Input type Number maximum value increase

Source/core/html/parser/HTMLParserIdioms.cpp

 /*
  * Copyright (C) 2010 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 77 matching lines @@
 
 String serializeForNumberType(double number)
 {
     // According to HTML5, "the best representation of the number n as a floating
     // point number" is a string produced by applying ToString() to n.
     return String::numberToStringECMAScript(number);
 }
 
 Decimal parseToDecimalForNumberType(const String& string, const Decimal& fallbackValue)
 {
-    // See HTML5 2.5.4.3 `Real numbers.' and parseToDoubleForNumberType
-
+    // http://www.whatwg.org/specs/web-apps/current-work/#floating-point-numbers and parseToDoubleForNumberType
     // String::toDouble() accepts leading + and whitespace characters, which are not valid here.
     const UChar firstCharacter = string[0];
     if (firstCharacter != '-' && firstCharacter != '.' && !isASCIIDigit(firstCharacter))
         return fallbackValue;
 
     const Decimal value = Decimal::fromString(string);
     if (!value.isFinite())
         return fallbackValue;
 
-    // Numbers are considered finite IEEE 754 single-precision floating point values.
-    // See HTML5 2.5.4.3 `Real numbers.'
-    // FIXME: We should use numeric_limits<double>::max for number input type.
-    const Decimal floatMax = Decimal::fromDouble(std::numeric_limits<float>::max());
-    if (value < -floatMax || value > floatMax)
+    // Numbers are considered finite IEEE 754 Double-precision floating point values.
+    const Decimal doubleMax = Decimal::fromDouble(std::numeric_limits<double>::max());
+    if (value < -doubleMax || value > doubleMax)
         return fallbackValue;
 
     // We return +0 for -0 case.
     return value.isZero() ? Decimal(0) : value;
 }
 
 double parseToDoubleForNumberType(const String& string, double fallbackValue)
 {
-    // See HTML5 2.5.4.3 `Real numbers.'
-
+    // http://www.whatwg.org/specs/web-apps/current-work/#floating-point-numbers
     // String::toDouble() accepts leading + and whitespace characters, which are not valid here.
     UChar firstCharacter = string[0];
     if (firstCharacter != '-' && firstCharacter != '.' && !isASCIIDigit(firstCharacter))
         return fallbackValue;
 
     bool valid = false;
     double value = string.toDouble(&valid);
     if (!valid)
         return fallbackValue;
 
     // NaN and infinity are considered valid by String::toDouble, but not valid here.
     if (!std::isfinite(value))
         return fallbackValue;
 
-    // Numbers are considered finite IEEE 754 single-precision floating point values.
-    // See HTML5 2.5.4.3 `Real numbers.'
-    if (-std::numeric_limits<float>::max() > value || value > std::numeric_limits<float>::max())
+    // Numbers are considered finite IEEE 754 Double-precision floating point values.
+    if (-std::numeric_limits<double>::max() > value || value > std::numeric_limits<double>::max())
         return fallbackValue;
 
     // The following expression converts -0 to +0.
     return value ? value : 0;
 }
 
 template <typename CharacterType>
 static bool parseHTMLIntegerInternal(const CharacterType* position, const CharacterType* end, int& value)
 {
     // Step 3
@@ skipping 239 matching lines @@
     // It's possible to have hash collisions between arbitrary strings and
     // known identifiers (e.g. "bvvfg" collides with "script").
     // However ASSERTs in StringImpl::createStatic guard against there ever being collisions
     // between static strings.
     if (!equal(it->value, characters, length))
         return 0;
     return it->value;
 }
 
 }