[PATCH v2] benchtests: Run _Float128 tests only on architectures that support it

[Arjun Shankar]

From: Arjun Shankar <arjun@redhat.com>

__float128 is a non-standard name and is not available on some architectures
(like aarch64 or s390x) even though they may support the standard _Float128
type.  Other architectures (like armv7) don't support quad-precision
floating-point operations at all.

This commit replaces benchtests references to __float128 with _Float128 and
runs the corresponding tests only on architectures that support it.
---
 Thanks for looking at v1, Florian, Joseph and Paul.

 v2 changes: dropped configure[.ac] changes; used the float128[-alias]-fcts
 variables instead.

 Tested on armv7hl, i686, x86_64, aarch64, ppc64le, and s390x.

 benchtests/Makefile       | 6 +++++-
 benchtests/expf128-inputs | 4 ++--
 benchtests/powf128-inputs | 4 ++--
 benchtests/sinf128-inputs | 4 ++--
 4 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/benchtests/Makefile b/benchtests/Makefile
index 3095076055..922e2a94b1 100644
--- a/benchtests/Makefile
+++ b/benchtests/Makefile
@@ -25,7 +25,11 @@ bench-math := acos acosh asin asinh atan atanh cos cosh exp exp2 log log2 \
 	      modf pow rint sin sincos sinh sqrt tan tanh fmin fmax fminf \
 	      fmaxf powf trunc truncf roundeven roundevenf expf exp2f logf \
 	      log2f sincosf sinf cosf isnan isinf isfinite hypot logb logbf \
-	      exp10f expf128 powf128 sinf128
+	      exp10f
+
+ifneq (,$(filter yes,$(float128-fcts) $(float128-alias-fcts)))
+bench-math += expf128 powf128 sinf128
+endif
 
 bench-pthread := pthread_once thread_create
 
diff --git a/benchtests/expf128-inputs b/benchtests/expf128-inputs
index 5b36f8672a..5dc0f4e49b 100644
--- a/benchtests/expf128-inputs
+++ b/benchtests/expf128-inputs
@@ -1,6 +1,6 @@
 ## includes: math.h
-## args: __float128
-## ret: __float128
+## args: _Float128
+## ret: _Float128
 # Random inputs in [-10,10]
 ## name: workload-random.wrf
 0x4.e6f9d6da10d9a422942a89cdfa1p+0L
diff --git a/benchtests/powf128-inputs b/benchtests/powf128-inputs
index 7cbabafff6..6826266ad5 100644
--- a/benchtests/powf128-inputs
+++ b/benchtests/powf128-inputs
@@ -1,6 +1,6 @@
 ## includes: math.h
-## args: __float128:__float128
-## ret: __float128
+## args: _Float128:_Float128
+## ret: _Float128
 # Random inputs in [-10,10] such that x and y are not both negative
 ## name: workload-random.wrf
 0x8.130b31ed5288656428a29cead83p+0L, -0x6.e7ead09b7877a118813b50cfb3c8p+0L
diff --git a/benchtests/sinf128-inputs b/benchtests/sinf128-inputs
index 9aaf312413..01b7533680 100644
--- a/benchtests/sinf128-inputs
+++ b/benchtests/sinf128-inputs
@@ -1,6 +1,6 @@
 ## includes: math.h
-## args: __float128
-## ret: __float128
+## args: _Float128
+## ret: _Float128
 # Random inputs in [-10,10]
 ## name: workload-random.wrf
 0x4.e6f9d6da10d9a422942a89cdfa1p+0
-- 
2.26.2