We use a different function from the one in ieeefp.h.

This may be a studio specific patch. Need to investigate if this can be

removed.

diff --git a/mfbt/decimal/Decimal.cpp b/mfbt/decimal/Decimal.cpp

--- a/mfbt/decimal/Decimal.cpp

+++ b/mfbt/decimal/Decimal.cpp

@@ -33,6 +33,7 @@

 #include <algorithm>

 #include <float.h>

+#include <ieeefp.h>

 using namespace moz_decimal_utils;

@@ -686,13 +687,13 @@

 Decimal Decimal::fromDouble(double doubleValue)

 {

-    if (std::isfinite(doubleValue))

+    if (finite(doubleValue))

         return fromString(mozToString(doubleValue));

-    if (std::isinf(doubleValue))

-        return infinity(doubleValue < 0 ? Negative : Positive);

+    if (isnand(doubleValue))

+        return nan();

-    return nan();

+    return infinity(doubleValue < 0 ? Negative : Positive);

 }

 Decimal Decimal::fromString(const String& str)