9.5. Mathematical Functions and Operators
Mathematical Operators
Operator | Description |
---|---|
+ | Addition |
- | Subtraction |
* | Multiplication |
/ | Division (integer division performs truncation) |
% | Modulus (remainder) |
Mathematical Functions
- abs(x) → [same as input]
Returns the absolute value of x.
- cbrt(x) → double
Returns the cube root of x.
- ceil(x) → [same as input]
This is an alias for ceiling().
- ceiling(x) → [same as input]
Returns x rounded up to the nearest integer.
- degrees(x) → double
Converts angle x in radians to degrees.
- e() → double
Returns the constant Euler’s number.
- exp(x) → double
Returns Euler’s number raised to the power of x.
- floor(x) → [same as input]
Returns x rounded down to the nearest integer.
- from_base(string, radix) → bigint
Returns the value of string interpreted as a base-radix number.
- ln(x) → double
Returns the natural logarithm of x.
- log2(x) → double
Returns the base 2 logarithm of x.
- log10(x) → double
Returns the base 10 logarithm of x.
- log(x, b) → double
Returns the base b logarithm of x.
- mod(n, m) → [same as input]
Returns the modulus (remainder) of n divided by m.
- pi() → double
Returns the constant Pi.
- pow(x, p) → double
Returns x raised to the power of p.
- radians(x) → double
Converts angle x in degrees to radians.
- rand() → double
Alias for random().
- random() → double
Returns a pseudo-random value in the range 0.0 <= x < 1.0
- round(x) → [same as input]
Returns x rounded to the nearest integer.
- round(x, d) → [same as input]
Returns x rounded to d decimal places.
- sqrt(x) → double
Returns the square root of x.
- to_base(x, radix) → varchar
Returns the base-radix representation of x.
Trigonometric Functions
All trigonometric function arguments are expressed in radians. See unit conversion functions degrees() and radians().
- acos(x) → double
Returns the arc cosine of x.
- asin(x) → double
Returns the arc sine of x.
- atan(x) → double
Returns the arc tangent of x.
- atan2(y, x) → double
Returns the arc tangent of y / x.
- cos(x) → double
Returns the cosine of x.
- cosh(x) → double
Returns the hyperbolic cosine of x.
- sin(x) → double
Returns the sine of x.
- tan(x) → double
Returns the tangent of x.
- tanh(x) → double
Returns the hyperbolic tangent of x.
Floating Point Functions
- infinity() → double
Returns the constant representing positive infinity.
- is_finite(x) → boolean
Determine if x is finite.
- is_infinite(x) → boolean
Determine if x is infinite.
- is_nan(x) → boolean
Determine if x is not-a-number.
- nan() → double
Returns the constant representing not-a-number.