Function

# vvatan2

Calculates the arctangent of each pair of elements in two arrays of double-precision values.

## Parameters

`parameter 1`

The output array, z.

`parameter 2`

The input array, y.

`parameter 3`

The input array, x.

`parameter 4`

The number of elements in the arrays.

## Discussion

The signs of both arguments are used to determine the quadrant of the calculated value.

The following special values of `x` and `y` produce the given value of `z`:

### Array-Oriented Trigonometric Functions

`vvsin`

Calculates the sine of each element in an array of double-precision values.

`vvsinf`

Calculates the sine of each element in an array of single-precision values.

`vvsinpi`

Calculates the sine of pi multiplied by each element in an array of double-precision values.

`vvsinpif`

Calculates the sine of pi multiplied by each element in an array of single-precision values.

`vvcos`

Calculates the cosine of each element in an array of double-precision values.

`vvcosf`

Calculates the cosine of each element in an array of single-precision values.

`vvcospi`

Calculates the cosine of pi multiplied by each element in an array of double-precision values.

`vvcospif`

Calculates the cosine of pi multiplied by each element in an array of single-precision values.

`vvcosisin`

Calculates the cosine and sine of each element in an array of double-precision values.

`vvcosisinf`

Calculates the cosine and sine of each element in an array of single-precision values.

`vvsincos`

Calculates the cosine and sine of each element in an array of double-precision values.

`vvsincosf`

Calculates the cosine and sine of each element in an array of single-precision values.

`vvtan`

Calculates the tangent of each element in an array of double-precision values.

`vvtanf`

Calculates the tangent of each element in an array of single-precision values.

`vvtanpi`

Calculates the tangent of pi multiplied by each element in an array of double-precision values.

`vvtanpif`

Calculates the tangent of pi multiplied by each element in an array of single-precision values.

`vvasin`

Calculates the arcsine of each element in an array of double-precision values.

`vvasinf`

Calculates the arcsine of each element in an array of single-precision values.

`vvacos`

Calculates the arccosine of each element in an array of double-precision values.

`vvacosf`

Calculates the arccosine of each element in an array of single-precision values.

`vvatan`

Calculates the arctangent of each element in an array of double-precision values.

`vvatanf`

Calculates the arctangent of each element in an array of single-precision values.

`vvatan2f`

Calculates the arctangent of each pair of elements in two arrays of single-precision values.

Beta Software

This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.