/float128/float128_private.h.

Alpha also needs some tricky changes to ensure we still emit 2 compat
symbols for sqrt(f).

Passes buildmanyglibc.

Co-authored-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Diffstat (limited to 'sysdeps/generic')
-rw-r--r--sysdeps/generic/math-type-macros.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/sysdeps/generic/math-type-macros.h b/sysdeps/generic/math-type-macros.h
index 08d8125fc6..0309dd29e1 100644
--- a/sysdeps/generic/math-type-macros.h
+++ b/sysdeps/generic/math-type-macros.h
@@ -75,8 +75,8 @@
 #endif
 
 #ifndef declare_mgen_finite_alias_x
-#define declare_mgen_finite_alias_x(from, to)	\
-  strong_alias (from, to ## _finite)
+#define declare_mgen_finite_alias_x(from, to)   \
+  libm_alias_finite (from, to)
 #endif
 
 #ifndef declare_mgen_finite_alias_s
@@ -117,6 +117,7 @@
 
 /* Needed to evaluate M_MANT_DIG below.  */
 #include <float.h>
+#include <libm-alias-finite.h>
 
 /* Use a special epsilon value for IBM long double
    to avoid spurious overflows/underflows.  */