[libc] Fix type warning on gcc in float to str

[michaelrj-google]

Minor cast warning that was missed in previous patch. Fixed with
explicit cast.

[llvmbot]

@llvm/pr-subscribers-libc

Author: None (michaelrj-google)

Changes

Minor cast warning that was missed in previous patch. Fixed with
explicit cast.

---

Full diff: https://github.com/llvm/llvm-project/pull/79482.diff

1 Files Affected:

• (modified) libc/src/__support/float_to_string.h (+1-1)

diff --git a/libc/src/__support/float_to_string.h b/libc/src/__support/float_to_string.h
index 4dc9d6eb3cb7352..1431aeffa5b2108 100644
--- a/libc/src/__support/float_to_string.h
+++ b/libc/src/__support/float_to_string.h
@@ -503,7 +503,7 @@ class FloatToString {
 
       cpp::UInt<MID_INT_SIZE> val;
 
-      const uint32_t pos_exp = idx * IDX_SIZE;
+      const uint32_t pos_exp = static_cast<uint32_t>(idx * IDX_SIZE);
 
 #if defined(LIBC_COPT_FLOAT_TO_STR_USE_DYADIC_FLOAT)
       // ----------------------- DYADIC FLOAT CALC MODE ------------------------

[SchrodingerZhu]

LGTM