wtf reformat test

third_party/WebKit/Source/wtf/dtoa/double-conversion.h

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 16 matching lines @@
 
 #ifndef DOUBLE_CONVERSION_DOUBLE_CONVERSION_H_
 #define DOUBLE_CONVERSION_DOUBLE_CONVERSION_H_
 
 #include "wtf/dtoa/utils.h"
 
 namespace WTF {
 
 namespace double_conversion {
 
-    class DoubleToStringConverter {
-    public:
-        // When calling ToFixed with a double > 10^kMaxFixedDigitsBeforePoint
-        // or a requested_digits parameter > kMaxFixedDigitsAfterPoint then the
-        // function returns false.
-        static const int kMaxFixedDigitsBeforePoint = 60;
-        static const int kMaxFixedDigitsAfterPoint = 60;
-
-        // When calling ToExponential with a requested_digits
-        // parameter > kMaxExponentialDigits then the function returns false.
-        static const int kMaxExponentialDigits = 120;
-
-        // When calling ToPrecision with a requested_digits
-        // parameter < kMinPrecisionDigits or requested_digits > kMaxPrecisionDigits
-        // then the function returns false.
-        static const int kMinPrecisionDigits = 1;
-        static const int kMaxPrecisionDigits = 120;
-
-        enum Flags {
-            NO_FLAGS = 0,
-            EMIT_POSITIVE_EXPONENT_SIGN = 1,
-            EMIT_TRAILING_DECIMAL_POINT = 2,
-            EMIT_TRAILING_ZERO_AFTER_POINT = 4,
-            UNIQUE_ZERO = 8
-        };
-
-        // Flags should be a bit-or combination of the possible Flags-enum.
-        //  - NO_FLAGS: no special flags.
-        //  - EMIT_POSITIVE_EXPONENT_SIGN: when the number is converted into exponent
-        //    form, emits a '+' for positive exponents. Example: 1.2e+2.
-        //  - EMIT_TRAILING_DECIMAL_POINT: when the input number is an integer and is
-        //    converted into decimal format then a trailing decimal point is appended.
-        //    Example: 2345.0 is converted to "2345.".
-        //  - EMIT_TRAILING_ZERO_AFTER_POINT: in addition to a trailing decimal point
-        //    emits a trailing '0'-character. This flag requires the
-        //    EXMIT_TRAILING_DECIMAL_POINT flag.
-        //    Example: 2345.0 is converted to "2345.0".
-        //  - UNIQUE_ZERO: "-0.0" is converted to "0.0".
-        //
-        // Infinity symbol and nan_symbol provide the string representation for these
-        // special values. If the string is NULL and the special value is encountered
-        // then the conversion functions return false.
-        //
-        // The exponent_character is used in exponential representations. It is
-        // usually 'e' or 'E'.
-        //
-        // When converting to the shortest representation the converter will
-        // represent input numbers in decimal format if they are in the interval
-        // [10^decimal_in_shortest_low; 10^decimal_in_shortest_high[
-        //    (lower boundary included, greater boundary excluded).
-        // Example: with decimal_in_shortest_low = -6 and
-        //               decimal_in_shortest_high = 21:
-        //   ToShortest(0.000001)  -> "0.000001"
-        //   ToShortest(0.0000001) -> "1e-7"
-        //   ToShortest(111111111111111111111.0)  -> "111111111111111110000"
-        //   ToShortest(100000000000000000000.0)  -> "100000000000000000000"
-        //   ToShortest(1111111111111111111111.0) -> "1.1111111111111111e+21"
-        //
-        // When converting to precision mode the converter may add
-        // max_leading_padding_zeroes before returning the number in exponential
-        // format.
-        // Example with max_leading_padding_zeroes_in_precision_mode = 6.
-        //   ToPrecision(0.0000012345, 2) -> "0.0000012"
-        //   ToPrecision(0.00000012345, 2) -> "1.2e-7"
-        // Similarily the converter may add up to
-        // max_trailing_padding_zeroes_in_precision_mode in precision mode to avoid
-        // returning an exponential representation. A zero added by the
-        // EMIT_TRAILING_ZERO_AFTER_POINT flag is counted for this limit.
-        // Examples for max_trailing_padding_zeroes_in_precision_mode = 1:
-        //   ToPrecision(230.0, 2) -> "230"
-        //   ToPrecision(230.0, 2) -> "230."  with EMIT_TRAILING_DECIMAL_POINT.
-        //   ToPrecision(230.0, 2) -> "2.3e2" with EMIT_TRAILING_ZERO_AFTER_POINT.
-        DoubleToStringConverter(int flags,
-                                const char* infinity_symbol,
-                                const char* nan_symbol,
-                                char exponent_character,
-                                int decimal_in_shortest_low,
-                                int decimal_in_shortest_high,
-                                int max_leading_padding_zeroes_in_precision_mode,
-                                int max_trailing_padding_zeroes_in_precision_mode)
-        : flags_(flags),
+class DoubleToStringConverter {
+ public:
+  // When calling ToFixed with a double > 10^kMaxFixedDigitsBeforePoint
+  // or a requested_digits parameter > kMaxFixedDigitsAfterPoint then the
+  // function returns false.
+  static const int kMaxFixedDigitsBeforePoint = 60;
+  static const int kMaxFixedDigitsAfterPoint = 60;
+
+  // When calling ToExponential with a requested_digits
+  // parameter > kMaxExponentialDigits then the function returns false.
+  static const int kMaxExponentialDigits = 120;
+
+  // When calling ToPrecision with a requested_digits
+  // parameter < kMinPrecisionDigits or requested_digits > kMaxPrecisionDigits
+  // then the function returns false.
+  static const int kMinPrecisionDigits = 1;
+  static const int kMaxPrecisionDigits = 120;
+
+  enum Flags {
+    NO_FLAGS = 0,
+    EMIT_POSITIVE_EXPONENT_SIGN = 1,
+    EMIT_TRAILING_DECIMAL_POINT = 2,
+    EMIT_TRAILING_ZERO_AFTER_POINT = 4,
+    UNIQUE_ZERO = 8
+  };
+
+  // Flags should be a bit-or combination of the possible Flags-enum.
+  //  - NO_FLAGS: no special flags.
+  //  - EMIT_POSITIVE_EXPONENT_SIGN: when the number is converted into exponent
+  //    form, emits a '+' for positive exponents. Example: 1.2e+2.
+  //  - EMIT_TRAILING_DECIMAL_POINT: when the input number is an integer and is
+  //    converted into decimal format then a trailing decimal point is appended.
+  //    Example: 2345.0 is converted to "2345.".
+  //  - EMIT_TRAILING_ZERO_AFTER_POINT: in addition to a trailing decimal point
+  //    emits a trailing '0'-character. This flag requires the
+  //    EXMIT_TRAILING_DECIMAL_POINT flag.
+  //    Example: 2345.0 is converted to "2345.0".
+  //  - UNIQUE_ZERO: "-0.0" is converted to "0.0".
+  //
+  // Infinity symbol and nan_symbol provide the string representation for these
+  // special values. If the string is NULL and the special value is encountered
+  // then the conversion functions return false.
+  //
+  // The exponent_character is used in exponential representations. It is
+  // usually 'e' or 'E'.
+  //
+  // When converting to the shortest representation the converter will
+  // represent input numbers in decimal format if they are in the interval
+  // [10^decimal_in_shortest_low; 10^decimal_in_shortest_high[
+  //    (lower boundary included, greater boundary excluded).
+  // Example: with decimal_in_shortest_low = -6 and
+  //               decimal_in_shortest_high = 21:
+  //   ToShortest(0.000001)  -> "0.000001"
+  //   ToShortest(0.0000001) -> "1e-7"
+  //   ToShortest(111111111111111111111.0)  -> "111111111111111110000"
+  //   ToShortest(100000000000000000000.0)  -> "100000000000000000000"
+  //   ToShortest(1111111111111111111111.0) -> "1.1111111111111111e+21"
+  //
+  // When converting to precision mode the converter may add
+  // max_leading_padding_zeroes before returning the number in exponential
+  // format.
+  // Example with max_leading_padding_zeroes_in_precision_mode = 6.
+  //   ToPrecision(0.0000012345, 2) -> "0.0000012"
+  //   ToPrecision(0.00000012345, 2) -> "1.2e-7"
+  // Similarily the converter may add up to
+  // max_trailing_padding_zeroes_in_precision_mode in precision mode to avoid
+  // returning an exponential representation. A zero added by the
+  // EMIT_TRAILING_ZERO_AFTER_POINT flag is counted for this limit.
+  // Examples for max_trailing_padding_zeroes_in_precision_mode = 1:
+  //   ToPrecision(230.0, 2) -> "230"
+  //   ToPrecision(230.0, 2) -> "230."  with EMIT_TRAILING_DECIMAL_POINT.
+  //   ToPrecision(230.0, 2) -> "2.3e2" with EMIT_TRAILING_ZERO_AFTER_POINT.
+  DoubleToStringConverter(int flags,
+                          const char* infinity_symbol,
+                          const char* nan_symbol,
+                          char exponent_character,
+                          int decimal_in_shortest_low,
+                          int decimal_in_shortest_high,
+                          int max_leading_padding_zeroes_in_precision_mode,
+                          int max_trailing_padding_zeroes_in_precision_mode)
+      : flags_(flags),
         infinity_symbol_(infinity_symbol),
         nan_symbol_(nan_symbol),
         exponent_character_(exponent_character),
         decimal_in_shortest_low_(decimal_in_shortest_low),
         decimal_in_shortest_high_(decimal_in_shortest_high),
         max_leading_padding_zeroes_in_precision_mode_(
-                                                      max_leading_padding_zeroes_in_precision_mode),
+            max_leading_padding_zeroes_in_precision_mode),
         max_trailing_padding_zeroes_in_precision_mode_(
-                                                       max_trailing_padding_zeroes_in_precision_mode) {
-            // When 'trailing zero after the point' is set, then 'trailing point'
-            // must be set too.
-            ASSERT(((flags & EMIT_TRAILING_DECIMAL_POINT) != 0) ||
-                   !((flags & EMIT_TRAILING_ZERO_AFTER_POINT) != 0));
-        }
-
-        // Returns a converter following the EcmaScript specification.
-        static const DoubleToStringConverter& EcmaScriptConverter();
-
-        // Computes the shortest string of digits that correctly represent the input
-        // number. Depending on decimal_in_shortest_low and decimal_in_shortest_high
-        // (see constructor) it then either returns a decimal representation, or an
-        // exponential representation.
-        // Example with decimal_in_shortest_low = -6,
-        //              decimal_in_shortest_high = 21,
-        //              EMIT_POSITIVE_EXPONENT_SIGN activated, and
-        //              EMIT_TRAILING_DECIMAL_POINT deactived:
-        //   ToShortest(0.000001)  -> "0.000001"
-        //   ToShortest(0.0000001) -> "1e-7"
-        //   ToShortest(111111111111111111111.0)  -> "111111111111111110000"
-        //   ToShortest(100000000000000000000.0)  -> "100000000000000000000"
-        //   ToShortest(1111111111111111111111.0) -> "1.1111111111111111e+21"
-        //
-        // Note: the conversion may round the output if the returned string
-        // is accurate enough to uniquely identify the input-number.
-        // For example the most precise representation of the double 9e59 equals
-        // "899999999999999918767229449717619953810131273674690656206848", but
-        // the converter will return the shorter (but still correct) "9e59".
-        //
-        // Returns true if the conversion succeeds. The conversion always succeeds
-        // except when the input value is special and no infinity_symbol or
-        // nan_symbol has been given to the constructor.
-        bool ToShortest(double value, StringBuilder* result_builder) const;
-
-
-        // Computes a decimal representation with a fixed number of digits after the
-        // decimal point. The last emitted digit is rounded.
-        //
-        // Examples:
-        //   ToFixed(3.12, 1) -> "3.1"
-        //   ToFixed(3.1415, 3) -> "3.142"
-        //   ToFixed(1234.56789, 4) -> "1234.5679"
-        //   ToFixed(1.23, 5) -> "1.23000"
-        //   ToFixed(0.1, 4) -> "0.1000"
-        //   ToFixed(1e30, 2) -> "1000000000000000019884624838656.00"
-        //   ToFixed(0.1, 30) -> "0.100000000000000005551115123126"
-        //   ToFixed(0.1, 17) -> "0.10000000000000001"
-        //
-        // If requested_digits equals 0, then the tail of the result depends on
-        // the EMIT_TRAILING_DECIMAL_POINT and EMIT_TRAILING_ZERO_AFTER_POINT.
-        // Examples, for requested_digits == 0,
-        //   let EMIT_TRAILING_DECIMAL_POINT and EMIT_TRAILING_ZERO_AFTER_POINT be
-        //    - false and false: then 123.45 -> 123
-        //                             0.678 -> 1
-        //    - true and false: then 123.45 -> 123.
-        //                            0.678 -> 1.
-        //    - true and true: then 123.45 -> 123.0
-        //                           0.678 -> 1.0
-        //
-        // Returns true if the conversion succeeds. The conversion always succeeds
-        // except for the following cases:
-        //   - the input value is special and no infinity_symbol or nan_symbol has
-        //     been provided to the constructor,
-        //   - 'value' > 10^kMaxFixedDigitsBeforePoint, or
-        //   - 'requested_digits' > kMaxFixedDigitsAfterPoint.
-        // The last two conditions imply that the result will never contain more than
-        // 1 + kMaxFixedDigitsBeforePoint + 1 + kMaxFixedDigitsAfterPoint characters
-        // (one additional character for the sign, and one for the decimal point).
-        bool ToFixed(double value,
+            max_trailing_padding_zeroes_in_precision_mode) {
+    // When 'trailing zero after the point' is set, then 'trailing point'
+    // must be set too.
+    ASSERT(((flags & EMIT_TRAILING_DECIMAL_POINT) != 0) ||
+           !((flags & EMIT_TRAILING_ZERO_AFTER_POINT) != 0));
+  }
+
+  // Returns a converter following the EcmaScript specification.
+  static const DoubleToStringConverter& EcmaScriptConverter();
+
+  // Computes the shortest string of digits that correctly represent the input
+  // number. Depending on decimal_in_shortest_low and decimal_in_shortest_high
+  // (see constructor) it then either returns a decimal representation, or an
+  // exponential representation.
+  // Example with decimal_in_shortest_low = -6,
+  //              decimal_in_shortest_high = 21,
+  //              EMIT_POSITIVE_EXPONENT_SIGN activated, and
+  //              EMIT_TRAILING_DECIMAL_POINT deactived:
+  //   ToShortest(0.000001)  -> "0.000001"
+  //   ToShortest(0.0000001) -> "1e-7"
+  //   ToShortest(111111111111111111111.0)  -> "111111111111111110000"
+  //   ToShortest(100000000000000000000.0)  -> "100000000000000000000"
+  //   ToShortest(1111111111111111111111.0) -> "1.1111111111111111e+21"
+  //
+  // Note: the conversion may round the output if the returned string
+  // is accurate enough to uniquely identify the input-number.
+  // For example the most precise representation of the double 9e59 equals
+  // "899999999999999918767229449717619953810131273674690656206848", but
+  // the converter will return the shorter (but still correct) "9e59".
+  //
+  // Returns true if the conversion succeeds. The conversion always succeeds
+  // except when the input value is special and no infinity_symbol or
+  // nan_symbol has been given to the constructor.
+  bool ToShortest(double value, StringBuilder* result_builder) const;
+
+  // Computes a decimal representation with a fixed number of digits after the
+  // decimal point. The last emitted digit is rounded.
+  //
+  // Examples:
+  //   ToFixed(3.12, 1) -> "3.1"
+  //   ToFixed(3.1415, 3) -> "3.142"
+  //   ToFixed(1234.56789, 4) -> "1234.5679"
+  //   ToFixed(1.23, 5) -> "1.23000"
+  //   ToFixed(0.1, 4) -> "0.1000"
+  //   ToFixed(1e30, 2) -> "1000000000000000019884624838656.00"
+  //   ToFixed(0.1, 30) -> "0.100000000000000005551115123126"
+  //   ToFixed(0.1, 17) -> "0.10000000000000001"
+  //
+  // If requested_digits equals 0, then the tail of the result depends on
+  // the EMIT_TRAILING_DECIMAL_POINT and EMIT_TRAILING_ZERO_AFTER_POINT.
+  // Examples, for requested_digits == 0,
+  //   let EMIT_TRAILING_DECIMAL_POINT and EMIT_TRAILING_ZERO_AFTER_POINT be
+  //    - false and false: then 123.45 -> 123
+  //                             0.678 -> 1
+  //    - true and false: then 123.45 -> 123.
+  //                            0.678 -> 1.
+  //    - true and true: then 123.45 -> 123.0
+  //                           0.678 -> 1.0
+  //
+  // Returns true if the conversion succeeds. The conversion always succeeds
+  // except for the following cases:
+  //   - the input value is special and no infinity_symbol or nan_symbol has
+  //     been provided to the constructor,
+  //   - 'value' > 10^kMaxFixedDigitsBeforePoint, or
+  //   - 'requested_digits' > kMaxFixedDigitsAfterPoint.
+  // The last two conditions imply that the result will never contain more than
+  // 1 + kMaxFixedDigitsBeforePoint + 1 + kMaxFixedDigitsAfterPoint characters
+  // (one additional character for the sign, and one for the decimal point).
+  bool ToFixed(double value,
+               int requested_digits,
+               StringBuilder* result_builder) const;
+
+  // Computes a representation in exponential format with requested_digits
+  // after the decimal point. The last emitted digit is rounded.
+  // If requested_digits equals -1, then the shortest exponential representation
+  // is computed.
+  //
+  // Examples with EMIT_POSITIVE_EXPONENT_SIGN deactivated, and
+  //               exponent_character set to 'e'.
+  //   ToExponential(3.12, 1) -> "3.1e0"
+  //   ToExponential(5.0, 3) -> "5.000e0"
+  //   ToExponential(0.001, 2) -> "1.00e-3"
+  //   ToExponential(3.1415, -1) -> "3.1415e0"
+  //   ToExponential(3.1415, 4) -> "3.1415e0"
+  //   ToExponential(3.1415, 3) -> "3.142e0"
+  //   ToExponential(123456789000000, 3) -> "1.235e14"
+  //   ToExponential(1000000000000000019884624838656.0, -1) -> "1e30"
+  //   ToExponential(1000000000000000019884624838656.0, 32) ->
+  //                     "1.00000000000000001988462483865600e30"
+  //   ToExponential(1234, 0) -> "1e3"
+  //
+  // Returns true if the conversion succeeds. The conversion always succeeds
+  // except for the following cases:
+  //   - the input value is special and no infinity_symbol or nan_symbol has
+  //     been provided to the constructor,
+  //   - 'requested_digits' > kMaxExponentialDigits.
+  // The last condition implies that the result will never contain more than
+  // kMaxExponentialDigits + 8 characters (the sign, the digit before the
+  // decimal point, the decimal point, the exponent character, the
+  // exponent's sign, and at most 3 exponent digits).
+  bool ToExponential(double value,
                      int requested_digits,
                      StringBuilder* result_builder) const;
 
-        // Computes a representation in exponential format with requested_digits
-        // after the decimal point. The last emitted digit is rounded.
-        // If requested_digits equals -1, then the shortest exponential representation
-        // is computed.
-        //
-        // Examples with EMIT_POSITIVE_EXPONENT_SIGN deactivated, and
-        //               exponent_character set to 'e'.
-        //   ToExponential(3.12, 1) -> "3.1e0"
-        //   ToExponential(5.0, 3) -> "5.000e0"
-        //   ToExponential(0.001, 2) -> "1.00e-3"
-        //   ToExponential(3.1415, -1) -> "3.1415e0"
-        //   ToExponential(3.1415, 4) -> "3.1415e0"
-        //   ToExponential(3.1415, 3) -> "3.142e0"
-        //   ToExponential(123456789000000, 3) -> "1.235e14"
-        //   ToExponential(1000000000000000019884624838656.0, -1) -> "1e30"
-        //   ToExponential(1000000000000000019884624838656.0, 32) ->
-        //                     "1.00000000000000001988462483865600e30"
-        //   ToExponential(1234, 0) -> "1e3"
-        //
-        // Returns true if the conversion succeeds. The conversion always succeeds
-        // except for the following cases:
-        //   - the input value is special and no infinity_symbol or nan_symbol has
-        //     been provided to the constructor,
-        //   - 'requested_digits' > kMaxExponentialDigits.
-        // The last condition implies that the result will never contain more than
-        // kMaxExponentialDigits + 8 characters (the sign, the digit before the
-        // decimal point, the decimal point, the exponent character, the
-        // exponent's sign, and at most 3 exponent digits).
-        bool ToExponential(double value,
-                           int requested_digits,
-                           StringBuilder* result_builder) const;
-
-        // Computes 'precision' leading digits of the given 'value' and returns them
-        // either in exponential or decimal format, depending on
-        // max_{leading|trailing}_padding_zeroes_in_precision_mode (given to the
-        // constructor).
-        // The last computed digit is rounded.
-        //
-        // Example with max_leading_padding_zeroes_in_precision_mode = 6.
-        //   ToPrecision(0.0000012345, 2) -> "0.0000012"
-        //   ToPrecision(0.00000012345, 2) -> "1.2e-7"
-        // Similarily the converter may add up to
-        // max_trailing_padding_zeroes_in_precision_mode in precision mode to avoid
-        // returning an exponential representation. A zero added by the
-        // EMIT_TRAILING_ZERO_AFTER_POINT flag is counted for this limit.
-        // Examples for max_trailing_padding_zeroes_in_precision_mode = 1:
-        //   ToPrecision(230.0, 2) -> "230"
-        //   ToPrecision(230.0, 2) -> "230."  with EMIT_TRAILING_DECIMAL_POINT.
-        //   ToPrecision(230.0, 2) -> "2.3e2" with EMIT_TRAILING_ZERO_AFTER_POINT.
-        // Examples for max_trailing_padding_zeroes_in_precision_mode = 3, and no
-        //    EMIT_TRAILING_ZERO_AFTER_POINT:
-        //   ToPrecision(123450.0, 6) -> "123450"
-        //   ToPrecision(123450.0, 5) -> "123450"
-        //   ToPrecision(123450.0, 4) -> "123500"
-        //   ToPrecision(123450.0, 3) -> "123000"
-        //   ToPrecision(123450.0, 2) -> "1.2e5"
-        //
-        // Returns true if the conversion succeeds. The conversion always succeeds
-        // except for the following cases:
-        //   - the input value is special and no infinity_symbol or nan_symbol has
-        //     been provided to the constructor,
-        //   - precision < kMinPericisionDigits
-        //   - precision > kMaxPrecisionDigits
-        // The last condition implies that the result will never contain more than
-        // kMaxPrecisionDigits + 7 characters (the sign, the decimal point, the
-        // exponent character, the exponent's sign, and at most 3 exponent digits).
-        bool ToPrecision(double value,
-                         int precision,
-                         StringBuilder* result_builder) const;
-
-        enum DtoaMode {
-            // Produce the shortest correct representation.
-            // For example the output of 0.299999999999999988897 is (the less accurate
-            // but correct) 0.3.
-            SHORTEST,
-            // Produce a fixed number of digits after the decimal point.
-            // For instance fixed(0.1, 4) becomes 0.1000
-            // If the input number is big, the output will be big.
-            FIXED,
-            // Fixed number of digits (independent of the decimal point).
-            PRECISION
-        };
-
-        // The maximal number of digits that are needed to emit a double in base 10.
-        // A higher precision can be achieved by using more digits, but the shortest
-        // accurate representation of any double will never use more digits than
-        // kBase10MaximalLength.
-        // Note that DoubleToAscii null-terminates its input. So the given buffer
-        // should be at least kBase10MaximalLength + 1 characters long.
-        static const int kBase10MaximalLength = 17;
-
-        // Converts the given double 'v' to ascii.
-        // The result should be interpreted as buffer * 10^(point-length).
-        //
-        // The output depends on the given mode:
-        //  - SHORTEST: produce the least amount of digits for which the internal
-        //   identity requirement is still satisfied. If the digits are printed
-        //   (together with the correct exponent) then reading this number will give
-        //   'v' again. The buffer will choose the representation that is closest to
-        //   'v'. If there are two at the same distance, than the one farther away
-        //   from 0 is chosen (halfway cases - ending with 5 - are rounded up).
-        //   In this mode the 'requested_digits' parameter is ignored.
-        //  - FIXED: produces digits necessary to print a given number with
-        //   'requested_digits' digits after the decimal point. The produced digits
-        //   might be too short in which case the caller has to fill the remainder
-        //   with '0's.
-        //   Example: toFixed(0.001, 5) is allowed to return buffer="1", point=-2.
-        //   Halfway cases are rounded towards +/-Infinity (away from 0). The call
-        //   toFixed(0.15, 2) thus returns buffer="2", point=0.
-        //   The returned buffer may contain digits that would be truncated from the
-        //   shortest representation of the input.
-        //  - PRECISION: produces 'requested_digits' where the first digit is not '0'.
-        //   Even though the length of produced digits usually equals
-        //   'requested_digits', the function is allowed to return fewer digits, in
-        //   which case the caller has to fill the missing digits with '0's.
-        //   Halfway cases are again rounded away from 0.
-        // DoubleToAscii expects the given buffer to be big enough to hold all
-        // digits and a terminating null-character. In SHORTEST-mode it expects a
-        // buffer of at least kBase10MaximalLength + 1. In all other modes the
-        // requested_digits parameter (+ 1 for the null-character) limits the size of
-        // the output. The given length is only used in debug mode to ensure the
-        // buffer is big enough.
-        static void DoubleToAscii(double v,
-                                  DtoaMode mode,
-                                  int requested_digits,
-                                  char* buffer,
-                                  int buffer_length,
-                                  bool* sign,
-                                  int* length,
-                                  int* point);
-
-    private:
-        // If the value is a special value (NaN or Infinity) constructs the
-        // corresponding string using the configured infinity/nan-symbol.
-        // If either of them is NULL or the value is not special then the
-        // function returns false.
-        bool HandleSpecialValues(double value, StringBuilder* result_builder) const;
-        // Constructs an exponential representation (i.e. 1.234e56).
-        // The given exponent assumes a decimal point after the first decimal digit.
-        void CreateExponentialRepresentation(const char* decimal_digits,
-                                             int length,
-                                             int exponent,
-                                             StringBuilder* result_builder) const;
-        // Creates a decimal representation (i.e 1234.5678).
-        void CreateDecimalRepresentation(const char* decimal_digits,
-                                         int length,
-                                         int decimal_point,
-                                         int digits_after_point,
-                                         StringBuilder* result_builder) const;
-
-        const int flags_;
-        const char* const infinity_symbol_;
-        const char* const nan_symbol_;
-        const char exponent_character_;
-        const int decimal_in_shortest_low_;
-        const int decimal_in_shortest_high_;
-        const int max_leading_padding_zeroes_in_precision_mode_;
-        const int max_trailing_padding_zeroes_in_precision_mode_;
-
-        DISALLOW_IMPLICIT_CONSTRUCTORS(DoubleToStringConverter);
-    };
-
-
-    class StringToDoubleConverter {
-    public:
-        // Performs the conversion.
-        // The output parameter 'processed_characters_count' is set to the number
-        // of characters that have been processed to read the number.
-        static double StringToDouble(const char* buffer, size_t length, size_t* processed_characters_count);
-
-    private:
-        DISALLOW_IMPLICIT_CONSTRUCTORS(StringToDoubleConverter);
-    };
+  // Computes 'precision' leading digits of the given 'value' and returns them
+  // either in exponential or decimal format, depending on
+  // max_{leading|trailing}_padding_zeroes_in_precision_mode (given to the
+  // constructor).
+  // The last computed digit is rounded.
+  //
+  // Example with max_leading_padding_zeroes_in_precision_mode = 6.
+  //   ToPrecision(0.0000012345, 2) -> "0.0000012"
+  //   ToPrecision(0.00000012345, 2) -> "1.2e-7"
+  // Similarily the converter may add up to
+  // max_trailing_padding_zeroes_in_precision_mode in precision mode to avoid
+  // returning an exponential representation. A zero added by the
+  // EMIT_TRAILING_ZERO_AFTER_POINT flag is counted for this limit.
+  // Examples for max_trailing_padding_zeroes_in_precision_mode = 1:
+  //   ToPrecision(230.0, 2) -> "230"
+  //   ToPrecision(230.0, 2) -> "230."  with EMIT_TRAILING_DECIMAL_POINT.
+  //   ToPrecision(230.0, 2) -> "2.3e2" with EMIT_TRAILING_ZERO_AFTER_POINT.
+  // Examples for max_trailing_padding_zeroes_in_precision_mode = 3, and no
+  //    EMIT_TRAILING_ZERO_AFTER_POINT:
+  //   ToPrecision(123450.0, 6) -> "123450"
+  //   ToPrecision(123450.0, 5) -> "123450"
+  //   ToPrecision(123450.0, 4) -> "123500"
+  //   ToPrecision(123450.0, 3) -> "123000"
+  //   ToPrecision(123450.0, 2) -> "1.2e5"
+  //
+  // Returns true if the conversion succeeds. The conversion always succeeds
+  // except for the following cases:
+  //   - the input value is special and no infinity_symbol or nan_symbol has
+  //     been provided to the constructor,
+  //   - precision < kMinPericisionDigits
+  //   - precision > kMaxPrecisionDigits
+  // The last condition implies that the result will never contain more than
+  // kMaxPrecisionDigits + 7 characters (the sign, the decimal point, the
+  // exponent character, the exponent's sign, and at most 3 exponent digits).
+  bool ToPrecision(double value,
+                   int precision,
+                   StringBuilder* result_builder) const;
+
+  enum DtoaMode {
+    // Produce the shortest correct representation.
+    // For example the output of 0.299999999999999988897 is (the less accurate
+    // but correct) 0.3.
+    SHORTEST,
+    // Produce a fixed number of digits after the decimal point.
+    // For instance fixed(0.1, 4) becomes 0.1000
+    // If the input number is big, the output will be big.
+    FIXED,
+    // Fixed number of digits (independent of the decimal point).
+    PRECISION
+  };
+
+  // The maximal number of digits that are needed to emit a double in base 10.
+  // A higher precision can be achieved by using more digits, but the shortest
+  // accurate representation of any double will never use more digits than
+  // kBase10MaximalLength.
+  // Note that DoubleToAscii null-terminates its input. So the given buffer
+  // should be at least kBase10MaximalLength + 1 characters long.
+  static const int kBase10MaximalLength = 17;
+
+  // Converts the given double 'v' to ascii.
+  // The result should be interpreted as buffer * 10^(point-length).
+  //
+  // The output depends on the given mode:
+  //  - SHORTEST: produce the least amount of digits for which the internal
+  //   identity requirement is still satisfied. If the digits are printed
+  //   (together with the correct exponent) then reading this number will give
+  //   'v' again. The buffer will choose the representation that is closest to
+  //   'v'. If there are two at the same distance, than the one farther away
+  //   from 0 is chosen (halfway cases - ending with 5 - are rounded up).
+  //   In this mode the 'requested_digits' parameter is ignored.
+  //  - FIXED: produces digits necessary to print a given number with
+  //   'requested_digits' digits after the decimal point. The produced digits
+  //   might be too short in which case the caller has to fill the remainder
+  //   with '0's.
+  //   Example: toFixed(0.001, 5) is allowed to return buffer="1", point=-2.
+  //   Halfway cases are rounded towards +/-Infinity (away from 0). The call
+  //   toFixed(0.15, 2) thus returns buffer="2", point=0.
+  //   The returned buffer may contain digits that would be truncated from the
+  //   shortest representation of the input.
+  //  - PRECISION: produces 'requested_digits' where the first digit is not '0'.
+  //   Even though the length of produced digits usually equals
+  //   'requested_digits', the function is allowed to return fewer digits, in
+  //   which case the caller has to fill the missing digits with '0's.
+  //   Halfway cases are again rounded away from 0.
+  // DoubleToAscii expects the given buffer to be big enough to hold all
+  // digits and a terminating null-character. In SHORTEST-mode it expects a
+  // buffer of at least kBase10MaximalLength + 1. In all other modes the
+  // requested_digits parameter (+ 1 for the null-character) limits the size of
+  // the output. The given length is only used in debug mode to ensure the
+  // buffer is big enough.
+  static void DoubleToAscii(double v,
+                            DtoaMode mode,
+                            int requested_digits,
+                            char* buffer,
+                            int buffer_length,
+                            bool* sign,
+                            int* length,
+                            int* point);
+
+ private:
+  // If the value is a special value (NaN or Infinity) constructs the
+  // corresponding string using the configured infinity/nan-symbol.
+  // If either of them is NULL or the value is not special then the
+  // function returns false.
+  bool HandleSpecialValues(double value, StringBuilder* result_builder) const;
+  // Constructs an exponential representation (i.e. 1.234e56).
+  // The given exponent assumes a decimal point after the first decimal digit.
+  void CreateExponentialRepresentation(const char* decimal_digits,
+                                       int length,
+                                       int exponent,
+                                       StringBuilder* result_builder) const;
+  // Creates a decimal representation (i.e 1234.5678).
+  void CreateDecimalRepresentation(const char* decimal_digits,
+                                   int length,
+                                   int decimal_point,
+                                   int digits_after_point,
+                                   StringBuilder* result_builder) const;
+
+  const int flags_;
+  const char* const infinity_symbol_;
+  const char* const nan_symbol_;
+  const char exponent_character_;
+  const int decimal_in_shortest_low_;
+  const int decimal_in_shortest_high_;
+  const int max_leading_padding_zeroes_in_precision_mode_;
+  const int max_trailing_padding_zeroes_in_precision_mode_;
+
+  DISALLOW_IMPLICIT_CONSTRUCTORS(DoubleToStringConverter);
+};
+
+class StringToDoubleConverter {
+ public:
+  // Performs the conversion.
+  // The output parameter 'processed_characters_count' is set to the number
+  // of characters that have been processed to read the number.
+  static double StringToDouble(const char* buffer,
+                               size_t length,
+                               size_t* processed_characters_count);
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(StringToDoubleConverter);
+};
 
 }  // namespace double_conversion
 
-} // namespace WTF
+}  // namespace WTF
 
 #endif  // DOUBLE_CONVERSION_DOUBLE_CONVERSION_H_