diff --git a/Zend/tests/bug42143.phpt b/Zend/tests/bug42143.phpt
new file mode 100644
index 00000000000..8a73d41bf8e
--- /dev/null
+++ b/Zend/tests/bug42143.phpt
@@ -0,0 +1,38 @@
+--TEST--
+bug #42143 (The constant NAN is reported as 0 on Windows build)
+--CREDITS--
+Venkat Raman Don
+--FILE--
+<?php
+echo "Testing NAN:\n";
+echo "NAN= ";
+var_dump(NAN);
+var_dump(tan(-1) == 123);
+var_dump(cos(-100) == "PHP String");
+var_dump(deg2rad(-5.6) == null);
+var_dump(sqrt(-0.1) == false);
+var_dump(sqrt(cos(M_PI)) == 0.1);
+var_dump(NAN);
+var_dump(is_nan(sqrt(-1.005)) == false);
+var_dump(is_nan(floor(1)) == true);
+var_dump(log10(-1) == log(-1));
+var_dump(log10(-1) != log10(-1));
+var_dump(is_finite(log10(-1)) == false);
+var_dump(NAN == NAN);
+?>
+--EXPECT--
+Testing NAN:
+NAN= float(NAN)
+bool(false)
+bool(false)
+bool(false)
+bool(false)
+bool(false)
+float(NAN)
+bool(false)
+bool(false)
+bool(false)
+bool(true)
+bool(true)
+bool(false)
+
diff --git a/win32/build/config.w32.h.in b/win32/build/config.w32.h.in
index ce1429c581f..ddb584927b7 100644
--- a/win32/build/config.w32.h.in
+++ b/win32/build/config.w32.h.in
@@ -160,7 +160,7 @@
 
 #undef HAVE_ATOF_ACCEPTS_NAN
 #undef HAVE_ATOF_ACCEPTS_INF
-#define HAVE_HUGE_VAL_NAN 1
+#define HAVE_HUGE_VAL_NAN 0
 
 /* vs.net 2005 has a 64-bit time_t.  This will likely break
  * 3rdParty libs that were built with older compilers; switch