ASIN in JS

Description

Function that returns the arcsine of a specified number (JavaScript ASIN function Documentation).

Sample Source Pattern

Syntax

Math.asin( expression )

Arguments

expression: Numeric expression, where expression is in$[-1,1]$.

Return Type

Numeric expression between $-\frac{\pi}{2}$ and $\frac{\pi}{2}$. If the numeric expression sent by parameter is out of the domain of the arccosine $[-1, 1]$, the function returns NaN.

Examples

Query

CREATE OR REPLACE FUNCTION compute_asin(a float)
  RETURNS float
  LANGUAGE JAVASCRIPT
AS
$$
  return Math.asin(A);
$$
;
SELECT COMPUTE_ASIN(0.5);

Result

COMPUTE_ASIN(1)   |
------------------+
      0.5235987756|