pgsql: Add documentation and regression tests concerning rounding of nu

Add documentation and regression tests concerning rounding of numerics.

Michael Paquier, reviewed by Fabien Coelho

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/5e7c3d91bf24a212b42c912234c6cb37d75e0292

Modified Files
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doc/src/sgml/datatype.sgml | 25 ++++++++++++++++++++
src/test/regress/expected/int2.out | 20 ++++++++++++++++
src/test/regress/expected/int4.out | 20 ++++++++++++++++
.../regress/expected/int8-exp-three-digits.out | 20 ++++++++++++++++
src/test/regress/expected/int8.out | 20 ++++++++++++++++
src/test/regress/expected/numeric.out | 24 +++++++++++++++++++
src/test/regress/sql/int2.sql | 10 ++++++++
src/test/regress/sql/int4.sql | 10 ++++++++
src/test/regress/sql/int8.sql | 10 ++++++++
src/test/regress/sql/numeric.sql | 10 ++++++++
10 files changed, 169 insertions(+)

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