FIX::double_conversion::PowersOfTenCache Class Reference

Static Public Member Functions
static void	GetCachedPowerForBinaryExponentRange (int min_exponent, int max_exponent, DiyFp *power, int *decimal_exponent)
static void	GetCachedPowerForDecimalExponent (int requested_exponent, DiyFp *power, int *found_exponent)

Static Public Attributes
static const int	kDecimalExponentDistance = 8
static const int	kMinDecimalExponent = -348
static const int	kMaxDecimalExponent = 340

Detailed Description

Definition at line 35 of file FieldConvertors.cpp.

Member Function Documentation

GetCachedPowerForBinaryExponentRange()

void FIX::double_conversion::PowersOfTenCache::GetCachedPowerForBinaryExponentRange ( int min_exponent, int max_exponent, DiyFp * power, int * decimal_exponent )

static

Definition at line 142 of file FieldConvertors.cpp.

{
 
// we include "double-conversion" project in FIX namespace
// to avoid linking errors if quickfix is linked statically
// and "double-conversion" is already used by target project
 
#include "double-conversion/diy-fp.cc"
#include "double-conversion/fixed-dtoa.cc"
#include "double-conversion/bignum.cc"
#include "double-conversion/bignum-dtoa.cc"
#include "double-conversion/cached-powers.cc"
#include "double-conversion/fast-dtoa.cc"
#include "double-conversion/strtod.cc"
#include "double-conversion/double-conversion.cc"
 
  static double_conversion::DoubleToStringConverter g_dtoa_converter(
    double_conversion::DoubleToStringConverter::NO_FLAGS,
    "INF",
    "NAN",
    'e',
    -DoubleConvertor::SIGNIFICANT_DIGITS,
    DoubleConvertor::SIGNIFICANT_DIGITS,
    DoubleConvertor::SIGNIFICANT_DIGITS - 1,
    0);
 
  static double_conversion::StringToDoubleConverter g_atod_converter(
          double_conversion::StringToDoubleConverter::NO_FLAGS,
          std::numeric_limits<double>::quiet_NaN(),
          std::numeric_limits<double>::quiet_NaN(),
          "INF",
          "NAN");
 
  double DoubleConvertor::fast_strtod( const char * buffer, int size, int * processed_chars )
  {
          return g_atod_converter.StringToDouble( buffer, size, processed_chars );
  }
 
  int DoubleConvertor::fast_dtoa( char * buffer, int size, double value )
  {
    double_conversion::StringBuilder builder( buffer, size );
    if( !g_dtoa_converter.ToPrecision( value, DoubleConvertor::SIGNIFICANT_DIGITS, &builder ) )
    {
      builder.Reset();
      return 0;
    }
 
    builder.TrimTrailingZeros();
    return builder.position();
  }
 
  int DoubleConvertor::fast_fixed_dtoa( char * buffer, int size, double value )
  {
    double_conversion::StringBuilder builder( buffer, size );
    if( !g_dtoa_converter.ToFixed( value, DoubleConvertor::SIGNIFICANT_DIGITS, &builder ) )
    {
      builder.Reset();
      return 0;
    }
 
    return builder.position();
  }
 
}

GetCachedPowerForDecimalExponent()

void FIX::double_conversion::PowersOfTenCache::GetCachedPowerForDecimalExponent ( int requested_exponent, DiyFp * power, int * found_exponent )

static

Definition at line 162 of file FieldConvertors.cpp.

{
 
// we include "double-conversion" project in FIX namespace
// to avoid linking errors if quickfix is linked statically
// and "double-conversion" is already used by target project
 
#include "double-conversion/diy-fp.cc"
#include "double-conversion/fixed-dtoa.cc"
#include "double-conversion/bignum.cc"
#include "double-conversion/bignum-dtoa.cc"
#include "double-conversion/cached-powers.cc"
#include "double-conversion/fast-dtoa.cc"
#include "double-conversion/strtod.cc"
#include "double-conversion/double-conversion.cc"
 
  static double_conversion::DoubleToStringConverter g_dtoa_converter(
    double_conversion::DoubleToStringConverter::NO_FLAGS,
    "INF",
    "NAN",
    'e',
    -DoubleConvertor::SIGNIFICANT_DIGITS,
    DoubleConvertor::SIGNIFICANT_DIGITS,
    DoubleConvertor::SIGNIFICANT_DIGITS - 1,
    0);
 
  static double_conversion::StringToDoubleConverter g_atod_converter(
          double_conversion::StringToDoubleConverter::NO_FLAGS,
          std::numeric_limits<double>::quiet_NaN(),
          std::numeric_limits<double>::quiet_NaN(),
          "INF",
          "NAN");
 
  double DoubleConvertor::fast_strtod( const char * buffer, int size, int * processed_chars )
  {
          return g_atod_converter.StringToDouble( buffer, size, processed_chars );
  }
 
  int DoubleConvertor::fast_dtoa( char * buffer, int size, double value )
  {
    double_conversion::StringBuilder builder( buffer, size );
    if( !g_dtoa_converter.ToPrecision( value, DoubleConvertor::SIGNIFICANT_DIGITS, &builder ) )
    {
      builder.Reset();
      return 0;
    }
 
    builder.TrimTrailingZeros();
    return builder.position();
  }
 
  int DoubleConvertor::fast_fixed_dtoa( char * buffer, int size, double value )
  {
    double_conversion::StringBuilder builder( buffer, size );
    if( !g_dtoa_converter.ToFixed( value, DoubleConvertor::SIGNIFICANT_DIGITS, &builder ) )
    {
      builder.Reset();
      return 0;
    }
 
    return builder.position();
  }
 
}

Member Data Documentation

kDecimalExponentDistance

const int FIX::double_conversion::PowersOfTenCache::kDecimalExponentDistance = 8

static

Definition at line 40 of file FieldConvertors.cpp.

kMaxDecimalExponent

const int FIX::double_conversion::PowersOfTenCache::kMaxDecimalExponent = 340

static

Definition at line 43 of file FieldConvertors.cpp.

kMinDecimalExponent

const int FIX::double_conversion::PowersOfTenCache::kMinDecimalExponent = -348

static

Definition at line 42 of file FieldConvertors.cpp.

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The documentation for this class was generated from the following file:

• FieldConvertors.cpp