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// file : xsde/cxx/serializer/non-validating/double.cxx
// author : Boris Kolpackov <boris@codesynthesis.com>
// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
// license : GNU GPL v2 + exceptions; see accompanying LICENSE file
#include <stdio.h> // sprintf/snprintf
#include <xsde/cxx/serializer/non-validating/double.hxx>
namespace xsde
{
namespace cxx
{
namespace serializer
{
namespace non_validating
{
void double_simpl::
pre (double value)
{
value_ = value;
}
void double_simpl::
_serialize_content ()
{
// Assume double values cannot be longer than 127 characters.
//
char str[128];
const char* fmt = 0;
switch (notation_)
{
case notation_auto:
{
fmt = "%.*g";
break;
}
case notation_fixed:
{
fmt = "%.*f";
break;
}
case notation_scientific:
{
fmt = "%.*e";
break;
}
}
#ifdef XSDE_SNPRINTF
int n = snprintf (str, 128, fmt, precision_, value_);
#else
int n = sprintf (str, fmt, precision_, value_);
#endif
if (n > 0 && n < 128)
{
if (str[0] == '-')
{
if (str[1] == 'n' && str[2] == 'a' && str[3] == 'n')
{
_characters ("NaN", 3);
return;
}
else if (str[1] == 'i' && str[2] == 'n' && str[3] == 'f')
{
_characters ("-INF", 4);
return;
}
}
else
{
if (str[0] == 'n' && str[1] == 'a' && str[2] == 'n')
{
_characters ("NaN", 3);
return;
}
else if (str[0] == 'i' && str[1] == 'n' && str[2] == 'f')
{
_characters ("INF", 3);
return;
}
}
if (notation_ == notation_fixed)
{
// Remove trailing '0' and '.' if necessary.
//
while (str[n - 1] == '0')
n--;
if (str[n - 1] == '.')
n--;
}
_characters (str, static_cast<size_t> (n));
}
}
}
}
}
}
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