Remove the error handling wrapper from exp and exp2

Introduce new exp and exp2 symbol version that don't do SVID compatible
error handling.  The standard errno and fp exception based error handling
is inline in the new code and does not have significant overhead.

The double precision wrappers are disabled for sysdeps/ieee754/dbl-64
by using empty w_exp.c and w_exp2.c files, the math/w_exp.c and
math/w_exp2.c files use the wrapper template and can be included by
targets that have their own exp and exp2 implementations or use ifunc
on the glibc internal __ieee754_exp symbol.

The compatibility symbol versions still use the wrapper with SVID error
handling around the new code.  There is no new symbol version nor
compatibility code on !LIBM_SVID_COMPAT targets (e.g. riscv).

On targets where previously expl and exp2l were aliases of exp and exp2,
now they point to the compatibility symbols with the wrapper, because
they still need the SVID compatible error handling.  This affects
NO_LONG_DOUBLE (e.g arm) and LONG_DOUBLE_COMPAT (e.g. alpha) targets
as well.

The _finite symbols are now aliases of the standard symbols (they have
no performance advantage anymore).  Both the standard symbols and
_finite symbols set errno and thus not const functions.

The ia64 asm is changed so the compat and new symbol versions map to the
same address.

On x86_64 #include <math.h> was added before macro definitions that may
affect that header (the new macro name is __exp instead of __ieee754_exp
which breaks some math.h macros).

Tested with build-many-glibcs.py.

	* math/Versions (GLIBC_2.29): Add exp and exp2.
	* math/w_exp2_compat.c (__exp2_compat): Change to versioned compat
	symbol, handle NO_LONG_DOUBLE and LONG_DOUBLE_COMPAT explicitly.
	* math/w_exp_compat.c (__exp_compat): Likewise.
	* math/w_exp.c: New file.
	* math/w_exp2.c: New file.
	* sysdeps/i386/fpu/w_exp.c: New file.
	* sysdeps/i386/fpu/w_exp2.c: New file.
	* sysdeps/ia64/fpu/e_exp.S: Add versioned symbols.
	* sysdeps/ia64/fpu/e_exp2.S: Likewise.
	* sysdeps/ieee754/dbl-64/e_exp.c (__ieee754_exp): Rename to __exp
	and add necessary aliases.
	* sysdeps/ieee754/dbl-64/e_exp2.c (__ieee754_exp2): Rename to __exp2
	and add necessary aliases.
	* sysdeps/ieee754/dbl-64/w_exp.c: New file.
	* sysdeps/ieee754/dbl-64/w_exp2.c: New file.
	* sysdeps/m68k/m680x0/fpu/w_exp.c: New file.
	* sysdeps/m68k/m680x0/fpu/w_exp2.c: New file.
	* sysdeps/mach/hurd/i386/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Update.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Update.
	* sysdeps/x86_64/fpu/multiarch/e_exp-avx.c (__exp1): Remove.
	(__ieee754_exp): Rename to __exp.
	* sysdeps/x86_64/fpu/multiarch/e_exp-fma.c (__exp1): Remove.
	(__ieee754_exp): Rename to __exp.
	* sysdeps/x86_64/fpu/multiarch/e_exp-fma4.c (__exp1): Remove.
	(__ieee754_exp): Rename to __exp.
	* sysdeps/x86_64/fpu/multiarch/e_exp.c (__ieee754_exp): Rename to
	__exp.
	* sysdeps/x86_64/fpu/multiarch/w_exp.c: New file.

ChangeLog

@@ -1,3 +1,57 @@
+2018-11-21  Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
+	* math/Versions (GLIBC_2.29): Add exp and exp2.
+	* math/w_exp2_compat.c (__exp2_compat): Change to versioned compat
+	symbol, handle NO_LONG_DOUBLE and LONG_DOUBLE_COMPAT explicitly.
+	* math/w_exp_compat.c (__exp_compat): Likewise.
+	* math/w_exp.c: New file.
+	* math/w_exp2.c: New file.
+	* sysdeps/i386/fpu/w_exp.c: New file.
+	* sysdeps/i386/fpu/w_exp2.c: New file.
+	* sysdeps/ia64/fpu/e_exp.S: Add versioned symbols.
+	* sysdeps/ia64/fpu/e_exp2.S: Likewise.
+	* sysdeps/ieee754/dbl-64/e_exp.c (__ieee754_exp): Rename to __exp
+	and add necessary aliases.
+	* sysdeps/ieee754/dbl-64/e_exp2.c (__ieee754_exp2): Rename to __exp2
+	and add necessary aliases.
+	* sysdeps/ieee754/dbl-64/w_exp.c: New file.
+	* sysdeps/ieee754/dbl-64/w_exp2.c: New file.
+	* sysdeps/m68k/m680x0/fpu/w_exp.c: New file.
+	* sysdeps/m68k/m680x0/fpu/w_exp2.c: New file.
+	* sysdeps/mach/hurd/i386/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/arm/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/i386/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Update.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/sh/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Update.
+	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Update.
+	* sysdeps/x86_64/fpu/multiarch/e_exp-avx.c (__exp1): Remove.
+	(__ieee754_exp): Rename to __exp.
+	* sysdeps/x86_64/fpu/multiarch/e_exp-fma.c (__exp1): Remove.
+	(__ieee754_exp): Rename to __exp.
+	* sysdeps/x86_64/fpu/multiarch/e_exp-fma4.c (__exp1): Remove.
+	(__ieee754_exp): Rename to __exp.
+	* sysdeps/x86_64/fpu/multiarch/e_exp.c (__ieee754_exp): Rename to
+	__exp.
+	* sysdeps/x86_64/fpu/multiarch/w_exp.c: New file.
+
 2018-11-20  DJ Delorie  <dj@redhat.com>
 
 	* malloc/malloc.c (tcache_entry): Add key field.

math/Versions

@@ -575,4 +575,8 @@ libm {
     f32xsubf64x; f32xsubf128; f64subf64x; f64subf128;
     f64xsubf128;
   }
+  GLIBC_2.29 {
+    # No SVID compatible error handling.
+    exp; exp2;
+  }
 }

math/w_exp.c

@@ -0,0 +1,8 @@
+#include <math-type-macros-double.h>
+#undef __USE_WRAPPER_TEMPLATE
+#define __USE_WRAPPER_TEMPLATE 1
+#undef declare_mgen_alias
+#define declare_mgen_alias(a, b)
+#include <w_exp_template.c>
+versioned_symbol (libm, __exp, exp, GLIBC_2_29);
+libm_alias_double_other (__exp, exp)

math/w_exp2.c

@@ -0,0 +1,8 @@
+#include <math-type-macros-double.h>
+#undef __USE_WRAPPER_TEMPLATE
+#define __USE_WRAPPER_TEMPLATE 1
+#undef declare_mgen_alias
+#define declare_mgen_alias(a, b)
+#include <w_exp2_template.c>
+versioned_symbol (libm, __exp2, exp2, GLIBC_2_29);
+libm_alias_double_other (__exp2, exp2)

math/w_exp2_compat.c

@@ -7,9 +7,11 @@
 #include <math-svid-compat.h>
 #include <libm-alias-double.h>
 
-#if LIBM_SVID_COMPAT
+#if LIBM_SVID_COMPAT && (SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_29) \
+			 || defined NO_LONG_DOUBLE \
+			 || defined LONG_DOUBLE_COMPAT)
 double
-__exp2 (double x)
+__exp2_compat (double x)
 {
   double z = __ieee754_exp2 (x);
   if (__builtin_expect (!isfinite (z) || z == 0, 0)
@@ -19,5 +21,17 @@ __exp2 (double x)
 
   return z;
 }
-libm_alias_double (__exp2, exp2)
+# if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_29)
+compat_symbol (libm, __exp2_compat, exp2, GLIBC_2_1);
+# endif
+# ifdef NO_LONG_DOUBLE
+weak_alias (__exp2_compat, exp2l)
+# endif
+# ifdef LONG_DOUBLE_COMPAT
+/* Work around gas bug "multiple versions for symbol".  */
+weak_alias (__exp2_compat, __exp2_compat_alias)
+
+LONG_DOUBLE_COMPAT_CHOOSE_libm_exp2l (
+  compat_symbol (libm, __exp2_compat_alias, exp2l, FIRST_VERSION_libm_exp2l), );
+# endif
 #endif

math/w_exp_compat.c

@@ -21,10 +21,12 @@
 #include <math-svid-compat.h>
 #include <libm-alias-double.h>
 
-#if LIBM_SVID_COMPAT
+#if LIBM_SVID_COMPAT && (SHLIB_COMPAT (libm, GLIBC_2_0, GLIBC_2_29) \
+			 || defined NO_LONG_DOUBLE \
+			 || defined LONG_DOUBLE_COMPAT)
 /* wrapper exp */
 double
-__exp (double x)
+__exp_compat (double x)
 {
   double z = __ieee754_exp (x);
   if (__builtin_expect (!isfinite (z) || z == 0, 0)
@@ -33,6 +35,17 @@ __exp (double x)
 
   return z;
 }
-libm_hidden_def (__exp)
+# if SHLIB_COMPAT (libm, GLIBC_2_0, GLIBC_2_29)
-libm_alias_double (__exp, exp)
+compat_symbol (libm, __exp_compat, exp, GLIBC_2_0);
+# endif
+# ifdef NO_LONG_DOUBLE
+weak_alias (__exp_compat, expl)
+# endif
+# ifdef LONG_DOUBLE_COMPAT
+/* Work around gas bug "multiple versions for symbol".  */
+weak_alias (__exp_compat, __exp_compat_alias)
+
+LONG_DOUBLE_COMPAT_CHOOSE_libm_expl (
+  compat_symbol (libm, __exp_compat_alias, expl, FIRST_VERSION_libm_expl), );
+# endif
 #endif

sysdeps/i386/fpu/w_exp.c

@@ -0,0 +1 @@
+#include <sysdeps/../math/w_exp.c>

sysdeps/i386/fpu/w_exp2.c

@@ -0,0 +1 @@
+#include <sysdeps/../math/w_exp2.c>

sysdeps/ia64/fpu/e_exp.S

@@ -739,6 +739,12 @@ EXP_UNDERFLOW_ZERO:
 
 GLOBAL_IEEE754_END(exp)
 libm_alias_double_other (__exp, exp)
+#ifdef SHARED
+.symver exp,exp@@GLIBC_2.29
+.weak __exp_compat
+.set __exp_compat,__exp
+.symver __exp_compat,exp@GLIBC_2.2
+#endif
 
 
 LOCAL_LIBM_ENTRY(__libm_error_region)

sysdeps/ia64/fpu/e_exp2.S

@@ -227,7 +227,7 @@ LOCAL_OBJECT_END(T_table)
 
 
 .section .text
-GLOBAL_LIBM_ENTRY(exp2)
+WEAK_LIBM_ENTRY(exp2)
 
 
 {.mfi
@@ -493,8 +493,14 @@ OUT_RANGE_exp2:
 }
 ;;
 
-GLOBAL_LIBM_END(exp2)
+WEAK_LIBM_END(exp2)
-libm_alias_double_other (exp2, exp2)
+libm_alias_double_other (__exp2, exp2)
+#ifdef SHARED
+.symver exp2,exp2@@GLIBC_2.29
+.weak __exp2_compat
+.set __exp2_compat,__exp2
+.symver __exp2_compat,exp2@GLIBC_2.2
+#endif
 
 
 LOCAL_LIBM_ENTRY(__libm_error_region)

sysdeps/ieee754/dbl-64/e_exp.c

@@ -20,6 +20,9 @@
 #include <stdint.h>
 #include <math-barriers.h>
 #include <math-narrow-eval.h>
+#include <math-svid-compat.h>
+#include <shlib-compat.h>
+#include <libm-alias-double.h>
 #include "math_config.h"
 
 #define N (1 << EXP_TABLE_BITS)
@@ -91,7 +94,7 @@ top12 (double x)
 
 double
 SECTION
-__ieee754_exp (double x)
+__exp (double x)
 {
   uint32_t abstop;
   uint64_t ki, idx, top, sbits;
@@ -153,6 +156,14 @@ __ieee754_exp (double x)
      is no spurious underflow here even without fma.  */
   return scale + scale * tmp;
 }
-#ifndef __ieee754_exp
+#ifndef __exp
-strong_alias (__ieee754_exp, __exp_finite)
+hidden_def (__exp)
+strong_alias (__exp, __ieee754_exp)
+strong_alias (__exp, __exp_finite)
+# if LIBM_SVID_COMPAT
+versioned_symbol (libm, __exp, exp, GLIBC_2_29);
+libm_alias_double_other (__exp, exp)
+# else
+libm_alias_double (__exp, exp)
+# endif
 #endif

sysdeps/ieee754/dbl-64/e_exp2.c

@@ -20,6 +20,9 @@
 #include <stdint.h>
 #include <math-barriers.h>
 #include <math-narrow-eval.h>
+#include <math-svid-compat.h>
+#include <shlib-compat.h>
+#include <libm-alias-double.h>
 #include "math_config.h"
 
 #define N (1 << EXP_TABLE_BITS)
@@ -84,7 +87,7 @@ top12 (double x)
 }
 
 double
-__ieee754_exp2 (double x)
+__exp2 (double x)
 {
   uint32_t abstop;
   uint64_t ki, idx, top, sbits;
@@ -140,6 +143,13 @@ __ieee754_exp2 (double x)
      is no spurious underflow here even without fma.  */
   return scale + scale * tmp;
 }
-#ifndef __ieee754_exp2
+#ifndef __exp2
-strong_alias (__ieee754_exp2, __exp2_finite)
+strong_alias (__exp2, __ieee754_exp2)
+strong_alias (__exp2, __exp2_finite)
+# if LIBM_SVID_COMPAT
+versioned_symbol (libm, __exp2, exp2, GLIBC_2_29);
+libm_alias_double_other (__exp2, exp2)
+# else
+libm_alias_double (__exp2, exp2)
+# endif
 #endif

sysdeps/ieee754/dbl-64/w_exp.c

@@ -0,0 +1 @@
+/* Not needed.  */

sysdeps/ieee754/dbl-64/w_exp2.c

@@ -0,0 +1 @@
+/* Not needed.  */

sysdeps/m68k/m680x0/fpu/w_exp.c

@@ -0,0 +1 @@
+#include <sysdeps/../math/w_exp.c>

sysdeps/m68k/m680x0/fpu/w_exp2.c

@@ -0,0 +1 @@
+#include <sysdeps/../math/w_exp2.c>

sysdeps/mach/hurd/i386/libm.abilist

@@ -1068,3 +1068,5 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F

sysdeps/unix/sysv/linux/aarch64/libm.abilist

@@ -1032,3 +1032,5 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F

sysdeps/unix/sysv/linux/alpha/libm.abilist

@@ -1043,6 +1043,8 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F
 GLIBC_2.3.4 __c1_cabsf F
 GLIBC_2.3.4 __c1_cacosf F
 GLIBC_2.3.4 __c1_cacoshf F

sysdeps/unix/sysv/linux/arm/libm.abilist

@@ -453,6 +453,8 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F
 GLIBC_2.4 _LIB_VERSION D 0x4
 GLIBC_2.4 __clog10 F
 GLIBC_2.4 __clog10f F

sysdeps/unix/sysv/linux/hppa/libm.abilist

@@ -764,4 +764,6 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F
 GLIBC_2.4 exp2l F

sysdeps/unix/sysv/linux/i386/libm.abilist

@@ -1075,3 +1075,5 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F

sysdeps/unix/sysv/linux/ia64/libm.abilist

@@ -1005,3 +1005,5 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F

sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist

@@ -453,6 +453,8 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F
 GLIBC_2.4 _LIB_VERSION D 0x4
 GLIBC_2.4 __clog10 F
 GLIBC_2.4 __clog10f F

sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist

@@ -804,3 +804,5 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F

sysdeps/unix/sysv/linux/microblaze/libm.abilist

@@ -765,3 +765,5 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F

sysdeps/unix/sysv/linux/mips/mips32/libm.abilist

@@ -764,4 +764,6 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F
 GLIBC_2.4 exp2l F

sysdeps/unix/sysv/linux/mips/mips64/libm.abilist

@@ -1032,3 +1032,5 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F

sysdeps/unix/sysv/linux/nios2/libm.abilist

@@ -765,3 +765,5 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F

sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist

@@ -810,6 +810,8 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F
 GLIBC_2.4 __clog10l F
 GLIBC_2.4 __finitel F
 GLIBC_2.4 __fpclassifyl F

sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist

@@ -809,6 +809,8 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F
 GLIBC_2.4 __clog10l F
 GLIBC_2.4 __finitel F
 GLIBC_2.4 __fpclassifyl F

sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist

@@ -1076,3 +1076,5 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F

sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist

@@ -488,6 +488,8 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F
 GLIBC_2.3 _LIB_VERSION D 0x4
 GLIBC_2.3 __clog10 F
 GLIBC_2.3 __clog10f F

sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist

@@ -1033,6 +1033,8 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F
 GLIBC_2.4 __clog10l F
 GLIBC_2.4 __finitel F
 GLIBC_2.4 __fpclassifyl F

sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist

@@ -1033,6 +1033,8 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F
 GLIBC_2.4 __clog10l F
 GLIBC_2.4 __finitel F
 GLIBC_2.4 __fpclassifyl F

sysdeps/unix/sysv/linux/sh/libm.abilist

@@ -764,4 +764,6 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F
 GLIBC_2.4 exp2l F

sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist

@@ -1040,6 +1040,8 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F
 GLIBC_2.4 __clog10l F
 GLIBC_2.4 __finitel F
 GLIBC_2.4 __fpclassifyl F

sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist

@@ -1032,3 +1032,5 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F

sysdeps/unix/sysv/linux/x86_64/64/libm.abilist

@@ -1066,3 +1066,5 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F

sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist

@@ -1066,3 +1066,5 @@ GLIBC_2.28 fmul F
 GLIBC_2.28 fmull F
 GLIBC_2.28 fsub F
 GLIBC_2.28 fsubl F
+GLIBC_2.29 exp F
+GLIBC_2.29 exp2 F

sysdeps/x86_64/fpu/multiarch/e_exp-avx.c

@@ -1,5 +1,5 @@
-#define __ieee754_exp __ieee754_exp_avx
+#include <math.h>
-#define __exp1 __exp1_avx
+#define __exp __ieee754_exp_avx
 #define SECTION __attribute__ ((section (".text.avx")))
 
 #include <sysdeps/ieee754/dbl-64/e_exp.c>

sysdeps/x86_64/fpu/multiarch/e_exp-fma.c

@@ -1,5 +1,5 @@
-#define __ieee754_exp __ieee754_exp_fma
+#include <math.h>
-#define __exp1 __exp1_fma
+#define __exp __ieee754_exp_fma
 #define SECTION __attribute__ ((section (".text.fma")))
 
 #include <sysdeps/ieee754/dbl-64/e_exp.c>

sysdeps/x86_64/fpu/multiarch/e_exp-fma4.c

@@ -1,5 +1,5 @@
-#define __ieee754_exp __ieee754_exp_fma4
+#include <math.h>
-#define __exp1 __exp1_fma4
+#define __exp __ieee754_exp_fma4
 #define SECTION __attribute__ ((section (".text.fma4")))
 
 #include <sysdeps/ieee754/dbl-64/e_exp.c>

sysdeps/x86_64/fpu/multiarch/e_exp.c

@@ -16,6 +16,8 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#include <math.h>
+
 extern double __redirect_ieee754_exp (double);
 
 #define SYMBOL_NAME ieee754_exp
@@ -25,5 +27,5 @@ libc_ifunc_redirected (__redirect_ieee754_exp, __ieee754_exp,
 		       IFUNC_SELECTOR ());
 strong_alias (__ieee754_exp, __exp_finite)
 
-#define __ieee754_exp __ieee754_exp_sse2
+#define __exp __ieee754_exp_sse2
 #include <sysdeps/ieee754/dbl-64/e_exp.c>

sysdeps/x86_64/fpu/multiarch/w_exp.c

@@ -0,0 +1 @@
+#include <sysdeps/../math/w_exp.c>