[libc] changed the return cast from static_cast<float16> to fputil::cast<float16> in exp10f16.cpp. (#112889)

wldfngrs · web-flow · commit 803220db4320 · 2024-10-18T10:24:19.000-04:00
switch to fputil::cast to fix rounding with compiler-rt
diff --git a/libc/src/math/generic/exp10f16.cpp b/libc/src/math/generic/exp10f16.cpp
@@ -124,7 +124,7 @@ LLVM_LIBC_FUNCTION(float16, exp10f16, (float16 x)) {
 
   // 10^x = 2^((hi + mid) * log2(10)) * 10^lo
   auto [exp2_hi_mid, exp10_lo] = exp10_range_reduction(x);
-  return static_cast<float16>(exp2_hi_mid * exp10_lo);
+  return fputil::cast<float16>(exp2_hi_mid * exp10_lo);
 }
 
 } // namespace LIBC_NAMESPACE_DECL

Original file line number	Diff line number	Diff line change
`@@ -124,7 +124,7 @@ LLVM_LIBC_FUNCTION(float16, exp10f16, (float16 x)) {`
`124`	`124`
`125`	`125`	`// 10^x = 2^((hi + mid) * log2(10)) * 10^lo`
`126`	`126`	`auto [exp2_hi_mid, exp10_lo] = exp10_range_reduction(x);`
`127`		`- return static_cast<float16>(exp2_hi_mid * exp10_lo);`
	`127`	`+ return fputil::cast<float16>(exp2_hi_mid * exp10_lo);`
`128`	`128`	`}`
`129`	`129`
`130`	`130`	`} // namespace LIBC_NAMESPACE_DECL`