tests/fp: Explicitly set inf-zero-nan rule

Explicitly set a rule in the softfloat tests for the inf-zero-nan
muladd special case.  In meson.build we put -DTARGET_ARM in fpcflags,
and so we should select here the Arm rule of
float_infzeronan_dnan_if_qnan.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20241202131347.498124-5-peter.maydell@linaro.org

1 files changed, 5 insertions, 0 deletions

diff --git a/tests/fp/fp-bench.c b/tests/fp/fp-bench.c
index 75c07d5d1f..fde6483619 100644
--- a/tests/fp/fp-bench.c
+++ b/tests/fp/fp-bench.c
@@ -488,7 +488,12 @@ static void run_bench(void)
 {
     bench_func_t f;
 
+    /*
+     * These implementation-defined choices for various things IEEE
+     * doesn't specify match those used by the Arm architecture.
+     */
     set_float_2nan_prop_rule(float_2nan_prop_s_ab, &soft_status);
+    set_float_infzeronan_rule(float_infzeronan_dnan_if_qnan, &soft_status);
 
     f = bench_funcs[operation][precision];
     g_assert(f);