text: --
  -- FLOAT8
  --
  
  CREATE TABLE FLOAT8_TBL(f1 float8);
  
  INSERT INTO FLOAT8_TBL(f1) VALUES ('    0.0   ');
  INSERT INTO FLOAT8_TBL(f1) VALUES ('1004.30  ');
  INSERT INTO FLOAT8_TBL(f1) VALUES ('   -34.84');
  INSERT INTO FLOAT8_TBL(f1) VALUES ('1.2345678901234e+200');
  INSERT INTO FLOAT8_TBL(f1) VALUES ('1.2345678901234e-200');
  
  -- test for underflow and overflow handling
  SELECT '10e400'::float8;
  SELECT '-10e400'::float8;
  SELECT '10e-400'::float8;
  SELECT '-10e-400'::float8;
  
  -- bad input
  INSERT INTO FLOAT8_TBL(f1) VALUES ('');
  INSERT INTO FLOAT8_TBL(f1) VALUES ('     ');
  INSERT INTO FLOAT8_TBL(f1) VALUES ('xyz');
  INSERT INTO FLOAT8_TBL(f1) VALUES ('5.0.0');
  INSERT INTO FLOAT8_TBL(f1) VALUES ('5 . 0');
  INSERT INTO FLOAT8_TBL(f1) VALUES ('5.   0');
  INSERT INTO FLOAT8_TBL(f1) VALUES ('    - 3');
  INSERT INTO FLOAT8_TBL(f1) VALUES ('123           5');
  
  -- special inputs
  SELECT 'NaN'::float8;
  SELECT 'nan'::float8;
  SELECT '   NAN  '::float8;
  SELECT 'infinity'::float8;
  SELECT '          -INFINiTY   '::float8;
  -- bad special inputs
  SELECT 'N A N'::float8;
  SELECT 'NaN x'::float8;
  SELECT ' INFINITY    x'::float8;
  
  SELECT 'Infinity'::float8 + 100.0;
  SELECT 'Infinity'::float8 / 'Infinity'::float8;
  SELECT 'nan'::float8 / 'nan'::float8;
  SELECT 'nan'::numeric::float8;
  
  SELECT '' AS five, * FROM FLOAT8_TBL;
  
  SELECT '' AS four, f.* FROM FLOAT8_TBL f WHERE f.f1 <> '1004.3';
  
  SELECT '' AS one, f.* FROM FLOAT8_TBL f WHERE f.f1 = '1004.3';
  
  SELECT '' AS three, f.* FROM FLOAT8_TBL f WHERE '1004.3' > f.f1;
  
  SELECT '' AS three, f.* FROM FLOAT8_TBL f WHERE  f.f1 < '1004.3';
  
  SELECT '' AS four, f.* FROM FLOAT8_TBL f WHERE '1004.3' >= f.f1;
  
  SELECT '' AS four, f.* FROM FLOAT8_TBL f WHERE  f.f1 <= '1004.3';
  
  SELECT '' AS three, f.f1, f.f1 * '-10' AS x
     FROM FLOAT8_TBL f
     WHERE f.f1 > '0.0';
  
  SELECT '' AS three, f.f1, f.f1 + '-10' AS x
     FROM FLOAT8_TBL f
     WHERE f.f1 > '0.0';
  
  SELECT '' AS three, f.f1, f.f1 / '-10' AS x
     FROM FLOAT8_TBL f
     WHERE f.f1 > '0.0';
  
  SELECT '' AS three, f.f1, f.f1 - '-10' AS x
     FROM FLOAT8_TBL f
     WHERE f.f1 > '0.0';
  
  SELECT '' AS one, f.f1 ^ '2.0' AS square_f1
     FROM FLOAT8_TBL f where f.f1 = '1004.3';
  
  -- absolute value
  SELECT '' AS five, f.f1, @f.f1 AS abs_f1
     FROM FLOAT8_TBL f;
  
  -- truncate
  SELECT '' AS five, f.f1, trunc(f.f1) AS trunc_f1
     FROM FLOAT8_TBL f;
  
  -- round
  SELECT '' AS five, f.f1, round(f.f1) AS round_f1
     FROM FLOAT8_TBL f;
  
  -- ceil / ceiling
  select ceil(f1) as ceil_f1 from float8_tbl f;
  select ceiling(f1) as ceiling_f1 from float8_tbl f;
  
  -- floor
  select floor(f1) as floor_f1 from float8_tbl f;
  
  -- sign
  select sign(f1) as sign_f1 from float8_tbl f;
  
  -- square root
  SELECT sqrt(float8 '64') AS eight;
  
  SELECT |/ float8 '64' AS eight;
  
  SELECT '' AS three, f.f1, |/f.f1 AS sqrt_f1
     FROM FLOAT8_TBL f
     WHERE f.f1 > '0.0';
  
  -- power
  SELECT power(float8 '144', float8 '0.5');
  
  -- take exp of ln(f.f1)
  SELECT '' AS three, f.f1, exp(ln(f.f1)) AS exp_ln_f1
     FROM FLOAT8_TBL f
     WHERE f.f1 > '0.0';
  
  -- cube root
  SELECT ||/ float8 '27' AS three;
  
  SELECT '' AS five, f.f1, ||/f.f1 AS cbrt_f1 FROM FLOAT8_TBL f;
  
  
  SELECT '' AS five, * FROM FLOAT8_TBL;
  
  UPDATE FLOAT8_TBL
     SET f1 = FLOAT8_TBL.f1 * '-1'
     WHERE FLOAT8_TBL.f1 > '0.0';
  
  SELECT '' AS bad, f.f1 * '1e200' from FLOAT8_TBL f;
  
  SELECT '' AS bad, f.f1 ^ '1e200' from FLOAT8_TBL f;
  
  SELECT 0 ^ 0 + 0 ^ 1 + 0 ^ 0.0 + 0 ^ 0.5;
  
  SELECT '' AS bad, ln(f.f1) from FLOAT8_TBL f where f.f1 = '0.0' ;
  
  SELECT '' AS bad, ln(f.f1) from FLOAT8_TBL f where f.f1 < '0.0' ;
  
  SELECT '' AS bad, exp(f.f1) from FLOAT8_TBL f;
  
  SELECT '' AS bad, f.f1 / '0.0' from FLOAT8_TBL f;
  
  SELECT '' AS five, * FROM FLOAT8_TBL;
  
  -- test for over- and underflow
  INSERT INTO FLOAT8_TBL(f1) VALUES ('10e400');
  
  INSERT INTO FLOAT8_TBL(f1) VALUES ('-10e400');
  
  INSERT INTO FLOAT8_TBL(f1) VALUES ('10e-400');
  
  INSERT INTO FLOAT8_TBL(f1) VALUES ('-10e-400');
  
  -- maintain external table consistency across platforms
  -- delete all values and reinsert well-behaved ones
  
  DELETE FROM FLOAT8_TBL;
  
  INSERT INTO FLOAT8_TBL(f1) VALUES ('0.0');
  
  INSERT INTO FLOAT8_TBL(f1) VALUES ('-34.84');
  
  INSERT INTO FLOAT8_TBL(f1) VALUES ('-1004.30');
  
  INSERT INTO FLOAT8_TBL(f1) VALUES ('-1.2345678901234e+200');
  
  INSERT INTO FLOAT8_TBL(f1) VALUES ('-1.2345678901234e-200');
  
  SELECT '' AS five, * FROM FLOAT8_TBL;
  
  -- test exact cases for trigonometric functions in degrees
  SET extra_float_digits = 3;
  
  SELECT x,
         sind(x),
         sind(x) IN (-1,-0.5,0,0.5,1) AS sind_exact
  FROM (VALUES (0), (30), (90), (150), (180),
        (210), (270), (330), (360)) AS t(x);
  
  SELECT x,
         cosd(x),
         cosd(x) IN (-1,-0.5,0,0.5,1) AS cosd_exact
  FROM (VALUES (0), (60), (90), (120), (180),
        (240), (270), (300), (360)) AS t(x);
  
  SELECT x,
         tand(x),
         tand(x) IN ('-Infinity'::float8,-1,0,
                     1,'Infinity'::float8) AS tand_exact,
         cotd(x),
         cotd(x) IN ('-Infinity'::float8,-1,0,
                     1,'Infinity'::float8) AS cotd_exact
  FROM (VALUES (0), (45), (90), (135), (180),
        (225), (270), (315), (360)) AS t(x);
  
  SELECT x,
         asind(x),
         asind(x) IN (-90,-30,0,30,90) AS asind_exact,
         acosd(x),
         acosd(x) IN (0,60,90,120,180) AS acosd_exact
  FROM (VALUES (-1), (-0.5), (0), (0.5), (1)) AS t(x);
  
  SELECT x,
         atand(x),
         atand(x) IN (-90,-45,0,45,90) AS atand_exact
  FROM (VALUES ('-Infinity'::float8), (-1), (0), (1),
        ('Infinity'::float8)) AS t(x);
  
  SELECT x, y,
         atan2d(y, x),
         atan2d(y, x) IN (-90,0,90,180) AS atan2d_exact
  FROM (SELECT 10*cosd(a), 10*sind(a)
        FROM generate_series(0, 360, 90) AS t(a)) AS t(x,y);
  
  RESET extra_float_digits;
  