[glibc] math: Fix log10f on some ABIs

[glibc] math: Fix log10f on some ABIs

[Adhemerval Zanella]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=12b8dd77182420917a8efdaca03a5e3d77a127f5

commit 12b8dd77182420917a8efdaca03a5e3d77a127f5
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Thu Nov 7 07:51:27 2024 -0300

    math: Fix log10f on some ABIs
    
    The commit 9247f53219 triggered some regressions on loongarch and
    riscv:
    
    math/test-float-log10
    math/test-float32-log10
    
    And it is due a wrong sync with CORE-MATH for special 0.0/-0.0
    inputs.
    
    Checked on aarch64-linux-gnu and loongarch64-linux-gnu-lp64d.

Diff:
---
 sysdeps/ieee754/flt-32/e_log10f.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/sysdeps/ieee754/flt-32/e_log10f.c b/sysdeps/ieee754/flt-32/e_log10f.c
index 058ce31f09..03d9e281f3 100644
--- a/sysdeps/ieee754/flt-32/e_log10f.c
+++ b/sysdeps/ieee754/flt-32/e_log10f.c
@@ -37,9 +37,8 @@ as_special (float x)
     return x; /* +inf */
   uint32_t ax = ux << 1;
   if (ax == 0u)
-    { /* -0.0 */
-      __math_divzerof (1);
-    }
+    /* -0.0 */
+    return  __math_divzerof (1);
   if (ax > 0xff000000u)
     return x + x; /* nan */
   return __math_invalidf (x);