diff options
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/func.sgml | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml index 9c6107f9604..15314aa3ee5 100644 --- a/doc/src/sgml/func.sgml +++ b/doc/src/sgml/func.sgml @@ -1289,6 +1289,41 @@ repeat('Pg', 4) <returnvalue>PgPgPgPg</returnvalue> <row> <entry role="func_table_entry"><para role="func_signature"> <indexterm> + <primary>erf</primary> + </indexterm> + <function>erf</function> ( <type>double precision</type> ) + <returnvalue>double precision</returnvalue> + </para> + <para> + Error function + </para> + <para> + <literal>erf(1.0)</literal> + <returnvalue>0.8427007929497149</returnvalue> + </para></entry> + </row> + + <row> + <entry role="func_table_entry"><para role="func_signature"> + <indexterm> + <primary>erfc</primary> + </indexterm> + <function>erfc</function> ( <type>double precision</type> ) + <returnvalue>double precision</returnvalue> + </para> + <para> + Complementary error function (<literal>1 - erf(x)</literal>, without + loss of precision for large inputs) + </para> + <para> + <literal>erfc(1.0)</literal> + <returnvalue>0.15729920705028513</returnvalue> + </para></entry> + </row> + + <row> + <entry role="func_table_entry"><para role="func_signature"> + <indexterm> <primary>exp</primary> </indexterm> <function>exp</function> ( <type>numeric</type> ) |