-- -- FLOAT4 -- CREATE TABLE FLOAT4_TBL (f1 float4); INSERT INTO FLOAT4_TBL(f1) VALUES (' 0.0'); INSERT INTO FLOAT4_TBL(f1) VALUES ('1004.30 '); INSERT INTO FLOAT4_TBL(f1) VALUES (' -34.84 '); INSERT INTO FLOAT4_TBL(f1) VALUES ('1.2345678901234e+20'); INSERT INTO FLOAT4_TBL(f1) VALUES ('1.2345678901234e-20'); -- test for over and under flow INSERT INTO FLOAT4_TBL(f1) VALUES ('10e70'); INSERT INTO FLOAT4_TBL(f1) VALUES ('-10e70'); INSERT INTO FLOAT4_TBL(f1) VALUES ('10e-70'); INSERT INTO FLOAT4_TBL(f1) VALUES ('-10e-70'); -- bad input INSERT INTO FLOAT4_TBL(f1) VALUES (''); INSERT INTO FLOAT4_TBL(f1) VALUES (' '); INSERT INTO FLOAT4_TBL(f1) VALUES ('xyz'); INSERT INTO FLOAT4_TBL(f1) VALUES ('5.0.0'); INSERT INTO FLOAT4_TBL(f1) VALUES ('5 . 0'); INSERT INTO FLOAT4_TBL(f1) VALUES ('5. 0'); INSERT INTO FLOAT4_TBL(f1) VALUES (' - 3.0'); INSERT INTO FLOAT4_TBL(f1) VALUES ('123 5'); -- special inputs SELECT 'NaN'::float4; SELECT 'nan'::float4; SELECT ' NAN '::float4; SELECT 'infinity'::float4; SELECT ' -INFINiTY '::float4; -- bad special inputs SELECT 'N A N'::float4; SELECT 'NaN x'::float4; SELECT ' INFINITY x'::float4; SELECT 'Infinity'::float4 + 100.0; SELECT 'Infinity'::float4 / 'Infinity'::float4; SELECT 'nan'::float4 / 'nan'::float4; SELECT 'nan'::numeric::float4; SELECT '' AS five, * FROM FLOAT4_TBL; SELECT '' AS four, f.* FROM FLOAT4_TBL f WHERE f.f1 <> '1004.3'; SELECT '' AS one, f.* FROM FLOAT4_TBL f WHERE f.f1 = '1004.3'; SELECT '' AS three, f.* FROM FLOAT4_TBL f WHERE '1004.3' > f.f1; SELECT '' AS three, f.* FROM FLOAT4_TBL f WHERE f.f1 < '1004.3'; SELECT '' AS four, f.* FROM FLOAT4_TBL f WHERE '1004.3' >= f.f1; SELECT '' AS four, f.* FROM FLOAT4_TBL f WHERE f.f1 <= '1004.3'; SELECT '' AS three, f.f1, f.f1 * '-10' AS x FROM FLOAT4_TBL f WHERE f.f1 > '0.0'; SELECT '' AS three, f.f1, f.f1 + '-10' AS x FROM FLOAT4_TBL f WHERE f.f1 > '0.0'; SELECT '' AS three, f.f1, f.f1 / '-10' AS x FROM FLOAT4_TBL f WHERE f.f1 > '0.0'; SELECT '' AS three, f.f1, f.f1 - '-10' AS x FROM FLOAT4_TBL f WHERE f.f1 > '0.0'; -- test divide by zero SELECT '' AS bad, f.f1 / '0.0' from FLOAT4_TBL f; SELECT '' AS five, * FROM FLOAT4_TBL; -- test the unary float4abs operator SELECT '' AS five, f.f1, @f.f1 AS abs_f1 FROM FLOAT4_TBL f; UPDATE FLOAT4_TBL SET f1 = FLOAT4_TBL.f1 * '-1' WHERE FLOAT4_TBL.f1 > '0.0'; SELECT '' AS five, * FROM FLOAT4_TBL; -- test edge-case coercions to integer SELECT '32767.4'::float4::int2; SELECT '32767.6'::float4::int2; SELECT '-32768.4'::float4::int2; SELECT '-32768.6'::float4::int2; SELECT '2147483520'::float4::int4; SELECT '2147483647'::float4::int4; SELECT '-2147483648.5'::float4::int4; SELECT '-2147483900'::float4::int4; SELECT '9223369837831520256'::float4::int8; SELECT '9223372036854775807'::float4::int8; SELECT '-9223372036854775808.5'::float4::int8; SELECT '-9223380000000000000'::float4::int8;