minor fix

Author: wldfngrs

libc/src/math/generic/tanpif16.cpp

@@ -41,14 +41,14 @@ LLVM_LIBC_FUNCTION(float16, tanpif16, (float16 x)) {
   FPBits xbits(x);
 
   uint16_t x_u = xbits.uintval();
-  bool x_sign = x_u >> 15;
   uint16_t x_abs = x_u & 0x7fff;
 
   if (LIBC_UNLIKELY(x_abs == 0U))
     return x;
 
   // Handle exceptional values
   if (LIBC_UNLIKELY(x_abs <= 0x4335)) {
+    bool x_sign = x_u >> 15;
     if (auto r = TANF16_EXCEPTS.lookup_odd(x_abs, x_sign);
         LIBC_UNLIKELY(r.has_value()))
       return r.value();

libc/utils/MPFRWrapper/MPFRUtils.cpp

@@ -563,12 +563,12 @@ class MPFRNumber {
   MPFRNumber tanpi() const {
     MPFRNumber result(*this);
 
-    //#if MPFR_VERSION_MAJOR > 4 ||                                                  \
+#if MPFR_VERSION_MAJOR > 4 ||                                                  \
     (MPFR_VERSION_MAJOR == 4 && MPFR_VERSION_MINOR >= 2)
 
-    //    mpfr_tanpi(result.value, value, mpfr_rounding);
-    //    return result;
-    // #else
+    mpfr_tanpi(result.value, value, mpfr_rounding);
+    return result;
+#else
     MPFRNumber value_ret_exact(*this);
     MPFRNumber value_one(*this);
     mpfr_set_si(value_one.value, 1, MPFR_RNDN);
@@ -607,7 +607,7 @@ class MPFRNumber {
     mpfr_mul(value_pi.value, value_pi.value, value, MPFR_RNDN);
     mpfr_tan(result.value, value_pi.value, mpfr_rounding);
     return result;
-    // #endif
+#endif
   }
 
   MPFRNumber trunc() const {