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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/x86_64/fpu/multiarch/e_exp2f.c
parentcf4dfd461725b6dbe6f27fbd16913f2c6c5cf7c5 (diff)
downloadglibc-220622dde5704c95a100c2792a280f18f3deba73.tar.gz
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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/x86_64/fpu/multiarch/e_exp2f.c')
-rw-r--r--sysdeps/x86_64/fpu/multiarch/e_exp2f.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/sysdeps/x86_64/fpu/multiarch/e_exp2f.c b/sysdeps/x86_64/fpu/multiarch/e_exp2f.c
index 3a90f5cd2d..ea4ae72318 100644
--- a/sysdeps/x86_64/fpu/multiarch/e_exp2f.c
+++ b/sysdeps/x86_64/fpu/multiarch/e_exp2f.c
@@ -17,6 +17,7 @@
    <https://www.gnu.org/licenses/>.  */
 
 #include <libm-alias-float.h>
+#include <libm-alias-finite.h>
 
 extern float __redirect_exp2f (float);
 
@@ -26,15 +27,14 @@ extern float __redirect_exp2f (float);
 libc_ifunc_redirected (__redirect_exp2f, __exp2f, IFUNC_SELECTOR ());
 
 #ifdef SHARED
-# include <shlib-compat.h>
-versioned_symbol (libm, __exp2f, exp2f, GLIBC_2_27);
+versioned_symbol (libm, __ieee754_exp2f, exp2f, GLIBC_2_27);
 libm_alias_float_other (__exp2, exp2)
 #else
 libm_alias_float (__exp2, exp2)
 #endif
 
 strong_alias (__exp2f, __ieee754_exp2f)
-strong_alias (__exp2f, __exp2f_finite)
+libm_alias_finite (__exp2f, __exp2f)
 
 #define __exp2f __exp2f_sse2
 #include <sysdeps/ieee754/flt-32/e_exp2f.c>