ATAN
Section: C Library Functions (3)
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BSD mandoc
NAME
atan
- arc tangent function of one variable
SYNOPSIS
Fd #include <math.h>
Ft double
Fn atan double x
DESCRIPTION
The
Fn atan
function computes the principal value of the arc tangent of
Fa x .
For a discussion of error due to roundoff, see
math(3).
RETURN VALUES
The
Fn atan
function returns the arc tangent in the range
-words
Bq -/2 , +/2
radians.
SEE ALSO
acos(3),
asin(3),
atan2(3),
cos(3),
cosh(3),
sin(3),
sinh(3),
tan(3),
tanh(3),
math(3),
STANDARDS
The
Fn atan
function conforms to
St -ansiC .
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUES
-
- SEE ALSO
-
- STANDARDS
-
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Time: 16:10:48 GMT, January 15, 2023