<term><function>PGTYPESnumeric_from_long</function></term>
     <listitem>
      <para>
       Convert a long int variable to a numeric variable.
<synopsis>
int PGTYPESnumeric_from_long(signed long int long_val, numeric *var);
</synopsis>
       This function accepts a variable of type signed long int and stores it
       in the numeric variable <literal>var</literal>. Upon success, 0 is returned and
       -1 in case of a failure.
      </para>
     </listitem>
    </varlistentry>

    <varlistentry id="ecpg-pgtypes-numeric-copy">
     <term><function>PGTYPESnumeric_copy</function></term>
     <listitem>
      <para>
       Copy over one numeric variable into another one.
<synopsis>
int PGTYPESnumeric_copy(numeric *src, numeric *dst);
</synopsis>
       This function copies over the value of the variable that
       <literal>src</literal> points to into the variable that <literal>dst</literal>
       points to. It returns 0 on success and -1 if an error occurs.
      </para>
     </listitem>
    </varlistentry>

    <varlistentry id="ecpg-pgtypes-numeric-from-double">
     <term><function>PGTYPESnumeric_from_double</function></term>
     <listitem>
      <para>
       Convert a variable of type double to a numeric.
<synopsis>
int  PGTYPESnumeric_from_double(double d, numeric *dst);
</synopsis>
       This function accepts a variable of type double and stores the result
       in the variable that <literal>dst</literal> points to. It returns 0 on success
       and -1 if an error occurs.
      </para>
     </listitem>
    </varlistentry>

    <varlistentry id="ecpg-pgtypes-numeric-to-double">
     <term><function>PGTYPESnumeric_to_double</function></term>
     <listitem>
      <para>
       Convert a variable of type numeric to double.
<synopsis>
int PGTYPESnumeric_to_double(numeric *nv, double *dp)
</synopsis>
       The function converts the numeric value from the variable that
       <literal>nv</literal> points to into the double variable that <literal>dp</literal> points
       to. It returns 0 on success and -1 if an error occurs, including
       overflow. On overflow, the global variable <literal>errno</literal> will be set
       to <literal>PGTYPES_NUM_OVERFLOW</literal> additionally.
      </para>
     </listitem>
    </varlistentry>

    <varlistentry id="ecpg-pgtypes-numeric-to-int">
     <term><function>PGTYPESnumeric_to_int</function></term>
     <listitem>
      <para>
       Convert a variable of type numeric to int.
<synopsis>
int PGTYPESnumeric_to_int(numeric *nv, int *ip);
</synopsis>
       The function converts the numeric value from the variable that
       <literal>nv</literal> points to into the integer variable that <literal>ip</literal>
       points to. It returns 0 on success and -1 if an error occurs, including
       overflow. On overflow, the global variable <literal>errno</literal> will be set
       to <literal>PGTYPES_NUM_OVERFLOW</literal> additionally.
      </para>
     </listitem>
    </varlistentry>

    <varlistentry id="ecpg-pgtypes-numeric-to-long">
     <term><function>PGTYPESnumeric_to_long</function></term>
     <listitem>
      <para>
       Convert a variable of type numeric to long.
<synopsis>
int PGTYPESnumeric_to_long(numeric *nv, long *lp);
</synopsis>
       The function converts the numeric value from the variable that
       <literal>nv</literal> points to into the long integer variable that
       <literal>lp</literal> points to. It returns 0 on success and -1 if an error
       occurs, including overflow and underflow. On overflow, the global variable
       <literal>errno</literal> will be set to <literal>PGTYPES_NUM_OVERFLOW</literal>
       and on underflow <literal>errno</literal> will be set to
       <literal>PGTYPES_NUM_UNDERFLOW</literal>.
      </para>
     </listitem>
    </varlistentry>

    <varlistentry id="ecpg-pgtypes-numeric-to-decimal">
     <term><function>PGTYPESnumeric_to_decimal</function></term>
     <listitem>
      <para>
       Convert a variable