Add llogb, llogbf, llogbl.

TS 18661-1 defines llogb functions that are like ilogb except that
they return long int instead of int.  Corresponding FP_LLOGB* macros
are defined, whose values are required to have the obvious
correspondence to those of the FP_ILOGB* macros.

This patch implements these functions and macros for glibc.  llogb
uses the type-generic infrastructure, with an implementation similar
to the wrapper for ilogb but with additional conversion from FP_ILOGB*
to FP_LLOGB*; this approach avoids needing to modify or duplicate any
of the architecture-specific ilogb implementations.  Tests are also
based on those for ilogb.

Ideally the llogb functions would alias the ilogb ones when long is
32-bit, but such aliasing requires the associated header declarations
of the different-type alias to be hidden, typically by defining macros
before including the header (see e.g. how
sysdeps/ieee754/dbl-64/wordsize-64/s_llround.c defines lround to
__hidden_lround before including <math.h>).  The infrastructure for
type-generic function implementations does not support defining such
macros at present (since C code can't define a macro whose name is
determined by other macros).  So this patch leaves them as separate
functions (similar to e.g. scalbln and scalbn being separate in such a
case as well), but with the remapping of FP_ILOGB* to FP_LLOGB*
conditioned out in the case where it would be the identity map.

Tested for x86_64, x86, mips64 and powerpc.

	* math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (llogb):
	New declaration.
	* math/tgmath.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (llogb): New
	macro.
	* math/math.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (__FP_LONG_MAX):
	New macro.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FP_LLOGB0): Likewise.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FP_LLOGBNAN): Likewise.
	* math/Versions (llogb): New libm symbol at version GLIBC_2.25.
	(llogbf): Likewise.
	(llogbl): Likewise.
	* math/Makefile (gen-libm-calls): Add w_llogbF.
	(tests): Add test-fp-llogb-constants.
	* math/w_llogb_template.c: New file.  Based on
	math/w_ilogb_template.c.
	* math/libm-test.inc (llogb_test_data): New array.
	(llogb_test): New function.
	(main): Call llogb_test.
	* math/test-fp-llogb-constants.c: New file.  Based on
	math/test-fp-ilogb-constants.c.
	* math/test-tgmath-ret.c (llogb): New CHECK_RET_CONST call.
	(do_test): Call check_return_llogb.
	* math/test-tgmath.c (NCALLS): Increase to 126.
	(F(compile_test)): Call llogb.
	(F(llogb)): New function.
	* manual/math.texi (Exponents and Logarithms): Document llogb,
	llogbf, llogbl, FP_LLOGB0 and FP_LLOGBNAN.
	* manual/libm-err-tab.pl (@all_functions): Add llogb.
	* sysdeps/ieee754/ldbl-opt/nldbl-llogb.c: New file.
	* sysdeps/ieee754/ldbl-opt/w_llogbl.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add llogb.
	(CFLAGS-nldbl-llogb.c): New variable.
	* sysdeps/nacl/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.

30 files changed, 114 insertions, 1 deletions

diff --git a/sysdeps/ieee754/ldbl-opt/Makefile b/sysdeps/ieee754/ldbl-opt/Makefile
index 9d45684ffb..ba13515c3e 100644
--- a/sysdeps/ieee754/ldbl-opt/Makefile
+++ b/sysdeps/ieee754/ldbl-opt/Makefile
@@ -43,7 +43,7 @@ libnldbl-calls = asprintf dprintf fprintf fscanf fwprintf fwscanf iovfscanf \
 		 isoc99_wscanf isoc99_fwscanf isoc99_swscanf \
 		 isoc99_vwscanf isoc99_vfwscanf isoc99_vswscanf \
 		 nextup nextdown totalorder totalordermag getpayload \
-		 canonicalize setpayload setpayloadsig
+		 canonicalize setpayload setpayloadsig llogb
 libnldbl-routines = $(libnldbl-calls:%=nldbl-%)
 libnldbl-inhibit-o = $(object-suffixes)
 libnldbl-static-only-routines = $(libnldbl-routines)
@@ -112,6 +112,7 @@ CFLAGS-nldbl-jn.c = -fno-builtin-jnl
 CFLAGS-nldbl-ldexp.c = -fno-builtin-ldexpl
 CFLAGS-nldbl-lgamma.c = -fno-builtin-lgammal
 CFLAGS-nldbl-lgamma_r.c = -fno-builtin-lgammal_r
+CFLAGS-nldbl-llogb.c = -fno-builtin-llogbl
 CFLAGS-nldbl-llrint.c = -fno-builtin-llrintl
 CFLAGS-nldbl-llround.c = -fno-builtin-llroundl
 CFLAGS-nldbl-log.c = -fno-builtin-logl
diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-llogb.c b/sysdeps/ieee754/ldbl-opt/nldbl-llogb.c
new file mode 100644
index 0000000000..2f241ddc58
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/nldbl-llogb.c
@@ -0,0 +1,26 @@
+/* Compatibility routine for IEEE double as long double for llogb.
+   Copyright (C) 2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "nldbl-compat.h"
+
+long int
+attribute_hidden
+llogbl (double x)
+{
+  return llogb (x);
+}
diff --git a/sysdeps/ieee754/ldbl-opt/w_llogbl.c b/sysdeps/ieee754/ldbl-opt/w_llogbl.c
new file mode 100644
index 0000000000..8abe54bc85
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/w_llogbl.c
@@ -0,0 +1,5 @@
+/* llogbl is not subject to complex aliasing rules.  It was added in
+   glibc 2.25.  */
+#define declare_mgen_alias(from, to) weak_alias (M_SUF (from), M_SUF (to))
+#include <math-type-macros-ldouble.h>
+#include <w_llogb_template.c>
diff --git a/sysdeps/nacl/libm.abilist b/sysdeps/nacl/libm.abilist
index 7a256f8910..0c0e352c79 100644
--- a/sysdeps/nacl/libm.abilist
+++ b/sysdeps/nacl/libm.abilist
@@ -392,6 +392,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/aarch64/libm.abilist b/sysdeps/unix/sysv/linux/aarch64/libm.abilist
index 689bd0a80d..b8ab6fcdd0 100644
--- a/sysdeps/unix/sysv/linux/aarch64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libm.abilist
@@ -424,6 +424,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/alpha/libm.abilist b/sysdeps/unix/sysv/linux/alpha/libm.abilist
index 9f4b50df12..604c996e78 100644
--- a/sysdeps/unix/sysv/linux/alpha/libm.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libm.abilist
@@ -434,6 +434,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/arm/libm.abilist b/sysdeps/unix/sysv/linux/arm/libm.abilist
index 8d0905db1b..618cb6fce1 100644
--- a/sysdeps/unix/sysv/linux/arm/libm.abilist
+++ b/sysdeps/unix/sysv/linux/arm/libm.abilist
@@ -81,6 +81,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/hppa/libm.abilist b/sysdeps/unix/sysv/linux/hppa/libm.abilist
index edf87c30f8..33314ad754 100644
--- a/sysdeps/unix/sysv/linux/hppa/libm.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libm.abilist
@@ -393,6 +393,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/i386/libm.abilist b/sysdeps/unix/sysv/linux/i386/libm.abilist
index a139f50b87..4530ad538a 100644
--- a/sysdeps/unix/sysv/linux/i386/libm.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libm.abilist
@@ -437,6 +437,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/ia64/libm.abilist b/sysdeps/unix/sysv/linux/ia64/libm.abilist
index 166e0a94bb..9b94be0492 100644
--- a/sysdeps/unix/sysv/linux/ia64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/ia64/libm.abilist
@@ -366,6 +366,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist
index 8d0905db1b..618cb6fce1 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist
@@ -81,6 +81,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist
index f64023783e..6d61d704a1 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist
@@ -435,6 +435,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/microblaze/libm.abilist b/sysdeps/unix/sysv/linux/microblaze/libm.abilist
index d4c8749e1b..b55f6aaf86 100644
--- a/sysdeps/unix/sysv/linux/microblaze/libm.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/libm.abilist
@@ -392,6 +392,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/libm.abilist b/sysdeps/unix/sysv/linux/mips/mips32/libm.abilist
index 53f995161a..5ebba1172c 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/libm.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/libm.abilist
@@ -394,6 +394,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/libm.abilist b/sysdeps/unix/sysv/linux/mips/mips64/libm.abilist
index 6fa6b46f82..cf28ab6961 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/libm.abilist
@@ -426,6 +426,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/nios2/libm.abilist b/sysdeps/unix/sysv/linux/nios2/libm.abilist
index fd0839bb63..9d9fd05a5a 100644
--- a/sysdeps/unix/sysv/linux/nios2/libm.abilist
+++ b/sysdeps/unix/sysv/linux/nios2/libm.abilist
@@ -392,6 +392,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist
index a85c72fcef..2747628a52 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist
@@ -437,6 +437,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist
index b9e01662bc..26c115854a 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist
@@ -436,6 +436,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist
index 615cbbc7c1..5f992b2df0 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist
@@ -431,6 +431,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist
index e5e30469c1..b4de7f182f 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist
@@ -112,6 +112,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist
index a523788800..67740c2c84 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist
@@ -424,6 +424,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist
index 2872dc3aa5..6fa99f01cf 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist
@@ -422,6 +422,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/sh/libm.abilist b/sysdeps/unix/sysv/linux/sh/libm.abilist
index 73f7ad905f..2c093afb63 100644
--- a/sysdeps/unix/sysv/linux/sh/libm.abilist
+++ b/sysdeps/unix/sysv/linux/sh/libm.abilist
@@ -393,6 +393,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist
index 3f5186e145..515a6774eb 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist
@@ -427,6 +427,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist
index e1683dfdc0..1590b05966 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist
@@ -425,6 +425,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist
index 9e7008240e..3ed0c68120 100644
--- a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist
+++ b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist
@@ -393,6 +393,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist
index 9e7008240e..3ed0c68120 100644
--- a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist
@@ -393,6 +393,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist b/sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist
index 9e7008240e..3ed0c68120 100644
--- a/sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist
+++ b/sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist
@@ -393,6 +393,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libm.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libm.abilist
index 4b548a0856..908d6ffd39 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/libm.abilist
@@ -426,6 +426,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist
index 384a570623..cf5b5765fe 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist
@@ -425,6 +425,9 @@ GLIBC_2.25 fetestexceptflag F
 GLIBC_2.25 getpayload F
 GLIBC_2.25 getpayloadf F
 GLIBC_2.25 getpayloadl F
+GLIBC_2.25 llogb F
+GLIBC_2.25 llogbf F
+GLIBC_2.25 llogbl F
 GLIBC_2.25 setpayload F
 GLIBC_2.25 setpayloadf F
 GLIBC_2.25 setpayloadl F