1046 |
is out of range (outside [-1, 1]), then the result is a NaN. |
is out of range (outside [-1, 1]), then the result is a NaN. |
1047 |
@end defun |
@end defun |
1048 |
|
|
1049 |
@defun atan arg |
@defun atan y &optional x |
1050 |
The value of @code{(atan @var{arg})} is a number between |
The value of @code{(atan @var{y})} is a number between |
1051 |
@ifnottex |
@ifnottex |
1052 |
@minus{}pi/2 |
@minus{}pi/2 |
1053 |
@end ifnottex |
@end ifnottex |
1061 |
@tex |
@tex |
1062 |
@math{\pi/2} |
@math{\pi/2} |
1063 |
@end tex |
@end tex |
1064 |
(exclusive) whose tangent is @var{arg}. |
(exclusive) whose tangent is @var{y}. If the optional second |
1065 |
|
argument @var{x} is given, the value of @code{(atan y x)} is the |
1066 |
|
angle in radians between the vector @code{[@var{x}, @var{y}]} and the |
1067 |
|
@code{X} axis. |
1068 |
@end defun |
@end defun |
1069 |
|
|
1070 |
@defun exp arg |
@defun exp arg |