Manpage of ATAN
ATAN
Section: NEWLIB (3)
Updated: 2005 Feb 23
Index
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NAME
1.6 `atan', `atanf'--arc tangent
SYNOPSIS
#include <math.h>
double atan(double X);
float atanf(float X);
DESCRIPTION
`atan' computes the inverse tangent (arc tangent) of the input value.
`atanf' is identical to `atan', save that it operates on `floats'.
RETURNS
`atan' returns a value in radians, in the range of -pi/2 to pi/2.
PORTABILITY
`atan' is ANSI C. `atanf' is an extension.
SEE ALSO
atan
is part of the
libm
library.
The full documentation for
libm
is maintained as a Texinfo manual. If
info
and
libm
are properly installed at your site, the command
-
info libm
will give you access to the complete manual.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURNS
-
- PORTABILITY
-
- SEE ALSO
-
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