diff --git a/ddmd/root/ctfloat.h b/ddmd/root/ctfloat.h
index c0f5136f55..9071ed0937 100644
--- a/ddmd/root/ctfloat.h
+++ b/ddmd/root/ctfloat.h
@@ -52,6 +52,7 @@ struct CTFloat
     // implemented in gen/ctfloat.cpp
     static void _init();
     static void toAPFloat(real_t src, llvm::APFloat &dst);
+    static real_t fromAPFloat(const llvm::APFloat &src);
 
     static bool isFloat32LiteralOutOfRange(const char *literal);
     static bool isFloat64LiteralOutOfRange(const char *literal);
diff --git a/gen/ctfloat.cpp b/gen/ctfloat.cpp
index 37c9d00e56..f9dc47eaa2 100644
--- a/gen/ctfloat.cpp
+++ b/gen/ctfloat.cpp
@@ -80,15 +80,27 @@ void CTFloat::toAPFloat(const real_t src, APFloat &dst) {
 
 ////////////////////////////////////////////////////////////////////////////////
 
-real_t CTFloat::parse(const char *literal, bool *isOutOfRange) {
-  const APFloat ap = parseLiteral(*apSemantics, literal, isOutOfRange);
-  const APInt bits = ap.bitcastToAPInt();
+real_t CTFloat::fromAPFloat(const APFloat &src_) {
+  APFloat src = src_;
+  if (&src.getSemantics() != apSemantics) {
+    bool ignored;
+    src.convert(*apSemantics, APFloat::rmNearestTiesToEven, &ignored);
+  }
+
+  const APInt bits = src.bitcastToAPInt();
 
   CTFloatUnion u;
   memcpy(u.bits, bits.getRawData(), bits.getBitWidth() / 8);
   return u.fp;
 }
 
+////////////////////////////////////////////////////////////////////////////////
+
+real_t CTFloat::parse(const char *literal, bool *isOutOfRange) {
+  const APFloat ap = parseLiteral(*apSemantics, literal, isOutOfRange);
+  return fromAPFloat(ap);
+}
+
 bool CTFloat::isFloat32LiteralOutOfRange(const char *literal) {
   bool isOutOfRange;
   parseLiteral(APFloat::IEEEsingle AP_SEMANTICS_PARENS, literal, &isOutOfRange);
diff --git a/gen/target.cpp b/gen/target.cpp
index c027da1264..2519158a68 100644
--- a/gen/target.cpp
+++ b/gen/target.cpp
@@ -55,6 +55,13 @@ void Target::_init() {
   const auto IEEEquad = &APFloat::IEEEquad;
 #endif
 
+  RealProperties.nan =
+      CTFloat::fromAPFloat(APFloat::getQNaN(*targetRealSemantics));
+  RealProperties.snan =
+      CTFloat::fromAPFloat(APFloat::getSNaN(*targetRealSemantics));
+  RealProperties.infinity =
+      CTFloat::fromAPFloat(APFloat::getInf(*targetRealSemantics));
+
   if (targetRealSemantics == IEEEdouble) {
     RealProperties.max = CTFloat::parse("0x1.fffffffffffffp+1023");
     RealProperties.min_normal = CTFloat::parse("0x1p-1022");