diff mbox series

[2/2] fp-bench: remove wrong exponent raise in fill_random

Message ID 20181221195200.6544-3-cota@braap.org (mailing list archive)
State New, archived
Headers show
Series fp-bench fixes | expand

Commit Message

Emilio Cota Dec. 21, 2018, 7:52 p.m. UTC
At this point random_ops[] only contains normals, so there's
no need to do anything to them. In fact, raising the exponent
here can make the output !normal, which is precisely
what the comment says we want to avoid.

Signed-off-by: Emilio G. Cota <cota@braap.org>
---
 tests/fp/fp-bench.c | 4 ----
 1 file changed, 4 deletions(-)

Comments

Richard Henderson Dec. 25, 2018, 8:46 p.m. UTC | #1
On 12/22/18 6:52 AM, Emilio G. Cota wrote:
> At this point random_ops[] only contains normals, so there's
> no need to do anything to them. In fact, raising the exponent
> here can make the output !normal, which is precisely
> what the comment says we want to avoid.
> 
> Signed-off-by: Emilio G. Cota <cota@braap.org>
> ---
>  tests/fp/fp-bench.c | 4 ----
>  1 file changed, 4 deletions(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~
diff mbox series

Patch

diff --git a/tests/fp/fp-bench.c b/tests/fp/fp-bench.c
index 546bac9c9c..4ba5e1d2d4 100644
--- a/tests/fp/fp-bench.c
+++ b/tests/fp/fp-bench.c
@@ -176,8 +176,6 @@  static void fill_random(union fp *ops, int n_ops, enum precision prec,
             if (no_neg && float32_is_neg(ops[i].f32)) {
                 ops[i].f32 = float32_chs(ops[i].f32);
             }
-            /* raise the exponent to limit the frequency of denormal results */
-            ops[i].f32 |= 0x40000000;
             break;
         case PREC_DOUBLE:
         case PREC_FLOAT64:
@@ -185,8 +183,6 @@  static void fill_random(union fp *ops, int n_ops, enum precision prec,
             if (no_neg && float64_is_neg(ops[i].f64)) {
                 ops[i].f64 = float64_chs(ops[i].f64);
             }
-            /* raise the exponent to limit the frequency of denormal results */
-            ops[i].f64 |= LIT64(0x4000000000000000);
             break;
         default:
             g_assert_not_reached();