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select 'sqrt(4 m^2)'::unit;
unit
------
2 m
(1 row)
select 'sqrt(-4 m^2)'::unit;
ERROR: cannot take square root of a negative-valued unit
LINE 1: select 'sqrt(-4 m^2)'::unit;
^
select 'sqrt(4 m^3)'::unit;
ERROR: cannot take square root of a unit with odd "m" exponent
LINE 1: select 'sqrt(4 m^3)'::unit;
^
select 'exp(1)'::unit;
unit
------------------
2.71828182845905
(1 row)
select 'exp(1 A)'::unit;
ERROR: cannot take base-e exponent of value that is not dimension-less
LINE 1: select 'exp(1 A)'::unit;
^
select 'ln(2.7)'::unit;
unit
-------------------
0.993251773010283
(1 row)
select 'ln(-2.7)'::unit;
ERROR: cannot take ln of a negative-valued unit
LINE 1: select 'ln(-2.7)'::unit;
^
select 'ln(2.7 s)'::unit;
ERROR: cannot take ln of value that is not dimension-less
LINE 1: select 'ln(2.7 s)'::unit;
^
select 'asin(1)'::unit;
unit
-----------------
1.5707963267949
(1 row)
select 'asin(2)'::unit;
ERROR: cannot asin of values outside the range -1 to 1
LINE 1: select 'asin(2)'::unit;
^
select 'asin(1 kg)'::unit;
ERROR: cannot take asin of value that is not dimension-less
LINE 1: select 'asin(1 kg)'::unit;
^
select 'tan(1)'::unit;
unit
-----------------
1.5574077246549
(1 row)
select 'tan(1 mol)'::unit;
ERROR: cannot take tan of value that is not dimension-less
LINE 1: select 'tan(1 mol)'::unit;
^
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