third_party/WebKit/Source/wtf/dtoa/fixed-dtoa.h

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  27
  28 #ifndef DOUBLE_CONVERSION_FIXED_DTOA_H_
  29 #define DOUBLE_CONVERSION_FIXED_DTOA_H_
  30
  31 #include "utils.h"
  32
  33 namespace WTF {
  34
  35 namespace double_conversion {
  36
  37     // Produces digits necessary to print a given number with
  38     // 'fractional_count' digits after the decimal point.
  39     // The buffer must be big enough to hold the result plus one terminating null
  40     // character.
  41     //
  42     // The produced digits might be too short in which case the caller has to fill
  43     // the gaps with '0's.
  44     // Example: FastFixedDtoa(0.001, 5, ...) is allowed to return buffer = "1", and
  45     // decimal_point = -2.
  46     // Halfway cases are rounded towards +/-Infinity (away from 0). The call
  47     // FastFixedDtoa(0.15, 2, ...) thus returns buffer = "2", decimal_point = 0.
  48     // The returned buffer may contain digits that would be truncated from the
  49     // shortest representation of the input.
  50     //
  51     // This method only works for some parameters. If it can't handle the input it
  52     // returns false. The output is null-terminated when the function succeeds.
  53     bool FastFixedDtoa(double v, int fractional_count,
  54                        Vector<char> buffer, int* length, int* decimal_point);
  55
  56 }  // namespace double_conversion
  57
  58 } // namespace WTF
  59
  60 #endif  // DOUBLE_CONVERSION_FIXED_DTOA_H_