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Ensure full precision of doubles is saved to SQL.

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std::iostream's operator<<(double) uses only 6 digits of precision
by default. We want 12 digits when saving.
This commit is contained in:
John Ralls 2018-06-02 16:20:36 -07:00
parent 9db60ca63c
commit 537fd995a3
1 changed files with 31 additions and 0 deletions
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31
libgnucash/backend/sql/gnc-sql-column-table-entry.hpp
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@ -31,6 +31,8 @@ extern "C"
#include <memory>
#include <vector>
#include <iostream>
#include <iomanip>
#include "gnc-sql-result.hpp"
struct GncSqlColumnInfo;
@ -384,6 +386,22 @@ GncSqlColumnTableEntry::add_value_to_vec(QofIdTypeConst obj_name,
}
}
template <> inline void
GncSqlColumnTableEntry::add_value_to_vec<double*>(QofIdTypeConst obj_name,
const void* pObject,
PairVec& vec, std::true_type) const
{
double* s = get_row_value_from_object<double*>(obj_name, pObject);
if (s != nullptr)
{
std::ostringstream stream;
stream << std::setprecision(12) << std::fixed << *s;
vec.emplace_back(std::make_pair(std::string{m_col_name}, stream.str()));
return;
}
}
template <typename T> void
GncSqlColumnTableEntry::add_value_to_vec(QofIdTypeConst obj_name,
const void* pObject,
@ -397,6 +415,19 @@ GncSqlColumnTableEntry::add_value_to_vec(QofIdTypeConst obj_name,
return;
}
template <> inline void
GncSqlColumnTableEntry::add_value_to_vec<double>(QofIdTypeConst obj_name,
const void* pObject,
PairVec& vec, std::false_type) const
{
double s = *get_row_value_from_object<double*>(obj_name, pObject);
std::ostringstream stream;
stream << std::setprecision(12) << std::fixed << s;
vec.emplace_back(std::make_pair(std::string{m_col_name}, stream.str()));
return;
}
/**
* Load an arbitrary object from a result row.
*