7.2 The Transcendentals module
atan
G.f. method
Summary
Returns the arc tangent of its argument.
Signature
atan x => y
Arguments
- x
- An instance of type
<real>. The angle, in radians. If x is not in the range[-1,+1], an error is signalled.
Values
- y
- An instance of type
<float>.
Library
common-extensions
Module
transcendentals
Description
Returns the arc tangent of its argument. The floating point precision of the result is given by the precision of x. The result is a single-float if x is an integer.
See also
See the functions acos, page 168 and asin, page 170.