FloatUtils: Remove using namespace std in ApproximateReciprocal()

This was made quite a long time ago when we supported 32-bit ARM targets

1 files changed, 4 insertions, 10 deletions

diff --git a/Source/Core/Common/FloatUtils.cpp b/Source/Core/Common/FloatUtils.cpp
index 4bbb4266d6..0cd78c30da 100644
--- a/Source/Core/Common/FloatUtils.cpp
+++ b/Source/Core/Common/FloatUtils.cpp
@@ -167,12 +167,6 @@ const std::array<BaseAndDec, 32> fres_expected = {{
 // Used by fres and ps_res.
 double ApproximateReciprocal(double val)
 {
-  // We are using namespace std scoped here because the Android NDK is complete trash as usual
-  // For 32bit targets(mips, ARMv7, x86) it doesn't provide an implementation of std::copysign
-  // but instead provides just global namespace copysign implementations.
-  // The workaround for this is to just use namespace std within this function's scope
-  // That way on real toolchains it will use the std:: variant like normal.
-  using namespace std;
   union
   {
     double valf;
@@ -186,23 +180,23 @@ double ApproximateReciprocal(double val)
 
   // Special case 0
   if (mantissa == 0 && exponent == 0)
-    return copysign(std::numeric_limits<double>::infinity(), valf);
+    return std::copysign(std::numeric_limits<double>::infinity(), valf);
 
   // Special case NaN-ish numbers
   if (exponent == (0x7FFLL << 52))
   {
     if (mantissa == 0)
-      return copysign(0.0, valf);
+      return std::copysign(0.0, valf);
     return 0.0 + valf;
   }
 
   // Special case small inputs
   if (exponent < (895LL << 52))
-    return copysign(std::numeric_limits<float>::max(), valf);
+    return std::copysign(std::numeric_limits<float>::max(), valf);
 
   // Special case large inputs
   if (exponent >= (1149LL << 52))
-    return copysign(0.0, valf);
+    return std::copysign(0.0, valf);
 
   exponent = (0x7FDLL << 52) - exponent;