atan

Computes the inverse tangent of numeric types.

Prototype

	function atan (
		value  : numeric   
	)

	return_val [dimsizes(value)] :  float or double

Arguments

One or more values of any dimension.

Return value

Returns an array dimensioned the same as value, in radians. The return type is double if the input is double, and float otherwise.

Description

This function returns the inverse tangent of each element of value, in radians, in the range -&pi/2 &le return_val &le &pi/2. The return array is dimensioned the same as value. Missing values are ignored.

See Also

acos, asin, atan2

Examples

Example 1

  f = 2.7
  atan_f = atan(f)
  print(atan_f)        ; Should be 1.216091