3 files changed, 36 insertions, 5 deletions
diff --git a/sysdeps/ieee754/ldbl-128/s_fabsl.c b/sysdeps/ieee754/ldbl-128/s_fabsl.c
index 7e08980252..f22515fec6 100644
--- a/sysdeps/ieee754/ldbl-128/s_fabsl.c
+++ b/sysdeps/ieee754/ldbl-128/s_fabsl.c
@@ -24,11 +24,9 @@ static char rcsid[] = "$NetBSD: $";
 #include <math_private.h>
 #include <libm-alias-ldouble.h>
 
-_Float128 __fabsl(_Float128 x)
+_Float128
+__fabsl (_Float128 x)
 {
-	uint64_t hx;
-	GET_LDOUBLE_MSW64(hx,x);
-	SET_LDOUBLE_MSW64(x,hx&0x7fffffffffffffffLL);
-        return x;
+  return __builtin_fabsf128 (x);
 }
 libm_alias_ldouble (__fabs, fabs)
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_fabsl.c b/sysdeps/ieee754/ldbl-128ibm/s_fabsl.c
index cba7de6660..7f26315e84 100644
--- a/sysdeps/ieee754/ldbl-128ibm/s_fabsl.c
+++ b/sysdeps/ieee754/ldbl-128ibm/s_fabsl.c
@@ -24,9 +24,13 @@ static char rcsid[] = "$NetBSD: $";
 #include <math.h>
 #include <math_private.h>
 #include <math_ldbl_opt.h>
+#include <math-use-builtins.h>
 
 long double __fabsl(long double x)
 {
+#if USE_FABSL_BUILTIN
+	return __builtin_fabsl (x);
+#else
 	uint64_t hx, lx;
 	double xhi, xlo;
 
@@ -39,5 +43,6 @@ long double __fabsl(long double x)
 	INSERT_WORDS64 (xlo, lx);
 	x = ldbl_pack (xhi, xlo);
 	return x;
+#endif
 }
 long_double_symbol (libm, __fabsl, fabsl);
diff --git a/sysdeps/ieee754/ldbl-96/s_fabsl.c b/sysdeps/ieee754/ldbl-96/s_fabsl.c
new file mode 100644
index 0000000000..0eceb0c997
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-96/s_fabsl.c
@@ -0,0 +1,28 @@
+/* Absolute value of floating-point number.
+   Copyright (C) 2022 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
+   <https://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <libm-alias-ldouble.h>
+#include <math-use-builtins.h>
+
+long double
+__fabsl (long double x)
+{
+  return __builtin_fabsl (x);
+}
+libm_alias_ldouble (__fabs, fabs)